1
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Su X, Li G, He L, Chen S, Yang X, Wang G, Li S. Nickel-catalyzed, silyl-directed, ortho-borylation of arenes via an unusual Ni(II)/Ni(IV) catalytic cycle. Nat Commun 2024; 15:7549. [PMID: 39214987 PMCID: PMC11364840 DOI: 10.1038/s41467-024-51997-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 08/21/2024] [Indexed: 09/04/2024] Open
Abstract
Nickel-catalyzed C-H bond functionalization reactions provide an impressive alternative to those with noble metal catalysts due to their unique reactivity and low cost. However, the regioselective C(sp2)-H borylation reaction of arenes accomplished by nickel catalyst remains limited. We herein disclose a silyl-directed ortho C(sp2)-H borylation of substituted arenes with a Ni(cod)2/PMe3/KHMDS catalyst system. Using readily available starting materials, this protocol provides easy access to ortho-borylated benzylic hydrosilanes bearing flexible substitution patterns. These products can serve as versatile building blocks for the synthesis of sila or sila/borine heterocycles under mild conditions. Control experiments and DFT calculations suggest that a catalytic amount of base prompts the formation of Ni(II)-Bpin-ate complex, likely related to the C(sp2)-H bond activation. This borylation reaction might follow an unusual Ni(II)/Ni(IV) catalytic cycle.
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Affiliation(s)
- Xiaoshi Su
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Guoao Li
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Linke He
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Shengda Chen
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Xiaoliang Yang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Guoqiang Wang
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China.
| | - Shuhua Li
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China.
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2
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Cao ZW, Zhang JX, Wang JT, Li L, Chen XY, Jin S, Cao ZY, Wang P. Palladium-Catalyzed Hiyama-Type Coupling of Thianthrenium and Phenoxathiinium Salts. Org Lett 2024; 26:6681-6686. [PMID: 39058573 DOI: 10.1021/acs.orglett.4c02348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2024]
Abstract
Here, we demonstrate palladium-catalyzed Hiyama-type cross-coupling reactions of aryl thianthrenium or phenoxathiinium salts. By employing stable and inexpensive organosilanes, the arylation, alkenylation, and alkynylation were realized in high efficiency using commercially available Pd(tBu3P)2 as the catalyst, thus providing a reliable method for preparation of biaryls, styrenes, and aryl acetylenes with a broad functional group tolerance under mild conditions. Given the accessibility of aryl thianthrenium or phenoxathiinium salts from simple arenes in a remarkable regioselective fashion, this protocol also provides an attractive approach for the late-stage modification of complex bioactive scaffolds.
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Affiliation(s)
- Zhi-Wei Cao
- College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, P. R. China
| | - Ji-Xuan Zhang
- College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, P. R. China
| | - Jin-Tao Wang
- College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, P. R. China
| | - Lang Li
- College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, P. R. China
| | - Xiao-Yue Chen
- State Key Laboratory of Organometallic Chemistry and Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, CAS 345 Lingling Road, Shanghai 200032, P. R. China
| | - Shengnan Jin
- College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, P. R. China
| | - Zhong-Yan Cao
- College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, P. R. China
| | - Peng Wang
- State Key Laboratory of Organometallic Chemistry and Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, CAS 345 Lingling Road, Shanghai 200032, P. R. China
- School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, P. R. China
- College of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry, and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China
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3
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Chandrasekaran R, Selvam K, Rajeshkumar T, Chinnusamy T, Maron L, Rasappan R. Anti-Selective Carbosilylation: Nickel-Catalyzed Multicomponent Reaction of Solid Me 3SiZnI. Angew Chem Int Ed Engl 2024; 63:e202318689. [PMID: 38547324 DOI: 10.1002/anie.202318689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Indexed: 04/25/2024]
Abstract
The stereodefined and highly substituted vinylsilanes are essential building blocks for constructing complex organic molecules. Transition metal-mediated silylmetalation of alkynes was developed to overcome the limitations of conventional hydrosilylations; however, a very limited study was carried out to utilize transient vinylmetal species in cross-coupling reactions. Moreover, they produce syn-adduct, and the anti-selective cross-coupling is still unknown and highly desired. Silylzinc reagents are highly functional group tolerant, however, their synthesis from pyrophoric silyllithium and dissolved lithium salts hampers cross-coupling reactions. Our novel solid silylzinc reagents circumvent these constraints are employed in the anti-selective synthesis of vinylsilanes via a multi-component reaction involving Me3SiZnI, terminal alkynes, and activated alkyl halides. An intensive computational and experimental investigation of the mechanism reveals an equilibrium between the intermediate syn- and anti-adducts; the greater barrier at the single electron reduction of alkyl halides and the thermodynamic stability of the Ni(III) adduct determine the anti-selectivity.
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Affiliation(s)
- Revathi Chandrasekaran
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Kerala, India
| | - Keerthika Selvam
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Kerala, India
| | - Thayalan Rajeshkumar
- Laboratoire de Physique et Chimie des Nano-objets, Institut National des Sciences Appliquées, 31077, Toulouse, Cedex 4, France
| | - Tamilselvi Chinnusamy
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Kerala, India
| | - Laurent Maron
- Laboratoire de Physique et Chimie des Nano-objets, Institut National des Sciences Appliquées, 31077, Toulouse, Cedex 4, France
| | - Ramesh Rasappan
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Kerala, India
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4
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Chowdhury R, Dubey AK, Ghosh R. Synthesis of Functionalized Organosilicon Compounds/Distal Ketones via Ring-Opening Giese Addition of Cycloalkanols under Organophotocatalytic Conditions. J Org Chem 2024; 89:7187-7200. [PMID: 38669476 DOI: 10.1021/acs.joc.4c00600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2024]
Abstract
Visible-light-induced organophotocatalyzed ring-opening followed by remote Giese addition of tertiary cycloalkanols with β-silylmethylene malonates has been developed under mild reaction conditions for the synthesis of organosilicon compounds, bearing a ketone group distally substituted with a silyl group with an additional dialkyl malonate functional handle in moderate to good yields (34-72%). The protocol also worked well with diverse Michael acceptors, such as alkylidene/benzylidene malonates, trifluoro methylidene malonate, benzylidene malononitrile, α-cyano-enone, and α-cyano vinyl sulfone, and delivered desired valuable distally functionalized ketones. To showcase the potential of the method, various synthetic transformations of the obtained product were also demonstrated.
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Affiliation(s)
- Raghunath Chowdhury
- Bio-Organic Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
| | - Akhil K Dubey
- Bio-Organic Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Rajib Ghosh
- Radiation and Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
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5
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Kraft F, Koszinowski K. Intramolecular Phenyl Transfer from a Boronate to Lithium in the Gas Phase Reveals Crucial Role of Solvation in Transmetalations. Chemistry 2024; 30:e202303653. [PMID: 38427965 DOI: 10.1002/chem.202303653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 03/01/2024] [Accepted: 03/01/2024] [Indexed: 03/03/2024]
Abstract
In contrast to its behavior in solution, the adduct [(LiBr)(tBu)(Ph)Bpin]- (pin=pinacol) transfers its phenyl anion from boron to lithium upon fragmentation in the gas phase. Quantum chemical calculations predict this exceptional transmetalation to be exothermic relative to the separated reactants, [(tBu)(Ph)Bpin]- and LiBr, which we attribute to the high phenyl-anion affinity of the coordinatively unsaturated LiBr unit. The addition of a single molecule of tetrahydrofuran drastically reduces the phenyl-anion affinity of LiBr and thereby renders the transmetalation from boron to lithium endothermic. Thus, the probed system highlights the importance of solvation and ligation effects in transmetalations. For correctly predicting the direction, in which these reactions proceed, it is not sufficient to consider the electronegativities or partial charges of the involved metals or metalloids. Instead, the individual coordination states and their changes over the course of the reaction must be taken into account.
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Affiliation(s)
- Finn Kraft
- Institute of Organic and Biomolecular Chemistry, Georg-August Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Konrad Koszinowski
- Institute of Organic and Biomolecular Chemistry, Georg-August Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
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6
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Zhao JH, Zheng L, Zou JY, Zhang SY, Shen HC, Wu Y, Wang P. Construction of Si-Stereogenic Silanols by Palladium-Catalyzed Enantioselective C-H Alkenylation. Angew Chem Int Ed Engl 2024; 63:e202402612. [PMID: 38410071 DOI: 10.1002/anie.202402612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 02/26/2024] [Accepted: 02/26/2024] [Indexed: 02/28/2024]
Abstract
The construction of silicon-stereogenic silanols via Pd-catalyzed intermolecular C-H alkenylation with the assistance of a commercially available L-pyroglutamic acid has been realized for the first time. Employing oxime ether as the directing group, silicon-stereogenic silanol derivatives could be readily prepared with excellent enantioselectivities, featuring a broad substrate scope and good functional group tolerance. Moreover, parallel kinetic resolution with unsymmetric substrates further highlighted the generality of this protocol. Mechanistic studies indicate that L-pyroglutamic acid could stabilize the Pd catalyst and provide excellent chiral induction. Preliminary computational studies unveil the origin of the enantioselectivity in the C-H bond activation step.
