1
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Zou XJ, Jin ZX, Yang HY, Wu F, Ren ZH, Guan ZH. Palladium-Catalyzed Inward Isomerization Hydroaminocarbonylation of Alkenes. Angew Chem Int Ed Engl 2024; 63:e202406226. [PMID: 38618886 DOI: 10.1002/anie.202406226] [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: 04/01/2024] [Revised: 04/12/2024] [Accepted: 04/14/2024] [Indexed: 04/16/2024]
Abstract
In contrast to the kinetically favored outward isomerization-hydrocarbonylation of alkenes, the disfavored inward isomerization-hydrocarbonylation of alkenes remains an important challenge. Herein, we have developed a novel and effective palladium-catalyzed inward isomerization-hydroaminocarbonylation of unactivated alkenes and aniline hydrochlorides for the formation of synthetically valuable α-aryl carboxylic amides in high yields and high site-selectivities. The high efficiency of the reaction is attributed to a relay catalysis strategy, in which the Markovnikov-favored [PdH]-PtBu3 catalyst is responsible for inward isomerization, while the [PdH]-Ruphos catalyst is responsible for hydroaminocarbonylation of the resulting conjugated aryl alkenes. The reaction exhibits highly functional group tolerance and provides a new method for formal carbonylation of remote C(sp3)-H bond.
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Affiliation(s)
- Xian-Jin Zou
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an, 710127, P.R. China
| | - Zhao-Xing Jin
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an, 710127, P.R. China
| | - Hui-Yi Yang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an, 710127, P.R. China
| | - Fei Wu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an, 710127, P.R. China
| | - Zhi-Hui Ren
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an, 710127, P.R. China
| | - Zheng-Hui Guan
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an, 710127, P.R. China
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2
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Muto K, Hatanaka M, Kakiuchi F, Kochi T. Conformational Isomerization as a Process to Determine Selectivity over Reaction Pathways: Effect of Alkene Rotation in Chain Walking via Cis Alkene Intermediates. J Org Chem 2024; 89:4712-4721. [PMID: 38526974 DOI: 10.1021/acs.joc.3c02960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
In organic reactions, bond-forming and bond-cleaving processes are generally considered to be more important than other processes such as conformational isomerization. We report herein an example where a conformational isomerization process, propeller-like alkene rotation, is considered to determine the selectivity over the reaction pathways. The transition state with the highest energy barrier in some alkylpalladium isomerization (chain walking) events was theoretically indicated to correspond to alkene rotation, while transition states for bond-cleaving β-hydride elimination and bond-forming migratory insertion were not even observed. It was also suggested both theoretically and experimentally that the palladium chain walking over internal carbons in alkyl chains proceeds via cis alkene intermediates rather than thermodynamically more stable trans alkene intermediates, due to their relative difficulty to undergo alkene rotation.
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Affiliation(s)
- Kazuma Muto
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Miho Hatanaka
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Fumitoshi Kakiuchi
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Takuya Kochi
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
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3
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Bhoyare VW, Tathe AG, Gandon V, Patil NT. Unlocking the Chain-Walking Process in Gold Catalysis. Angew Chem Int Ed Engl 2023; 62:e202312786. [PMID: 37779346 DOI: 10.1002/anie.202312786] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/28/2023] [Accepted: 09/29/2023] [Indexed: 10/03/2023]
Abstract
The successful realization of gold-catalyzed chain-walking reactions, facilitated by ligand-enabled Au(I)/Au(III) redox catalysis, has been reported for the first time. This breakthrough has led to the development of gold-catalyzed annulation reaction of alkenes with iodoarenes by leveraging the interplay of chain-walking and π-activation reactivity mode. The reaction mechanism has been elucidated through comprehensive experimental and computational studies.
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Affiliation(s)
- Vivek W Bhoyare
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, 462 066, Bhopal, India
| | - Akash G Tathe
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, 462 066, Bhopal, India
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (UMR CNRS 8182), Paris-Saclay University, bâtiment Henri Moissan, 17 avenue des sciences, 91400, Orsay, France
| | - Nitin T Patil
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, 462 066, Bhopal, India
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4
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Chen XX, Luo H, Chen YW, Liu Y, He ZT. Enantioselective Palladium-Catalyzed Directed Migratory Allylation of Remote Dienes. Angew Chem Int Ed Engl 2023; 62:e202307628. [PMID: 37387558 DOI: 10.1002/anie.202307628] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 06/30/2023] [Accepted: 06/30/2023] [Indexed: 07/01/2023]
Abstract
Chain walking has been an efficient route to realize the functionalization of inert C(sp3 )-H bonds, but this strategy is limited to mono-olefin migration and functionalization. Herein, we demonstrate the feasibility of tandem directed simultaneous migrations of remote olefins and stereoselective allylation for the first time. The adoption of palladium hydride catalysis and secondary amine morpholine as solvent is critical for achieving high substrate compatibility and stereochemical control with this method. The protocol is also applicable to the functionalization of three vicinal C(sp3 )-H bonds and thus construct three continuous stereocenters along a propylidene moiety via a short synthetic process. Preliminary mechanistic experiments corroborated the design of simultaneous walking of remote dienes.
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Affiliation(s)
- Xian-Xiao Chen
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai, 200032, China
| | - Hao Luo
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai, 200032, China
| | - Ye-Wei Chen
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai, 200032, China
| | - Yang Liu
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai, 200032, China
| | - Zhi-Tao He
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai, 200032, China
- School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
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5
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Luan YY, Li JY, Gou XY, Shi WY, Ding T, Zhang Z, Chen X, Liu XY, Liang YM. Stereoselective Synthesis of Multisubstituted Alkenes via Ruthenium-Catalyzed Remote Migration Arylation of Nonactivated Olefins. Org Lett 2023. [PMID: 37399076 DOI: 10.1021/acs.orglett.3c01844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
Polysubstituted alkenes are an important class of organic intermediates that widely exist in various natural products and drug molecules. Herein, we reported a stereoselective synthesis of multisubstituted alkenes via ruthenium-catalyzed remote migration arylation of nonactivated olefins. This strategy exhibited wide substrate suitability and excellent functional group tolerance. In addition, we demonstrated the indispensable role of two types of ruthenium through mechanism experiments.
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Affiliation(s)
- Yu-Yong Luan
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Jin-Ye Li
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Xue-Ya Gou
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Wei-Yu Shi
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Tian Ding
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Zhe Zhang
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Xi Chen
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Xue-Yuan Liu
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
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6
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Song H, Zhang W, Zhou H, Wei J, Cai X, Yang F, Li W, Xu C. Remote Site-Selective C(sp 3)–H Monodeuteration of Unactivated Alkenes via Chain-Walking Strategy. ACS Catal 2023. [DOI: 10.1021/acscatal.3c00559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Affiliation(s)
- Heng Song
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, P. R. China
| | - Wenjing Zhang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
| | - Hu Zhou
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, P. R. China
| | - Jingjing Wei
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, P. R. China
| | - Xingwei Cai
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, P. R. China
| | - Fu Yang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, P. R. China
| | - Wei Li
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, P. R. China
| | - Chen Xu
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, P. R. China
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7
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Kanno S, Kakiuchi F, Kochi T. Palladium-Catalyzed Hydroboration/Cyclization of 1, n-Dienes. J Org Chem 2023; 88:2621-2630. [PMID: 36701792 DOI: 10.1021/acs.joc.2c02781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
While the hydroboration of alkenes is well established, the corresponding cyclization reaction of dienes remains challenging. Here, we report a new method for hydroboration/cyclization applicable to various 1,n-dienes and hydroboranes. The method features the direct synthesis of borylalkyl cyclopentanes from common 1,6-dienes, which is highlighted by syntheses of elaborated pyrrolidine cores from easily accessible diallylamines. Notably, 1,n-dienes (n > 6) also undergo five-membered ring formation, offering "remote" hydroboration/cyclization that would be otherwise difficult to achieve.