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Affiliation(s)
- Jia-Hui Zhao
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, China
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Long Zheng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, China
| | - Jian-Ye Zou
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, China
| | - Sheng-Ye Zhang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, China
| | - Hua-Chen Shen
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, China
| | - Yichen Wu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, China
| | - Peng Wang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, China
- School of Chemistry and Material Sciences, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China
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7
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Zhang Z, Lu L, Li G, Sheng X, Zhang Y, Yang L, Zhao J, Xie L, Li J, Sun K. Radical cascade silylation/cyclization of 1,7-dienes to access silyl-substituted benzo[ b]azepin-2-ones. Chem Commun (Camb) 2024; 60:4206-4209. [PMID: 38523529 DOI: 10.1039/d4cc00499j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
A novel silyl radical-induced cascade silylation/cyclization of 1,7-dienes has been realized employing readily available hydrosilanes as a silicon source and Cu(I) salt as a catalyst. This protocol introduces diverse silicon fragments into a challenging 7-membered ring structure and provides an efficient approach to a wide array of biologically important silyl-substituted benzo[b]azepin-2-ones. Several control experiments suggest that the reaction undergoes a free radical process. The gram-scale synthesis and late-stage transformations further demonstrate the scalability and applicability of the reaction in organic synthesis.
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Affiliation(s)
- Zhen Zhang
- School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China.
| | - Lichao Lu
- School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China.
| | - Guiling Li
- School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China.
| | - Xiaoyu Sheng
- School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China.
| | - Yijia Zhang
- School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China.
| | - Lin Yang
- School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China.
| | - Jiaqi Zhao
- School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China.
| | - Lei Xie
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, 252000, P. R. China
| | - Jiazhu Li
- School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China.
| | - Kai Sun
- School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China.
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8
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Geng S, Pu Y, Wang S, Ji Y, Feng Z. Advances in disilylation reactions to access cis/ trans-1,2-disilylated and gem-disilylated alkenes. Chem Commun (Camb) 2024; 60:3484-3506. [PMID: 38469709 DOI: 10.1039/d4cc00288a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
Organosilane compounds are widely used in both organic synthesis and materials science. Particularly, 1,2-disilylated and gem-disilylated alkenes, characterized by a carbon-carbon double bond and multiple silyl groups, exhibit significant potential for subsequently diverse transformations. The versatility of these compounds renders them highly promising for applications in materials, enabling them to be valuable and versatile building blocks in organic synthesis. This review provides a comprehensive summary of methods for the preparation of cis/trans-1,2-disilylated and gem-disilylated alkenes. Despite notable advancements in this field, certain limitations persist, including challenges related to regioselectivity in the incorporation and chemoselectivity in the transformation of two nearly identical silyl groups. The primary objective of this review is to outline synthetic methodologies for the generation of these alkenes through disilylation reactions, employing silicon reagents, specifically disilanes, hydrosilanes, and silylborane reagents. The review places particular emphasis on investigating the practical applications of the C-Si bond of disilylalkenes and delves into an in-depth discussion of reaction mechanisms, particularly those reactions involving the activation of Si-Si, Si-H, and Si-B bonds, as well as the C-Si bond formation.
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Affiliation(s)
- Shasha Geng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China.
| | - Yu Pu
- Sichuan Key Laboratory of Medical Imaging, North Sichuan Medical College, Nanchong, Sichuan 637000, P. R. China
| | - Siyu Wang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China.
| | - Yanru Ji
- Sichuan Key Laboratory of Medical Imaging, North Sichuan Medical College, Nanchong, Sichuan 637000, P. R. China
| | - Zhang Feng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China.
- Sichuan Key Laboratory of Medical Imaging, North Sichuan Medical College, Nanchong, Sichuan 637000, P. R. China
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9
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Das KK, Hajra A. Silylation of 2 H-indazoles by photoinduced hydrogen atom transfer catalysis. Org Biomol Chem 2024; 22:1034-1037. [PMID: 38197231 DOI: 10.1039/d3ob01925j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
A metal-free, visible-light-mediated C-H silylation of 2H-indazoles with triphenylsilane has been developed employing 4CzIPN as a photocatalyst and triisopropylsilanethiol as a hydrogen atom transfer (HAT) reagent under aerobic reaction conditions. This method shows tolerance toward many functional groups and affords a variety of silylated indazoles at up to 89% yield. The experimental results suggest that the reaction progresses through a radical pathway.
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Affiliation(s)
- Krishna Kanta Das
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India.
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India.
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10
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Tang HT, Zhou HY, Pan YM, Zhang JL, Cui FH, Li WH, Wang D. Single-Atom Manganese-Catalyzed Oxygen Evolution Drives the Electrochemical Oxidation of Silane to Silanol. Angew Chem Int Ed Engl 2024; 63:e202315032. [PMID: 38057563 DOI: 10.1002/anie.202315032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 11/23/2023] [Accepted: 12/06/2023] [Indexed: 12/08/2023]
Abstract
The oxygen evolution reaction (OER), characterized by a four-electron transfer kinetic process, represents a significant bottleneck in improving the efficiency of hydrogen production from water electrolysis. Consequently, extensive research efforts have been directed towards identifying single-atom electrocatalysts with exceptional OER performance. Despite the comprehensive understanding of the OER mechanism, its application to other valuable synthetic reactions has been limited. Herein, we leverage the MOOH intermediate, a key species in the Mn-N-C single-atom catalyst (Mn-SA@NC), which can be cyclically delivered in the OER. We exploit this intermediate' s capability to facilitate electrophilic transfer with silane, enabling efficient silane oxidation under electrochemical conditions. The SAC electrocatalytic system exhibits remarkable performance with catalyst loadings as low as 600 ppm and an exceptional turnover number of 9132. Furthermore, the catalytic method demonstrates stability under a 10 mmol flow chemistry setup. By serving as an OER electrocatalyst, the Mn-SA@NC drives the entire reaction, establishing a practical Mn SAC-catalyzed organic electrosynthesis system. This synthesis approach not only presents a promising avenue for the utilization of electrocatalytic OER but also highlights the potential of SACs as an attractive platform for organic electrosynthesis investigations.
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Affiliation(s)
- Hai-Tao Tang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - He-Yang Zhou
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Ying-Ming Pan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Jia-Lan Zhang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Fei-Hu Cui
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Wen-Hao Li
- Department of Chemistry, Northeastern University, Shenyang, 110004, China
| | - Dingsheng Wang
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
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11
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Huang WS, Xu H, Yang H, Xu LW. Catalytic Synthesis of Silanols by Hydroxylation of Hydrosilanes: From Chemoselectivity to Enantioselectivity. Chemistry 2024; 30:e202302458. [PMID: 37861104 DOI: 10.1002/chem.202302458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 10/19/2023] [Accepted: 10/20/2023] [Indexed: 10/21/2023]
Abstract
As a crucial class of functional molecules in organosilicon chemistry, silanols are found valuable applications in the fields of modern science and will be a potentially powerful framework for biologically active compounds or functional materials. It has witnessed an increasing demand for non-natural organosilanols, as well as the progress in the synthesis of these structural features. From the classic preparative methods to the catalytic selective oxidation of hydrosilanes, electrochemical hydrolysis of hydrosilanes, and then the construction of the most challenging silicon-stereogenic silanols. This review summarized the progress in the catalyzed synthesis of silanols via hydroxylation of hydrosilanes in the last decade, with a particular emphasis on the latest elegant developments in the desymmetrization strategy for the enantioselective synthesis of silicon-stereogenic silanols from dihydrosilanes.
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Affiliation(s)
- Wei-Sheng Huang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, and Key Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Hao Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, and Key Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China
| | - Li-Wen Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, and Key Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P. R. China
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12
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Kadam R, Medved’ M, Kumar S, Zaoralová D, Zoppellaro G, Bad’ura Z, Montini T, Bakandritsos A, Fonda E, Tomanec O, Otyepka M, Varma RS, Gawande MB, Fornasiero P, Zbořil R. Linear-Structure Single-Atom Gold(I) Catalyst for Dehydrogenative Coupling of Organosilanes with Alcohols. ACS Catal 2023; 13:16067-16077. [PMID: 38125981 PMCID: PMC10729017 DOI: 10.1021/acscatal.3c03937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 12/23/2023]
Abstract
A strategy for the synthesis of a gold-based single-atom catalyst (SAC) via a one-step room temperature reduction of Au(III) salt and stabilization of Au(I) ions on nitrile-functionalized graphene (cyanographene; G-CN) is described. The graphene-supported G(CN)-Au catalyst exhibits a unique linear structure of the Au(I) active sites promoting a multistep mode of action in dehydrogenative coupling of organosilanes with alcohols under mild reaction conditions as proven by advanced XPS, XAFS, XANES, and EPR techniques along with DFT calculations. The linear structure being perfectly accessible toward the reactant molecules and the cyanographene-induced charge transfer resulting in the exclusive Au(I) valence state contribute to the superior efficiency of the emerging two-dimensional SAC. The developed G(CN)-Au SAC, despite its low metal loading (ca. 0.6 wt %), appear to be the most efficient catalyst for Si-H bond activation with a turnover frequency of up to 139,494 h-1 and high selectivities, significantly overcoming all reported homogeneous gold catalysts. Moreover, it can be easily prepared in a multigram batch scale, is recyclable, and works well toward more than 40 organosilanes. This work opens the door for applications of SACs with a linear structure of the active site for advanced catalytic applications.