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Affiliation(s)
- Shota Kanno
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Fumitoshi Kakiuchi
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Takuya Kochi
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
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8
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Kong S, Zhang M, Wang S, Wu H, Zou H, Huang G. Mechanism and Origins of Diastereo- and Regioselectivities of Palladium-Catalyzed Remote Diborylative Cyclization of Dienes via Chain-Walking Strategy. Chem Asian J 2023; 18:e202201057. [PMID: 36415038 DOI: 10.1002/asia.202201057] [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: 10/16/2022] [Revised: 11/20/2022] [Indexed: 11/24/2022]
Abstract
Density functional theory calculations have been performed to investigate the palladium-catalyzed remote diborylative cyclization of dienes. The computations reveal that the reaction proceeds through a rarely explored Pd(II)/Pd(IV) catalytic cycle, and the formal σ-bond metathesis between the alkylpalladium intermediate and B2 pin2 occurs via the pathway of the B-B oxidative addition/C-B reductive elimination involving the high-valent Pd(IV) species. The diastereoselectivity is determined by the migratory insertion into the Pd-C bond, which is mainly due to the combination of the torsional strain effect, steric repulsion and C-H-O hydrogen-bonding interaction. The steric hindrance around the reacting carbon group in the C-B reductive elimination turns out to be a key factor to provide the driving force of the chain walking of the Pd center to the terminal primary carbon position, enabling the experimentally observed remote regioselectivity.
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Affiliation(s)
- Shuqi Kong
- Department of Chemistry, School of Science, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin, 300072, P. R. China
| | - Mengyao Zhang
- Department of Chemistry, School of Science, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin, 300072, P. R. China
| | - Shiyu Wang
- Department of Chemistry, School of Science, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin, 300072, P. R. China
| | - Hongli Wu
- Department of Chemistry, School of Science, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin, 300072, P. R. China
| | - Hongyan Zou
- Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, Tianjin, 300387, P. R. China
| | - Genping Huang
- Department of Chemistry, School of Science, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin, 300072, P. R. China
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9
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Shigekane M, Arai T, Tamura M, Uchida T, Kakiuchi F, Kochi T. Desymmetrization of Prochiral Methylenes by Asymmetric Chain-Walking Cyclization Using Bioxazoline Palladium Catalysts. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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10
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Hwang Y, Baek SB, Kim D, Chang S. Chain Walking as a Strategy for Iridium-Catalyzed Migratory Amidation of Alkenyl Alcohols to Access α-Amino Ketones. J Am Chem Soc 2022; 144:4277-4285. [PMID: 35200026 DOI: 10.1021/jacs.2c00948] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Catalytic carbon-nitrogen bond formation in hydrocarbons is an appealing synthetic tool to access valuable nitrogen-containing compounds. Although a number of synthetic approaches have been developed to construct a bifunctional α-amino carbonyl scaffold in this realm, installation of an amino functionality at the remote and unfunctionalized aliphatic sites remains underdeveloped. Here we present a tandem iridium catalysis that enables the redox-relay amidation of alkenyl alcohols via chain walking and metal-nitrenoid transfer, which eventually offers a new route to various α-amino ketones with excellent regioselectivity. The virtue of this transformation is that an unrefined isomeric mixture of alkenyl alcohols can be utilized as the readily available starting materials to lead to the regioconvergent amidation. Mechanistic investigations revealed that the reaction proceeds via a tandem process involving two key components of redox-relay chain walking and intermolecular nitrenoid transfer with the assistance of hydrogen bonding, thus representing the competence of Ir catalysis for the olefin migratory C-N coupling with high efficiency and exquisite selectivity.
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Affiliation(s)
- Yeongyu Hwang
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea.,Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Seung Beom Baek
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea.,Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Dongwook Kim
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea.,Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Sukbok Chang
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea.,Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
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11
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Shamna S, Fairoosa J, Afsina CMA, Anilkumar G. Palladium-catalysed hydrosilylation of unsaturated compounds. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2021.122236] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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12
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Zhang Q, Wang S, Zhang Q, Xiong T, Zhang Q. Radical Addition-Triggered Remote Migratory Isomerization of Unactivated Alkenes to Difluoromethylene-Containing Alkenes Enabled by Bimetallic Catalysis. ACS Catal 2021. [DOI: 10.1021/acscatal.1c05073] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Qiao Zhang
- Key Laboratory of Functional Organic Molecule Design & Synthesis of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Rd., Changchun, Jilin 130024, China
| | - Simin Wang
- Key Laboratory of Functional Organic Molecule Design & Synthesis of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Rd., Changchun, Jilin 130024, China
| | - Qian Zhang
- Key Laboratory of Functional Organic Molecule Design & Synthesis of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Rd., Changchun, Jilin 130024, China
| | - Tao Xiong
- Key Laboratory of Functional Organic Molecule Design & Synthesis of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Rd., Changchun, Jilin 130024, China
| | - Qian Zhang
- Key Laboratory of Functional Organic Molecule Design & Synthesis of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Rd., Changchun, Jilin 130024, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu, Shanghai 200032, China
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13
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Kanno S, Kakiuchi F, Kochi T. Palladium-Catalyzed Remote Diborylative Cyclization of Dienes with Diborons via Chain Walking. J Am Chem Soc 2021; 143:19275-19281. [PMID: 34695350 DOI: 10.1021/jacs.1c09705] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A novel method for catalytic remote bismetalation of alkene substrates by the addition of dimetal reagents is accomplished by using chain walking. In the presence of a palladium catalyst, the reaction of various 1,n-dienes and diborons were converted into cyclopentane derivatives with two boryl groups at remote positions via facile regioselective transformation of an unactivated sp3 C-H bond to a C-B bond. Sequential construction of three distant bonds, which is difficult to achieve by any method, was accomplished for the reactions of 1,n-dienes (n ≥ 7).
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Affiliation(s)
- Shota Kanno
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Fumitoshi Kakiuchi
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Takuya Kochi
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
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14
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Ghosh S, Patel S, Chatterjee I. Chain-walking reactions of transition metals for remote C-H bond functionalization of olefinic substrates. Chem Commun (Camb) 2021; 57:11110-11130. [PMID: 34611681 DOI: 10.1039/d1cc04370f] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Past several decades have witnessed the great evolution of inert C-H bond functionalization reactions as an emerging technique for synthesizing drug molecules, agrochemicals, and functional materials with intricate three-dimensional architectures. Although most activation of "unreactive" C-H bonds was accomplished by exploiting the power of transition metal catalysts, the distant and selective activation of unreactive C-H bonds in an undirected fashion remains one of the critical challenges to this rapidly growing field of organic chemistry. In this context, to meet all these concerns, much more attractive and challenging transition metal catalytic transformations have begun to blossom in recent years with the aid of the chain-walking process. The chain-walking strategy is one of the state-of-the-art techniques in organic synthesis to functionalize the unreactive C-H bonds by allowing the movement of a metal complex along the hydrocarbon chain of the substrate to recognize preferable bond-forming sites. The essential advantage of this strategy is that the bonds are formed only at the places where the catalyst selects for the specific C-H bonds to be cleaved, which not only avoids tedious synthetic procedures for prefunctionalization and the emission of undesirable wastes but also inspires chemists to plan novel synthetic strategies in a completely different manner. Consequently, various C-H bond functionalization reactions have been reported in recent years, employing the vast opportunity provided by this growing field mainly for the acyclic olefinic systems with flexible alkyl chains. Thus, chain-walking reactions allow the reactivity of the reaction centers within the substrates that cannot be realized via the classical mode of reactivity of the substrates. Applying this approach, inexpensive feedstock materials and simple hydrocarbons as an isomeric mixture can be converted to a single isomeric product in a regioconvergent scenario. Simultaneously, the site-selectivity of these reactions can also be switched using a regiodivergent strategy via appropriate tuning of ligands or a slight modification of reaction conditions. Herein, we have provided a comprehensive overview of the chain-walking reactions involving a variety of catalytic systems ranging from the first-row transition metal catalysts to the third-row transition metal catalysts for C-H activation in a concise fashion with the hope for further developments in this area through the appropriate application of the chain-walking reactions.
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Affiliation(s)
- Soumen Ghosh
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab-140001, India.
| | - Sandeep Patel
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab-140001, India.
| | - Indranil Chatterjee
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab-140001, India.