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Affiliation(s)
- Ravishankar
G. Kadam
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
| | - Miroslav Medved’
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
- Department
of Chemistry, Faculty of Natural Sciences, Matej Bel University, Tajovského 40, Banská Bystrica 974 01, Slovak
Republic
| | - Subodh Kumar
- Department
of Inorganic Chemistry, Faculty of Science, Palacký University Olomouc, 17. listopadu 12, Olomouc 779 00, Czech Republic
| | - Dagmar Zaoralová
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
- IT4Innovations, VŠB−Technical
University of Ostrava, 17. listopadu 2172/15, Ostrava, Poruba 708 00, Czech Republic
| | - Giorgio Zoppellaro
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
- CEET,
Nanotechnology Centre, VŠB−Technical
University of Ostrava, 17. listopadu 2172/15, Ostrava, Poruba 708 00, Czech Republic
| | - Zdeněk Bad’ura
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
- CEET,
Nanotechnology Centre, VŠB−Technical
University of Ostrava, 17. listopadu 2172/15, Ostrava, Poruba 708 00, Czech Republic
| | - Tiziano Montini
- Department
of Chemical and Pharmaceutical Sciences, Center for Energy, Environment
and Transport Giacomo Ciamiciam, INSTM Trieste Research Unit and ICCOM-CNR
Trieste Research Unit, University of Trieste
via L. Giorgieri 1, Trieste I-34127, Italy
| | - Aristides Bakandritsos
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
- CEET,
Nanotechnology Centre, VŠB−Technical
University of Ostrava, 17. listopadu 2172/15, Ostrava, Poruba 708 00, Czech Republic
| | - Emiliano Fonda
- Synchrotron
SOLEIL, L’Orme des Merisiers, Saint Aubin 91190, France
| | - Ondřej Tomanec
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
| | - Michal Otyepka
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
- IT4Innovations, VŠB−Technical
University of Ostrava, 17. listopadu 2172/15, Ostrava, Poruba 708 00, Czech Republic
| | - Rajender S. Varma
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
| | - Manoj B. Gawande
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
- Department
of Industrial and Engineering, Chemistry
Institute of Chemical Technology, Mumbai-Marathwada Campus, Jalna, Maharashtra 431213, India
| | - Paolo Fornasiero
- Department
of Chemical and Pharmaceutical Sciences, Center for Energy, Environment
and Transport Giacomo Ciamiciam, INSTM Trieste Research Unit and ICCOM-CNR
Trieste Research Unit, University of Trieste
via L. Giorgieri 1, Trieste I-34127, Italy
| | - Radek Zbořil
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
- CEET,
Nanotechnology Centre, VŠB−Technical
University of Ostrava, 17. listopadu 2172/15, Ostrava, Poruba 708 00, Czech Republic
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13
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Saha A, Ali W, Werz DB, Maiti D. Highly scalable photoinduced synthesis of silanols via untraversed pathway for chlorine radical (Cl •) generation. Nat Commun 2023; 14:8173. [PMID: 38071374 PMCID: PMC10710510 DOI: 10.1038/s41467-023-43286-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 11/06/2023] [Indexed: 02/26/2024] Open
Abstract
The emergence of visible light-mediated synthetic transformations has transpired as a promising approach to redefine traditional organic synthesis in a sustainable way. In this genre, transition metal-mediated photoredox catalysis has led the way and recreated a plethora of organic transformations. However, the use of photochemical energy solely to initiate the reaction is underexplored. With the direct utilization of photochemical energy herein, we have established a general and practical protocol for the synthesis of diversely functionalized organosilanols, silanediols, and polymeric siloxanol engaging a wide spectrum of hydrosilanes under ambient reaction conditions. Streamlined synthesis of bio-active silanols via late-stage functionalization underscores the importance of this sustainable protocol. Interestingly, this work also reveals photoinduced non-classical chlorine radical (Cl•) generation from a readily available chlorinated solvent under aerobic conditions. The intriguing factors of the proposed mechanism involving chlorine and silyl radicals as intermediates were supported by a series of mechanistic investigations.
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Affiliation(s)
- Argha Saha
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India
| | - Wajid Ali
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India
| | - Daniel B Werz
- Albert-Ludwigs-Universität Freiburg, Institute of Organic Chemistry, Albertstr. 21, 79104, Freiburg, Germany.
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India.
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14
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Peng F, Liu K, Zhang H, Xu F, Liu Y, Shang G. Direct Enol Ether Metalation-Negishi Coupling Strategy To Prepare α-Heteroaryl Enol Ethers. Org Lett 2023; 25:8516-8519. [PMID: 38037392 DOI: 10.1021/acs.orglett.3c03517] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
A robust direct enol ether metalation-Negishi coupling using heteroaryl halides catalyzed by the palladium-Cy-DPEPhos system is reported. This method, which was demonstrated with a broad substrate scope, is a highly complementary method to the existing Heck coupling of synthesizing challenging α-heteroaryl-α-alkoxy alkenes.
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Affiliation(s)
- Feng Peng
- Department of Process Research and Development, MRL, Merck & Co., Inc, Rahway, New Jersey 07065, United States
| | - Kailin Liu
- Department of Synthetic Chemistry, Pharmaron Beijing Co., Ltd, 6 Taihe Road BDA, Beijing 100176, China
| | - Huangguang Zhang
- Department of Synthetic Chemistry, Pharmaron Beijing Co., Ltd, 6 Taihe Road BDA, Beijing 100176, China
| | - Fuchun Xu
- Department of Synthetic Chemistry, Pharmaron Beijing Co., Ltd, 6 Taihe Road BDA, Beijing 100176, China
| | - Yanan Liu
- Department of Synthetic Chemistry, Pharmaron Beijing Co., Ltd, 6 Taihe Road BDA, Beijing 100176, China
| | - Gao Shang
- Department of Process Research and Development, MRL, Merck & Co., Inc, Rahway, New Jersey 07065, United States
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15
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Liu S, Robert F, Landais Y. Dual photoredox nickel-catalyzed silylation of aryl/heteroaryl bromides using hydrosilanes. Chem Commun (Camb) 2023; 59:11369-11372. [PMID: 37665260 DOI: 10.1039/d3cc03246a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
Dual Ni and Ir catalysis enables the preparation of arylsilanes having a (TMS)3Si substituent from the corresponding aryl bromides and (TMS)3SiH at 30 °C using visible-light irradiation. This protocol avoids strong bases, high temperature and air and moisture sensitive silyl reagents, providing the expected arylsilanes in moderate to good yields. The reaction was shown to proceed through a silyl radical, likely generated by hydrogen atom abstraction from (TMS)3SiH by a bromide radical.
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Affiliation(s)
- Shuai Liu
- University Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33400 Talence, France.
| | - Frédéric Robert
- University Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33400 Talence, France.
| | - Yannick Landais
- University Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33400 Talence, France.
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16
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Kong Z, Hu W, Morken JP. 1,2-Diborylsilanes: Catalytic Enantioselective Synthesis and Site-Selective Cross-Coupling. ACS Catal 2023; 13:11522-11527. [PMID: 38469392 PMCID: PMC10927258 DOI: 10.1021/acscatal.3c01789] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
A Pt-catalyzed enantioselective hydrosilylation of (Z)-1,2-diborylethylene provides a 1,2-diboryl-1-silylalkane that can be used in catalytic cross-coupling reactions. Depending on the catalyst employed and the cross-coupling reaction conditions, the coupling can occur at either α or β relative to the silane center.
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Affiliation(s)
- Ziyin Kong
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Weipeng Hu
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - James P Morken
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
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17
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Do M, Anosike SI, Beng TK. Diastereospecific arylation and cascade deconstructive amidation/thioesterification of readily available lactam-fused bromolactones. RSC Adv 2023; 13:25691-25698. [PMID: 37649665 PMCID: PMC10463012 DOI: 10.1039/d3ra04690g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 08/18/2023] [Indexed: 09/01/2023] Open
Abstract
An intrinsic goal when designing synthetic methodology is to identify approaches whereby readily accessible precursors are converted into an array of products, which efficiently tap into new 3D-chemical space. In these studies, readily available bicyclic lactam-bromolactones have been interrogated in several fragment growth protocols by utilizing the halogen and lactone motifs as versatile linchpins for strategic construction of C-C, C-N, C-O, and C-S bonds. Diastereospecific C(sp3)-C(sp2) Kumada coupling of sterically imposing [5,5]-bicyclic lactam-bromolactones with several aryl Grignard reagents, under palladium catalysis, furnishes diarylmethane-tethered lactam-lactones in synthetically attractive yields, stereoinvertive fashion, and with a tolerance for many functional groups. When [5,6]-bicyclic lactam-bromolactones, which are prone to β-hydride elimination are employed, efficient arylation is observed only under Co(acac)3-catalyzed conditions. Importantly, these [5,6]-bicyclic lactam-bromolactones undergo retentive arylation, independent of the transition metal catalyst. A base-mediated cascade deconstructive amidation of the [5,6]-bicyclic lactam-bromolactones with primary aliphatic amines proceeds efficiently to afford epoxide-tethered lactam carboxamides, which bear four contiguous stereocenters. Furthermore, an unusual route to homoallylic thioesters has been uncovered through deconstructive contra-thermodynamic thioesterification of the lactam-fused bromolactone precursors.
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Affiliation(s)
- Minh Do
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Stella I Anosike
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Timothy K Beng
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
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18
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Behera RR, Saha R, Kumar AA, Sethi S, Jana NC, Bagh B. Hydrosilylation of Terminal Alkynes Catalyzed by an Air-Stable Manganese-NHC Complex. J Org Chem 2023. [PMID: 37317486 DOI: 10.1021/acs.joc.3c00127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
In recent years, catalysis with base metal manganese has received a significant amount of interest. Catalysis with manganese complexes having N-heterocyclic carbenes (NHCs) is relatively underdeveloped in comparison to the extensively investigated manganese catalysts possessing pincer ligands (particularly phosphine-based ligands). Herein, we describe the synthesis of two imidazolium salts decorated with picolyl arms (L1 and L2) as NHC precursors. Facile coordination of L1 and L2 with MnBr(CO)5 in the presence of a base resulted in the formation manganese(I)-NHC complexes (1 and 2) as an air-stable solid in good isolated yield. Single-crystal X-ray analysis revealed the structure of the cationic complexes [Mn(CO)3(NHC)][PF6] with tridentate N,C,N binding of the NHC ligand in a facile fashion. Along with a few known manganese(I) complexes, these Mn(I)-NHC complexes 1 and 2 were tested for the hydrosilylation of terminal alkynes. Complex 1 was proved to be an effective catalyst for the hydrosilylation of terminal alkynes with good selectivity toward the less thermodynamically stable β-(Z)-vinylsilanes. This method provided good regioselectivity (anti-Markovnikov addition) and stereoselectivity (β-(Z)-product). Experimental evidence suggested that the present hydrosilylation pathway involved an organometallic mechanism with manganese(I)-silyl species as a possible reactive intermediate.
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Affiliation(s)
- Rakesh R Behera
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Bhubaneswar, Odisha 752050, India
| | - Ratnakar Saha
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Bhubaneswar, Odisha 752050, India
| | - Alamsaty Ashis Kumar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Bhubaneswar, Odisha 752050, India
| | - Subrat Sethi
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Bhubaneswar, Odisha 752050, India
| | - Narayan Ch Jana
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Bhubaneswar, Odisha 752050, India
| | - Bidraha Bagh
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Bhubaneswar, Odisha 752050, India
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19
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Chen YX, He JT, Wu MC, Liu ZL, Xia PJ, Chen K, Xiang HY, Yang H. Visible-light-driven oxidation of organosilanes by a charge-transfer complex. Chem Commun (Camb) 2023; 59:6588-6591. [PMID: 37190787 DOI: 10.1039/d3cc01972a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Direct oxidation of organosilanes is one of the most straightforward ways to access silanols. Herein, we describe a novel photo-induced strategy for oxidation of organosilanes to access silanols, promoted by a photoactive charge-transfer complex (CTC) between sodium benzenesulfinate and molecular O2. A streamlined sequence transformation of organosilanes to silyl ethers was also readily achieved. This developed protocol represents the first example of CTC-based oxidation of organosilanes, offering a facile approach to access a series of silanol and silyl ether products.
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Affiliation(s)
- Yi-Xuan Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
| | - Jun-Tao He
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
| | - Mei-Chun Wu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
- College of Chemistry and Chemical Engineering, Huaihua University, Huaihua 418008, P. R. China
| | - Zhi-Lin Liu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
| | - Peng-Ju Xia
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China
| | - Kai Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
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20
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Yang J, Cao X, Wei L, Zhang J, Zhang J, Liu P, Xu L, Li P. Visible Light-Mediated Organoboron-Catalyzed Metal-Free Synthesis of Silanols from Silanes. Molecules 2023; 28:molecules28104082. [PMID: 37241823 DOI: 10.3390/molecules28104082] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/09/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Herein, a four-coordinated organoboron compound, aminoquinoline diarylboron (AQDAB), is utilized as the photocatalyst in the oxidation of silane to silanol. This strategy effectively oxidizes Si-H bonds, affording Si-O bonds. Generally, the corresponding silanols can be obtained in moderate to good yields at room temperature under oxygen atmospheres, representing a green protocol to complement the existing preparation methods for silanols.
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Affiliation(s)
- Jinbo Yang
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Beisi Road, Xinjiang Uygur Autonomous Region, Shihezi 832003, China
| | - Xiangxue Cao
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Beisi Road, Xinjiang Uygur Autonomous Region, Shihezi 832003, China
| | - Lanfeng Wei
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Beisi Road, Xinjiang Uygur Autonomous Region, Shihezi 832003, China
| | - Jianshu Zhang
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Beisi Road, Xinjiang Uygur Autonomous Region, Shihezi 832003, China
| | - Jinli Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Ping Liu
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Beisi Road, Xinjiang Uygur Autonomous Region, Shihezi 832003, China
| | - Liang Xu
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Beisi Road, Xinjiang Uygur Autonomous Region, Shihezi 832003, China
| | - Pengfei Li
- State Key Laboratory for Mechanical Behavior of Materials, Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710054, China
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21
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Cai J, Zhang J, Zhou X. Selective Si-C(sp 3) bond cleavage of a silyl-bridged amido alkyl ligand in an yttrium complex. Dalton Trans 2023; 52:3807-3814. [PMID: 36866686 DOI: 10.1039/d3dt00149k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Compared with Si-C(sp2 and sp) bonds bearing neighboring π-bond hyperconjugative interactions, the activation of robust Si-C(sp3) bonds has proved to be a challenge. Herein, two distinct Si-C(sp3) bond cleavages have been realized by rare-earth-mediated and nucleophilic addition of unsaturated substrates. The reactions of TpMe2Y[κ2-(C,N)-CH(SiH2Ph)SiMe2NSiMe3](THF) (1) with CO or CS2 gave two endocyclic Si-C bond cleavage products, TpMe2Y[κ2-(O,N)-OCCH(SiH2Ph)SiMe2NSiMe3](THF) (2) and TpMe2Y[κ2-(S,N)-SSiMe2NSiMe3](THF) (3), respectively. However, 1 reacted with nitriles such as PhCN and p-R'C6H4CH2CN in a 1 : 1 molar ratio to yield the exocyclic Si-C bond products TpMe2Y[κ2-(N,N)-N(SiH2Ph)C(R)CHSiMe2NSiMe3](THF) (R = Ph (4); R = C6H5CH2 (6H); R = p-F-C6H4CH2 (6F); and R = p-MeO-C6H4CH2 (6MeO)), respectively. Moreover, complex 4 can continuously react with an excess of PhCN to form a TpMe2-supported yttrium complex with a novel pendant silylamido-substituted β-diketiminato ligand, TpMe2Y[κ3-(N,N,N)-N(SiH2Ph)C(Ph)CHC(Ph)N-SiMe2NSiMe3](PhCN) (5).
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Affiliation(s)
- Jiamin Cai
- Department of Chemistry, Fudan University, No. 2005, Songhu Road, Shanghai 200438, China.
| | - Jie Zhang
- Department of Chemistry, Fudan University, No. 2005, Songhu Road, Shanghai 200438, China.
| | - Xigeng Zhou
- Department of Chemistry, Fudan University, No. 2005, Songhu Road, Shanghai 200438, China.
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22
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Ye ZH, Gou FH, Wu Y, Li CY, Wang P. Diverse Synthesis of Alkenylsilanes via Pd-Catalyzed Alkenyl C-H Silylation. Org Lett 2023; 25:2145-2150. [PMID: 36921249 DOI: 10.1021/acs.orglett.3c00633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Abstract
Here, we disclose a general approach for the diverse synthesis of alkenylsilanes in a highly efficient, stereoselective, and atom-economic manner by leveraging the palladium-catalyzed disilylation reaction of 2-bromostyrene derivatives with hexamethyldisilane, which is suitable for the preparation of a series of disubstituted, trisubstituted, and tetrasubstituted alkenylsilanes. Furthermore, the resulting tetrasubstituted alkenylsilanes could be readily transformed into the corresponding diarylated benzosiloles, which have been proven to be a potential AIE material and a fluorene material.