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15
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Li HL, Huang WS, Ling FY, Li L, Yan JH, Xu H, Xu LW. Highly Diastereoselective Hydrosilane-Assisted Rhodium-Catalyzed Spiro-Type Cycloisomerization of Succinimide and Pyrazolone-Based Functional 1,6-Dienes. Chem Asian J 2021; 16:1730-1734. [PMID: 33945231 DOI: 10.1002/asia.202100372] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/04/2021] [Indexed: 01/28/2023]
Abstract
Organosilicon compounds are important reagents and synthetic intermediates that play a key role in the construction of new materials and complex products. Here we show a highly diastereoselective rhodium-catalyzed cycloisomerization of 1,6-dienes, in which the use of (EtO)3 SiH accelerates the intramolecular cyclization reaction to afford a novel spiro-fused succinimide and pyrazolone derivatives in moderate to excellent yields as a single diastereoisomer. The proposed mechanism involves an active Rh-H species from the hydrosilane that is the H-donor in this spiro-type cycloisomerization reaction.
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Affiliation(s)
- Hui-Lin Li
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education and Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Wei-Sheng Huang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education and Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Fang-Ying Ling
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education and Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Li Li
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education and Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Jun-Hao Yan
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education and 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 Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Li-Wen Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education and Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P. R. China.,State Key Laboratory for Oxo Synthesis and Selective Oxidation Suzhou Research Institute (SRI), Lanzhou Institute of Chemical Physics (LICP), University of the Chinese Academy of Sciences (UCAS), Lanzhou, 730000, P. R. China
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16
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Guven S, Kundu G, Weßels A, Ward JS, Rissanen K, Schoenebeck F. Selective Synthesis of Z-Silyl Enol Ethers via Ni-Catalyzed Remote Functionalization of Ketones. J Am Chem Soc 2021; 143:8375-8380. [PMID: 34033717 PMCID: PMC8193638 DOI: 10.1021/jacs.1c01797] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
![]()
We report a remote
functionalization strategy, which allows the Z-selective
synthesis of silyl enol ethers of (hetero)aromatic
and aliphatic ketones via Ni-catalyzed chain walking from a distant
olefin site. The positional selectivity is controlled by the directionality
of the chain walk and is independent of thermodynamic preferences
of the resulting silyl enol ether. Our mechanistic data indicate that
a Ni(I) dimer is formed under these conditions, which serves
as a catalyst resting state and, upon reaction with an alkyl bromide,
is converted to [Ni(II)-H] as an active chain-walking/functionalization
catalyst, ultimately generating a stabilized η3-bound
Ni(II) enolate as the key selectivity-controlling intermediate.
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Affiliation(s)
- Sinem Guven
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Gourab Kundu
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Andrea Weßels
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Jas S Ward
- Department of Chemistry, University of Jyvaskyla, P.O. Box 35, 40114 Jyväskylä, Finland
| | - Kari Rissanen
- Department of Chemistry, University of Jyvaskyla, P.O. Box 35, 40114 Jyväskylä, Finland
| | - Franziska Schoenebeck
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
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17
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Taylor KS, Zhang C, Glukhov E, Gerwick WH, Suyama TL. Total Synthesis of Laucysteinamide A, a Monomeric Congener of Somocystinamide A. JOURNAL OF NATURAL PRODUCTS 2021; 84:865-870. [PMID: 33635664 DOI: 10.1021/acs.jnatprod.0c01317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Laucysteinamide A (4) is a marine natural product isolated from the cyanobacterium Caldora penicillata and contains structural motifs found in promising cancer drug leads. The first total synthesis of 4 and its analogues was achieved, which also enabled a concise formal synthesis of somocystinamide A (3), a dimeric congener of 4 that previously showed extremely potent antiproliferative activities. This work provides further insights on structure-activity relationships in this class of natural products.