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Affiliation(s)
- Zi-Hang Ye
- Department of Chemistry, Key Laboratory of Surface and Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Xiasha West Higher Education District, Hangzhou 310018, P. R. China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai 200032, P. R. China
| | - Fei-Hu Gou
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai 200032, P. R. China
| | - Yichen Wu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai 200032, P. R. China
| | - Chuan-Ying Li
- Department of Chemistry, Key Laboratory of Surface and Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Xiasha West Higher Education District, Hangzhou 310018, P. R. China
| | - Peng Wang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai 200032, P. R. China.,CAS Key Laboratory of Energy Regulation Materials, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai 200032, P. R. China.,School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, P. R. China
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23
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Fan X, Zhang M, Gao Y, Zhou Q, Zhang Y, Yu J, Xu W, Yan J, Liu H, Lei Z, Ter YC, Chanmungkalakul S, Lum Y, Liu X, Cui G, Wu J. Stepwise on-demand functionalization of multihydrosilanes enabled by a hydrogen-atom-transfer photocatalyst based on eosin Y. Nat Chem 2023; 15:666-676. [PMID: 36894703 DOI: 10.1038/s41557-023-01155-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 02/03/2023] [Indexed: 03/11/2023]
Abstract
Organosilanes are of vital importance for modern human society, having found widespread applications in functional materials, organic synthesis, drug discovery and life sciences. However, their preparation remains far from trivial, and on-demand synthesis of heteroleptic substituted silicon reagents is a formidable challenge. The generation of silyl radicals from hydrosilanes via direct hydrogen-atom-transfer (HAT) photocatalysis represents the most atom-, step-, redox- and catalyst-economic pathway for the activation of hydrosilanes. Here, in view of the green characteristics of neutral eosin Y (such as its abundance, low cost, metal-free nature, absorption of visible light and excellent selectivity), we show that using it as a direct HAT photocatalyst enables the stepwise custom functionalization of multihydrosilanes, giving access to fully substituted silicon compounds. By exploiting this strategy, we realize preferable hydrogen abstraction of Si-H bonds in the presence of active C-H bonds, diverse functionalization of hydrosilanes (for example, alkylation, vinylation, allylation, arylation, deuteration, oxidation and halogenation), and remarkably selective monofunctionalization of di- and trihydrosilanes.
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Affiliation(s)
- Xuanzi Fan
- Department of Chemistry, National University of Singapore, Singapore, Republic of Singapore
| | - Muliang Zhang
- Department of Chemistry, National University of Singapore, Singapore, Republic of Singapore
| | - Yuanjun Gao
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, People's Republic of China
| | - Qi Zhou
- Department of Chemistry, National University of Singapore, Singapore, Republic of Singapore
| | - Yanbin Zhang
- Department of Chemistry, National University of Singapore, Singapore, Republic of Singapore
| | - Jiajia Yu
- Department of Chemistry, National University of Singapore, Singapore, Republic of Singapore
| | - Wengang Xu
- Department of Chemistry, National University of Singapore, Singapore, Republic of Singapore
| | - Jianming Yan
- Department of Chemistry, National University of Singapore, Singapore, Republic of Singapore
| | - Haiwang Liu
- Department of Chemistry, National University of Singapore, Singapore, Republic of Singapore
| | - Zhexuan Lei
- Department of Chemistry, National University of Singapore, Singapore, Republic of Singapore
| | - Yan Chong Ter
- Department of Chemistry, National University of Singapore, Singapore, Republic of Singapore
| | - Supphachok Chanmungkalakul
- Fluorescence Research Group, Singapore University of Technology and Design, Singapore, Republic of Singapore
| | - Yanwei Lum
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Republic of Singapore
| | - Xiaogang Liu
- Fluorescence Research Group, Singapore University of Technology and Design, Singapore, Republic of Singapore
| | - Ganglong Cui
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, People's Republic of China
| | - Jie Wu
- Department of Chemistry, National University of Singapore, Singapore, Republic of Singapore.
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24
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Prieto-Pascual U, Rodríguez-Diéguez A, Freixa Z, Huertos MA. Tailor-Made Synthesis of Hydrosilanols, Hydrosiloxanes, and Silanediols Catalyzed by di-Silyl Rhodium(III) and Iridium(III) Complexes. Inorg Chem 2023; 62:3095-3105. [PMID: 36757389 PMCID: PMC10863934 DOI: 10.1021/acs.inorgchem.2c03953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Indexed: 02/10/2023]
Abstract
Siloxanes and silanols containing Si-H units are important building blocks for the synthesis of functionalized siloxane materials, and their synthesis is a current challenge. Herein, we report the selective synthesis of hydrosilanols, hydrosiloxanes, and silanodiols depending on the nature of the catalysts and the silane used. Two neutral ({MCl[SiMe2(o-C6H4PPh2)]2}; M = Rh, Ir) and two cationic ({M[SiMe2(o-C6H4PPh2)]2(NCMe)}[BArF4]; M = Rh, Ir) have been synthesized and their catalytic behavior toward hydrolysis of secondary silanes has been described. Using the iridium complexes as precatalysts and diphenylsilane as a substrate, the product obtained is diphenylsilanediol. When rhodium complexes are used as precatalysts, it is possible to selectively obtain silanediol, hydrosilanol, and hydrosiloxane depending on the catalysts (neutral or cationic) and the silane substituents.
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Affiliation(s)
- Unai Prieto-Pascual
- Facultad
de Química, Universidad del País
Vasco (UPV/EHU), 20018 San Sebastián, Spain
| | | | - Zoraida Freixa
- Facultad
de Química, Universidad del País
Vasco (UPV/EHU), 20018 San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain
| | - Miguel A. Huertos
- Facultad
de Química, Universidad del País
Vasco (UPV/EHU), 20018 San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain
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25
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Lam RH, Keaveney ST, Messerle BA, Pernik I. Bimetallic Rhodium Complexes: Precatalyst Activation-Triggered Bimetallic Enhancement for the Hydrosilylation Transformation. ACS Catal 2023. [DOI: 10.1021/acscatal.2c04388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Raphael H. Lam
- School of Natural Sciences, Macquarie University, Sydney, New South Wales 2109, Australia
| | - Sinead T. Keaveney
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Barbara A. Messerle
- School of Natural Sciences, Macquarie University, Sydney, New South Wales 2109, Australia
- School of Chemistry, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Indrek Pernik
- School of Natural Sciences, Macquarie University, Sydney, New South Wales 2109, Australia
- School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
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26
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Karl TA, Seidl M, König B. Energy Harvesting: Synthetic Use of Recovered Energy in Electrochemical Late‐Stage Functionalization. ChemElectroChem 2023. [DOI: 10.1002/celc.202201097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Tobias A. Karl
- Faculty of Chemistry and Pharmacy University of Regensburg 93040 Regensburg Germany
| | - Max Seidl
- Faculty of Chemistry and Pharmacy University of Regensburg 93040 Regensburg Germany
| | - Burkhard König
- Faculty of Chemistry and Pharmacy University of Regensburg 93040 Regensburg Germany
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27
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Gao J, He C. Chiral Silanols: Strategies and Tactics for Their Synthesis. Chemistry 2023; 29:e202203475. [PMID: 36617499 DOI: 10.1002/chem.202203475] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 01/05/2023] [Accepted: 01/08/2023] [Indexed: 01/10/2023]
Abstract
Silanols are valuable and important compounds, which have found widespread applications in the field of materials science, synthetic chemistry, and medicinal chemistry. Although a handful of approaches have been developed for the synthesis of various silanols, access to enantioenriched silicon-stereogenic silanols remains underdeveloped. This Concept article intends to summarize and highlight recent advances in the construction of silicon-stereogenic silanols and endeavors to encourage further research in this area.
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Affiliation(s)
- Jihui Gao
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, P. R. China
| | - Chuan He
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, P. R. China.,Key Laboratory of Organosilicon Chemistry, and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, P. R. China
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28
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Cheng Z, Li M, Zhang XY, Sun Y, Yu QL, Zhang XH, Lu Z. Cobalt-Catalyzed Regiodivergent Double Hydrosilylation of Arylacetylenes. Angew Chem Int Ed Engl 2023; 62:e202215029. [PMID: 36330602 DOI: 10.1002/anie.202215029] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Indexed: 11/06/2022]
Abstract
Double hydrosilylation of alkynes represents a straightforward method to synthesize bis(silane)s, yet it is challenging if α-substituted vinylsilanes act as the intermediates. Here, a cobalt-catalyzed regiodivergent double hydrosilylation of arylacetylenes is reported for the first time involving this challenge, accessing both vicinal and geminal bis(silane)s with exclusive regioselectivity. Various novel bis(silane)s containing Si-H bonds can be easily obtained. The gram-scale reactions could be performed smoothly. Preliminarily mechanistic studies demonstrated that the reactions were initiated by cobalt-catalyzed α-hydrosilylation of alkynes, followed by cobalt-catalyzed β-hydrosilylation of the α-vinylsilanes to deliver vicinal bis(silane)s, or hydride-catalyzed α-hydrosilylation to give geminal ones. Notably, these bis(silane)s can be used for the synthesis of high-refractive-index polymers (nd up to 1.83), demonstrating great potential utility in optical materials.
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Affiliation(s)
- Zhaoyang Cheng
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
| | - Minghua Li
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
| | - Xu-Yang Zhang
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yue Sun
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Qing-Lei Yu
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Xing-Hong Zhang
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China.,Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Zhan Lu
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China.,Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China.,College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China.,Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, 310058, China
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29
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Lee D, Shintani R. Palladium-catalyzed synthesis of 4-sila-4 H-benzo[ d][1,3]oxazines by intramolecular Hiyama coupling. Chem Sci 2023; 14:4114-4119. [PMID: 37063809 PMCID: PMC10094166 DOI: 10.1039/d2sc06425a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 03/21/2023] [Indexed: 03/30/2023] Open
Abstract
A palladium-catalyzed synthesis of 4-sila-4H-benzo[d][1,3]oxazines, silicon-switched analogs of biologically relevant 4H-benzo[d][1,3]oxazines, was developed by the intramolecular Hiyama coupling of 3-amido-2-(arylsilyl)aryl triflates.
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Affiliation(s)
- Donghyeon Lee
- Division of Chemistry, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University Toyonaka Osaka 560-8531 Japan
| | - Ryo Shintani
- Division of Chemistry, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University Toyonaka Osaka 560-8531 Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University Suita Osaka 565-0871 Japan
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30
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Ye T, Zhao J, Zheng WX, Zhang J, Wang Z, Zhang FL. Synthesis of structurally diverse silicon-incorporated indolines via silyl radical-triggered radical cascade reactions. Org Chem Front 2023. [DOI: 10.1039/d3qo00153a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
Structurally diverse silicon-incorporated indolines were synthesized via a silyl radical-triggered radical addition–translocation–cyclization (RATC) process.
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31
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Lu MZ, Goh J, Maraswami M, Jia Z, Tian JS, Loh TP. Recent Advances in Alkenyl sp 2 C-H and C-F Bond Functionalizations: Scope, Mechanism, and Applications. Chem Rev 2022; 122:17479-17646. [PMID: 36240299 DOI: 10.1021/acs.chemrev.2c00032] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Alkenes and their derivatives are featured widely in a variety of natural products, pharmaceuticals, and advanced materials. Significant efforts have been made toward the development of new and practical methods to access this important class of compounds by selectively activating the alkenyl C(sp2)-H bonds in recent years. In this comprehensive review, we describe the state-of-the-art strategies for the direct functionalization of alkenyl sp2 C-H and C-F bonds until June 2022. Moreover, metal-free, photoredox, and electrochemical strategies are also covered. For clarity, this review has been divided into two parts; the first part focuses on currently available alkenyl sp2 C-H functionalization methods using different alkene derivatives as the starting materials, and the second part describes the alkenyl sp2 C-F bond functionalization using easily accessible gem-difluoroalkenes as the starting material. This review includes the scope, limitations, mechanistic studies, stereoselective control (using directing groups as well as metal-migration strategies), and their applications to complex molecule synthesis where appropriate. Overall, this comprehensive review aims to document the considerable advancements, current status, and emerging work by critically summarizing the contributions of researchers working in this fascinating area and is expected to stimulate novel, innovative, and broadly applicable strategies for alkenyl sp2 C-H and C-F bond functionalizations in the coming years.
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Affiliation(s)
- Ming-Zhu Lu
- College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhengzhou 450001, China.,School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Jeffrey Goh
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Manikantha Maraswami
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Zhenhua Jia
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jie-Sheng Tian
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Teck-Peng Loh
- College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhengzhou 450001, China.,School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore.,Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
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32
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Antico E, Leutzsch M, Wessel N, Weyhermüller T, Werlé C, Leitner W. Selective oxidation of silanes into silanols with water using [MnBr(CO) 5] as a precatalyst. Chem Sci 2022; 14:54-60. [PMID: 36605749 PMCID: PMC9769106 DOI: 10.1039/d2sc05959b] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 11/18/2022] [Indexed: 12/03/2022] Open
Abstract
The development of earth-abundant catalysts for the selective conversion of silanes to silanols with water as an oxidant generating valuable hydrogen as the only by-product continues to be a challenge. Here, we demonstrate that [MnBr(CO)5] is a highly active precatalyst for this reaction, operating under neutral conditions and avoiding the undesired formation of siloxanes. As a result, a broad substrate scope, including primary and secondary silanes, could be converted to the desired products. The turnover performances of the catalyst were also examined, yielding a maximum TOF of 4088 h-1. New light was shed on the debated mechanism of the interaction between [MnBr(CO)5] and Si-H bonds based on the reaction kinetics (including KIEs of PhMe2SiD and D2O) and spectroscopic techniques (FT-IR, GC-TCD, 1H-, 29Si-, and 13C-NMR). The initial activation of [MnBr(CO)5] was found to result from the formation of a manganese(i) hydride species and R3SiBr, and the experimental data are most consistent with a catalytic cycle comprising a cationic tricarbonyl Mn(i) unit as the active framework.
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Affiliation(s)
- Emanuele Antico
- Max Planck Institute for Chemical Energy ConversionStiftstr. 34–3645470 Mülheim an der RuhrGermany,Institut für Technische und Makromolekulare Chemie (ITMC), RWTH Aachen UniversityWorringer Weg 252074 AachenGermany
| | - Markus Leutzsch
- Max-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 145470 Mülheim an der RuhrGermany
| | - Niklas Wessel
- Max Planck Institute for Chemical Energy ConversionStiftstr. 34–3645470 Mülheim an der RuhrGermany,Institut für Technische und Makromolekulare Chemie (ITMC), RWTH Aachen UniversityWorringer Weg 252074 AachenGermany
| | - Thomas Weyhermüller
- Max Planck Institute for Chemical Energy ConversionStiftstr. 34–3645470 Mülheim an der RuhrGermany
| | - Christophe Werlé
- Max Planck Institute for Chemical Energy ConversionStiftstr. 34–3645470 Mülheim an der RuhrGermany,Ruhr University BochumUniversitätsstr. 15044801 BochumGermany
| | - Walter Leitner
- Max Planck Institute for Chemical Energy ConversionStiftstr. 34–3645470 Mülheim an der RuhrGermany,Institut für Technische und Makromolekulare Chemie (ITMC), RWTH Aachen UniversityWorringer Weg 252074 AachenGermany
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33
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Shi Y, Shi X, Zhang J, Qin Y, Li B, Zhao D. Sila-spirocyclization involving unstrained C(sp 3)-Si bond cleavage. Nat Commun 2022; 13:6697. [PMID: 36335183 PMCID: PMC9637223 DOI: 10.1038/s41467-022-34466-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 10/26/2022] [Indexed: 11/07/2022] Open
Abstract
C - Si Bond cleavage is one of the key elemental steps for a wide variety of silicon-based transformations. However, the cleavage of unstrained Si-C(sp3) bonds catalyzed by transition metal are still in their infancy. They generally involve the insertion of a M - C(sp2) species into the C - Si bond and consequent intramolecular C(sp2)‒Si coupling to exclusively produce siloles. Here we report the Pd-catalyzed sila-spirocyclization, in which the Si-C(sp3) bond is activated by the insertion of a M - C(sp3) species and followed by the formation of a new C(sp3)‒Si bond, allowing the construction of diverse spirosilacycles. This reactivity mode, which is strongly supported by DFT calculations may open an avenue for the Si-C(sp3) bond cleavage and silacycle synthesis.
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Affiliation(s)
- Yufeng Shi
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Haihe Laboratory of Sustainable Chemical Transformations, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Xiaonan Shi
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Haihe Laboratory of Sustainable Chemical Transformations, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Jinyu Zhang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Haihe Laboratory of Sustainable Chemical Transformations, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Ying Qin
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Haihe Laboratory of Sustainable Chemical Transformations, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Bo Li
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91106, USA.
| | - Dongbing Zhao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Haihe Laboratory of Sustainable Chemical Transformations, College of Chemistry, Nankai University, Tianjin, 300071, China.
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34
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Pawley SB, Conner AM, Omer HM, Watson DA. Development of a General Method for the Hiyama-Denmark Cross-Coupling of Tetrasubstituted Vinyl Silanes. ACS Catal 2022; 12:13108-13115. [PMID: 36817085 PMCID: PMC9933925 DOI: 10.1021/acscatal.2c03981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
General conditions for the Hiyama-Denmark cross-coupling of tetrasubstituted vinyl silanes and aryl halides are reported. Prior reports of Hiyama-Denmark reactions of tetrasubstituted vinyl silanes have required the use of vinyl silanols or silanolates, which are challenging to handle, or internally activated vinyl silanes, which lack structural generality. Now, unactivated tetrasubstituted vinyl silanes, bearing bench-stable tetraorganosilicon centers, and aryl halides can be coupled. The key to this discovery is the identification of dimethyl(5-methylfuryl)vinylsilanes as bench stable and easily prepared cross-coupling partners that are readily activated under mild conditions in Hiyama-Denmark couplings. These palladium-catalyzed cross-couplings proceed well with aryl chlorides, though aryl bromides and iodides are also tolerated, and the reactions display high stereospecificity in the formation of tetrasubstituted alkenes. In addition, only a mild base (KOSiMe3) and common solvents (THF/DMA) are required, and importantly toxic additives (such as 18-crown-6) are not needed. We also show that these conditions are equally applicable to Hiyama-Denamrk coupling of trisubstituted vinyl silanes.
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Affiliation(s)
| | | | - Humair M. Omer
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716
| | - Donald A. Watson
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716
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35
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Sun H, Cheng Y, Teng H, Chen X, Niu X, Yang H, Cui YM, Xu LW, Yang L. 3-Alkyl-2-pyridyl Directing Group-Enabled C2 Selective C-H Silylation of Indoles and Pyrroles via an Iridium Catalyst. J Org Chem 2022; 87:13346-13351. [PMID: 36129738 DOI: 10.1021/acs.joc.2c01385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An iridium-catalyzed, directing group-enabled site selective intra- and intermolecular silylation of indoles and pyrroles with hydrosilanes has been developed under ligand-free conditions. Fine-tuning of the removable 3-alkyl-2-pyridyl directing group was found to be crucial for achieving high yields for C2-silylated indole and pyrrole products. Moreover, the scalability was demonstrated, and further transformations of the silylation products were achieved.
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Affiliation(s)
- Hui Sun
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Yi Cheng
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Houyun Teng
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Xiaoqi Chen
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Xiaokang Niu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Hao Yang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Yu-Ming Cui
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Li-Wen Xu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Lei Yang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
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36
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Le TMT, Brégent T, Jubault P, Poisson T. Photocatalytic E→Z Contra-Thermodynamic Isomerization of Vinyl Silanes with Lewis Base. Chemistry 2022; 28:e202201514. [PMID: 35652371 PMCID: PMC9541780 DOI: 10.1002/chem.202201514] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Indexed: 11/22/2022]
Abstract
Herein, we disclosed the contra-thermodynamic E→Z isomerization of alkenyl silanes, according to the in situ formation of a chromophoric species, in the presence of rac-BINAP as the catalyst. The reaction carried out in DMSO or CH3 CN under irradiation at 405 nm allowed the interconversion of the E-isomers into the Z-congeners in good to excellent yields and outstanding Z/E selectivities, on 18 examples. Finally, the mechanism of this E→Z isomerization was studied to get insight into the reaction mechanism.
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Affiliation(s)
- Thi Minh Thi Le
- Normandie Univ.INSA RouenUNIROUENCNRSCOBRA (UMR 6014)76000RouenFrance
| | - Thibaud Brégent
- Normandie Univ.INSA RouenUNIROUENCNRSCOBRA (UMR 6014)76000RouenFrance
| | - Philippe Jubault
- Normandie Univ.INSA RouenUNIROUENCNRSCOBRA (UMR 6014)76000RouenFrance
| | - Thomas Poisson
- Normandie Univ.INSA RouenUNIROUENCNRSCOBRA (UMR 6014)76000RouenFrance
- Institut Universitaire de France1 rue Descartes75231ParisFrance
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37
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Almenara N, Garralda MA, Lopez X, Matxain JM, Freixa Z, Huertos MA. Hydrogen Tunneling in Catalytic Hydrolysis and Alcoholysis of Silanes. Angew Chem Int Ed Engl 2022; 61:e202204558. [PMID: 35833924 PMCID: PMC9545861 DOI: 10.1002/anie.202204558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Indexed: 11/11/2022]
Abstract
An unprecedented quantum tunneling effect has been observed in catalytic Si−H bond activations at room temperature. The cationic hydrido‐silyl‐iridium(III) complex, {Ir[SiMe(o‐C6H4SMe)2](H)(PPh3)(THF)}[BArF4], has proven to be a highly efficient catalyst for the hydrolysis and the alcoholysis of organosilanes. When triethylsilane was used as a substrate, the system revealed the largest kinetic isotopic effect (KIESi−H/Si−D=346±4) ever reported for this type of reaction. This unexpectedly high KIE, measured at room temperature, together with the calculated Arrhenius preexponential factor ratio (AH/AD=0.0004) and difference in the observed activation energy [(EaD
−EaH
)=34.07 kJ mol−1] are consistent with the participation of quantum tunneling in the catalytic process. DFT calculations have been used to unravel the reaction pathway and identify the rate‐determining step. Aditionally, isotopic effects were considered by different methods, and tunneling effects have been calculated to be crucial in the process.
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Affiliation(s)
- Naroa Almenara
- University of Basque Country (UPV/EHU) Donostia-San Sebastian 20018 San Sebastián Spain
| | - Maria A. Garralda
- University of Basque Country (UPV/EHU) Donostia-San Sebastian 20018 San Sebastián Spain
| | - Xabier Lopez
- University of Basque Country (UPV/EHU) Donostia-San Sebastian 20018 San Sebastián Spain
- Donostia International Physics Center (DIPC) 20018 San Sebastián Spain
| | - Jon M. Matxain
- University of Basque Country (UPV/EHU) Donostia-San Sebastian 20018 San Sebastián Spain
- Donostia International Physics Center (DIPC) 20018 San Sebastián Spain
| | - Zoraida Freixa
- University of Basque Country (UPV/EHU) Donostia-San Sebastian 20018 San Sebastián Spain
- IKERBASQUE. Basque Foundation for Science 48013 Bilbao Spain
| | - Miguel A. Huertos
- University of Basque Country (UPV/EHU) Donostia-San Sebastian 20018 San Sebastián Spain
- IKERBASQUE. Basque Foundation for Science 48013 Bilbao Spain
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38
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Yang B, Cao K, Zhao G, Yang J, Zhang J. Pd/Ming-Phos-Catalyzed Asymmetric Three-Component Arylsilylation of N-Sulfonylhydrazones: Enantioselective Synthesis of gem-Diarylmethine Silanes. J Am Chem Soc 2022; 144:15468-15474. [PMID: 35994322 DOI: 10.1021/jacs.2c07037] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A Pd-catalyzed enantioselective three-component reaction of N-sulfonylhydrazones, aryl bromides, and silylboronic esters is developed, enabling the synthesis of chiral gem-diarylmethine silanes in high enantioselectivity with the use of a newly identified Ming-Phos. Compared with N-tosyl, the more easily decomposed N-mesitylsulfonyl is more suitable as the masking group of electron-rich hydrazone to improve the reaction efficiency. The reaction features a broad scope concerning both coupling partners, high enantioselectivity, and mild reaction conditions. The ready access to enantiomers and utility of this catalytic method are also presented.
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Affiliation(s)
- Bin Yang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
| | - Kangning Cao
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
| | - Guofeng Zhao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai 200062, China
| | - Junfeng Yang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
| | - Junliang Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China.,Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai 200062, China
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39
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Yuan W, Zhu X, Xu Y, He C. Synthesis of Si‐Stereogenic Silanols by Catalytic Asymmetric Hydrolytic Oxidation. Angew Chem Int Ed Engl 2022; 61:e202204912. [DOI: 10.1002/anie.202204912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Indexed: 12/21/2022]
Affiliation(s)
- Wei Yuan
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Xujiang Zhu
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Yankun Xu
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Chuan He
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen Guangdong 518055 China
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40
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Almenara N, Garralda MA, Lopez X, Matxain JM, Freixa Z, Huertos MA. Hydrogen Tunneling in Catalytic Hydrolysis and Alcoholysis of Silanes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Naroa Almenara
- Universidad del País Vasco: Universidad del Pais Vasco Química Aplicada SPAIN
| | - Maria A. Garralda
- Universidad del País Vasco: Universidad del Pais Vasco Química Aplicada SPAIN
| | - Xabier Lopez
- Universidad del País Vasco: Universidad del Pais Vasco Quimica Fisica SPAIN
| | - Jon M. Matxain
- Universidad del País Vasco: Universidad del Pais Vasco Quimica Fisica SPAIN
| | - Zoraida Freixa
- Universidad del País Vasco: Universidad del Pais Vasco Quimica Aplicada SPAIN
| | - Miguel A. Huertos
- Universidad del Pais Vasco Química Aplicada Avda. Manuel de Lardizabal, 3 20018 San Sebastián SPAIN
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41
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Zhang X, Zhang F, Li X, Lu MZ, Meng X, Huang L, Luo H. Direct Synthesis of Biphenyl-2-carbonitriles by Rh(III)-Catalyzed C-H Hiyama Cross-Coupling in Water. Org Lett 2022; 24:5029-5033. [PMID: 35822841 DOI: 10.1021/acs.orglett.2c01754] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This method represents an efficient rhodium(III)-catalyzed o-C-H arylation of readily available benzimidate derivatives with diverse arylsilanes in water as a sustainable solvent, enabling the straightforward synthesis of potentially useful biphenyl-2-carbonitrile derivatives. This silicon-based protocol employs benzimidates as both an efficacious directing group and the source of a nitrile group.
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Affiliation(s)
- Xiuqi Zhang
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Fukuan Zhang
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Xiaolan Li
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Ming-Zhu Lu
- College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhenzhou 450001, China
| | - Xin Meng
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Lei Huang
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Haiqing Luo
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
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42
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Gao J, Mai PL, Ge Y, Yuan W, Li Y, He C. Copper-Catalyzed Desymmetrization of Prochiral Silanediols to Silicon-Stereogenic Silanols. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02482] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jihui Gao
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150080, China
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Pei-Lin Mai
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Yicong Ge
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
- Sichuan Province Key Laboratory of Natural Products and Small Molecule Synthesis, School of New Energy Materials and Chemistry, Leshan Normal University, Leshan 614000, China
| | - Wei Yuan
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Yingzi Li
- Shenzhen Institute of Advanced Technology, University of Chinese Academy of Sciences, Chinese Academy of Sciences Shenzhen, Guangdong 518055, China
| | - Chuan He
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
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43
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Molinillo P, Lacroix B, Vattier F, Rendón N, Suárez A, Lara P. Reduction of N 2O with hydrosilanes catalysed by RuSNS nanoparticles. Chem Commun (Camb) 2022; 58:7176-7179. [PMID: 35670417 DOI: 10.1039/d2cc01470j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of RuSNS nanoparticles, prepared by decomposition of Ru(COD)(COT) with H2 in the presence of an SNS ligand, have been found to catalyse the reduction of the greenhouse gas N2O to N2 employing different hydrosilanes.
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Affiliation(s)
- Pablo Molinillo
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica, and Centro de Innovación en Química Avanzada (ORFEO-CINQA), CSIC and Universidad de Sevilla. Avda. Américo Vespucio 49, 41092 Sevilla, Spain.
| | - Bertrand Lacroix
- Department of Material Science and Metallurgic Engineering, and Inorganic Chemistry, University of Cádiz, Spain.,IMEYMAT: Institute of Research on Electron Microscopy and Materials of the University of Cádiz, Spain
| | - Florencia Vattier
- Instituto de Ciencia de Materiales de Sevilla, CSIC-Universidad de Sevilla. Avda. Américo Vespucio 49, 41092 Sevilla, Spain
| | - Nuria Rendón
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica, and Centro de Innovación en Química Avanzada (ORFEO-CINQA), CSIC and Universidad de Sevilla. Avda. Américo Vespucio 49, 41092 Sevilla, Spain.
| | - Andrés Suárez
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica, and Centro de Innovación en Química Avanzada (ORFEO-CINQA), CSIC and Universidad de Sevilla. Avda. Américo Vespucio 49, 41092 Sevilla, Spain.
| | - Patricia Lara
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica, and Centro de Innovación en Química Avanzada (ORFEO-CINQA), CSIC and Universidad de Sevilla. Avda. Américo Vespucio 49, 41092 Sevilla, Spain.
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44
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Yuan W, Zhu X, Xu Y, He C. Synthesis of Si‐Stereogenic Silanols by Catalytic Asymmetric Hydrolytic Oxidation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Wei Yuan
- Southern University of Science and Technology Chemistry CHINA
| | - Xujiang Zhu
- Southern University of Science and Technology Chemistry CHINA
| | - Yankun Xu
- Southern University of Science and Technology Chemistry CHINA
| | - Chuan He
- Southern University of Science and Technology Chemistry No 1088,xueyuan Rd.Xili, Nanshan District 518055 Shenzhen CHINA
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45
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Delaney CP, Marron DP, Shved AS, Zare RN, Waymouth RM, Denmark SE. Potassium Trimethylsilanolate-Promoted, Anhydrous Suzuki-Miyaura Cross-Coupling Reaction Proceeds via the "Boronate Mechanism": Evidence for the Alternative Fork in the Trail. J Am Chem Soc 2022; 144:4345-4364. [PMID: 35230833 PMCID: PMC8930609 DOI: 10.1021/jacs.1c08283] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Previous studies have shown that the critical transmetalation step in the Suzuki-Miyaura cross-coupling proceeds through a mechanism wherein an arylpalladium hydroxide complex reacts with an aryl boronic acid, termed the oxo-palladium pathway. Moreover, these same studies have established that the reaction between an aryl boronate and an arylpalladium halide complex (the boronate pathway) is prohibitively slow. Herein, studies on isolated intermediates, along with kinetic analysis, have demonstrated that the Suzuki-Miyaura reaction promoted by potassium trimethylsilanolate (TMSOK) proceeds through the boronate pathway, in contrast with other, established systems. Furthermore, an unprecedented, binuclear palladium(I) complex containing a μ-phenyl bridging ligand was characterized by NMR spectroscopy, mass spectrometry, and computational methods. Density functional theory (DFT) calculations suggest that the binuclear complex exhibits an open-shell ground electronic state, and reaction kinetics implicate the complex in the catalytic cycle. These results expand the breadth of potential mechanisms by which the Suzuki-Miyaura reaction can occur, and the novel binuclear palladium complex discovered has broad implications for palladium-mediated cross-coupling reactions of aryl halides.
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Affiliation(s)
- Connor P Delaney
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Daniel P Marron
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Alexander S Shved
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Richard N Zare
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Robert M Waymouth
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Scott E Denmark
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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46
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Corpas J, Mauleón P, Gómez Arrayás R, Carretero JC. E/Z
Photoisomerization of Olefins as an Emergent Strategy for the Control of Stereodivergence in Catalysis. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200199] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Javier Corpas
- Department of Organic Chemistry Institute for Advanced Research in Chemical Sciences (IAdChem) Center for Innovation in Advanced Chemistry (ORFEO-CINQA). Universidad Autónoma de Madrid Cantoblanco 28049 Madrid Spain
| | - Pablo Mauleón
- Department of Organic Chemistry Institute for Advanced Research in Chemical Sciences (IAdChem) Center for Innovation in Advanced Chemistry (ORFEO-CINQA). Universidad Autónoma de Madrid Cantoblanco 28049 Madrid Spain
| | - Ramón Gómez Arrayás
- Department of Organic Chemistry Institute for Advanced Research in Chemical Sciences (IAdChem) Center for Innovation in Advanced Chemistry (ORFEO-CINQA). Universidad Autónoma de Madrid Cantoblanco 28049 Madrid Spain
| | - Juan C. Carretero
- Department of Organic Chemistry Institute for Advanced Research in Chemical Sciences (IAdChem) Center for Innovation in Advanced Chemistry (ORFEO-CINQA). Universidad Autónoma de Madrid Cantoblanco 28049 Madrid Spain
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47
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Wang YF, He YH, Su Y, Ji Y, Li R. Asymmetric Hydrosilylation of β-Silyl Styrenes Catalyzed by a Chiral Palladium Complex. J Org Chem 2022; 87:2831-2844. [PMID: 35080877 DOI: 10.1021/acs.joc.1c02734] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A palladium complex coordinated with a chiral SIPHOS ligand was evaluated as an efficient catalyst for asymmetric hydrosilylation of β-silyl styrenes with trichlorosilane and 23 1,2-bis(silyl) chiral compounds were produced. Good to excellent enantioselectivities were observed with 1-aryl-2-silyl ethanols, where the trichlorosilyl groups of the hydrosilylation products were selectively converted into a hydroxyl group in the presence of pre-installed trialkylsilyl groups. Asymmetric hydrosilylation of β-silyl styrenes followed by methylation of the trichlorosilyl group gave stable 1,2-bis(silyl) chiral compounds 4 with excellent yields. DFT calculations of hydridopalladium B coordinated with a SIPHOS ligand, an intermediate of the hydrosilylation reaction, established the optical structures to be energy minima, and the structural information could well illustrate the enantioselectivity for the hydrosilylation reaction.
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Affiliation(s)
- Yi-Fan Wang
- State Key Laboratory of High-Efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - Yu-Han He
- College of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, China
| | - Yan Su
- State Key Laboratory of High-Efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - Yang Ji
- State Key Laboratory of High-Efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - Rui Li
- State Key Laboratory of High-Efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
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48
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Morisue M, Ohno N, Saito G, Kawanishi M. Trimethylsilanolate-Promoted Activation of Alkynyl Trimethylsilanes: Hiyama-Type Sonogashira Cross-Coupling for the Synthesis of Arylene–Ethynylene-Linked Porphyrin Arrays. J Org Chem 2022; 87:3123-3134. [DOI: 10.1021/acs.joc.1c02879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mitsuhiko Morisue
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Nanase Ohno
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Genki Saito
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Miho Kawanishi
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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49
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Xue Y, Guo Z, Chen X, Li J, Zou D, Wu Y, Wu Y. Copper-promoted difunctionalization of unactivated alkenes with silanes. Org Biomol Chem 2022; 20:989-994. [PMID: 35018960 DOI: 10.1039/d1ob02318g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
An efficient copper-catalyzed cascade difunctionalization of N-allyl anilines toward the synthesis of silylated indolines using commercially available silanes has been reported. This strategy provides a new avenue for the synthesis of a diverse array of indolines in reasonable yields. Preliminary mechanistic investigations indicate that the reaction probably proceeds via a radical pathway with unactivated alkenes as radical acceptors and simple silanes as radical precursors. This protocol is distinguished by its atom economy, broad substrate scope and readily available starting materials.
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Affiliation(s)
- Yingying Xue
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450052, People's Republic of China.
| | - Zhuangzhuang Guo
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450052, People's Republic of China.
| | - Xiaoyu Chen
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450052, People's Republic of China.
| | - Jingya Li
- TetranovBiopharm, LLC., Zhengzhou, 450052, People's Republic of China
| | - Dapeng Zou
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450052, People's Republic of China.
| | - Yangjie Wu
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450052, People's Republic of China.
| | - Yusheng Wu
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450052, People's Republic of China. .,Tetranov International, Inc., 100 Jersey Avenue, Suite A340, New Brunswick, NJ 08901, USA.
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50
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O’Neil GW. Siletanes: Synthesis, Structure, and Reagents in Organic Synthesis. A Review. ORG PREP PROCED INT 2022. [DOI: 10.1080/00304948.2021.2007018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Gregory W. O’Neil
- Department of Chemistry, Western Washington University, Bellingham, Washington, USA
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