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Affiliation(s)
- Kimberly S Taylor
- Department of Chemistry and Forensic Science, Waynesburg University, 51 W College Street, Waynesburg, Pennsylvania 15370, United States
| | - Chen Zhang
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography and Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, California 92093, United States
| | - Evgenia Glukhov
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography and Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, California 92093, United States
| | - William H Gerwick
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography and Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, California 92093, United States
| | - Takashi L Suyama
- Department of Chemistry and Forensic Science, Waynesburg University, 51 W College Street, Waynesburg, Pennsylvania 15370, United States
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18
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Guo C, Qiu Z, Xie Z. Catalytic Cage BH Functionalization of Carboranes via “Cage Walking” Strategy. ACS Catal 2021. [DOI: 10.1021/acscatal.0c05639] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Chenyang Guo
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, The Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of China
| | - Zaozao Qiu
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, The Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of China
| | - Zuowei Xie
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, The Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of China
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, People’s Republic of China
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19
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Bonfield HE, Valette D, Lindsay DM, Reid M. Stereoselective Remote Functionalization via Palladium-Catalyzed Redox-Relay Heck Methodologies. Chemistry 2021; 27:158-174. [PMID: 32744766 PMCID: PMC7821197 DOI: 10.1002/chem.202002849] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Indexed: 11/29/2022]
Abstract
Exploration of novel, three-dimensional chemical space is of growing interest in the drug discovery community and with this comes the challenge for synthetic chemists to devise new stereoselective methods to introduce chirality in a rapid and efficient manner. This Minireview provides a timely summary of the development of palladium-catalyzed asymmetric redox-relay Heck-type processes. These reactions represent an important class of transformation for the selective introduction of remote stereocenters, and have risen to prominence over the past decade. Within this Minireview, the vast scope of these transformations will be showcased, alongside applications to pharmaceutically relevant chiral building blocks and drug substances. To complement this overview, a mechanistic summary and discussion of the current limitations of the transformation are presented, followed by an outlook on future areas of investigation.
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Affiliation(s)
- Holly E. Bonfield
- Chemical DevelopmentGlaxoSmithKlineGunnels Wood RoadStevenageHertfordshireSG1 2NYUK
- Department of Pure and Applied Chemistry WestCHEMUniversity of Strathclyde295 Cathedral StreetGlasgowScotlandG1 1XLUK
| | - Damien Valette
- Chemical DevelopmentGlaxoSmithKlineGunnels Wood RoadStevenageHertfordshireSG1 2NYUK
| | - David M. Lindsay
- Department of Pure and Applied Chemistry WestCHEMUniversity of Strathclyde295 Cathedral StreetGlasgowScotlandG1 1XLUK
| | - Marc Reid
- Department of Pure and Applied Chemistry WestCHEMUniversity of Strathclyde295 Cathedral StreetGlasgowScotlandG1 1XLUK
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20
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Fiorito D, Scaringi S, Mazet C. Transition metal-catalyzed alkene isomerization as an enabling technology in tandem, sequential and domino processes. Chem Soc Rev 2021; 50:1391-1406. [DOI: 10.1039/d0cs00449a] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
One-pot reactions based on catalytic isomerization of alkenes not only offer the inherent advantages of atom-, step- and redox-economy but also enable the preparation of value-added products that would be difficult to access by conventional methods.
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Affiliation(s)
- Daniele Fiorito
- Organic Chemistry Department
- University of Geneva
- Geneva 1211
- Switzerland
| | - Simone Scaringi
- Organic Chemistry Department
- University of Geneva
- Geneva 1211
- Switzerland
| | - Clément Mazet
- Organic Chemistry Department
- University of Geneva
- Geneva 1211
- Switzerland
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21
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Komine N, Mitsui T, Kikuchi S, Hirano M. Ligand-Controlled Regiodivergent Hydrosilylation of Conjugated Dienes Catalyzed by Mono(phosphine)palladium(0) Complexes. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00597] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Nobuyuki Komine
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Tatsuo Mitsui
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Shu Kikuchi
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Masafumi Hirano
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
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22
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Guo X, Wu Y, Li G, Xia JB. Redox-Triggered Ruthenium-Catalyzed Remote C–H Acylation with Primary Alcohols. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03343] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xiao Guo
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), University of Chinese Academy of Sciences, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Flexible Electronic (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing 21181, China
| | - Yang Wu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), University of Chinese Academy of Sciences, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Gongqiang Li
- Key Laboratory of Flexible Electronic (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing 21181, China
| | - Ji-Bao Xia
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), University of Chinese Academy of Sciences, Chinese Academy of Sciences, Lanzhou 730000, China
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23
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Zhu C, Liu ZY, Tang L, Zhang H, Zhang YF, Walsh PJ, Feng C. Migratory functionalization of unactivated alkyl bromides for construction of all-carbon quaternary centers via transposed tert-C-radicals. Nat Commun 2020; 11:4860. [PMID: 32978381 PMCID: PMC7519689 DOI: 10.1038/s41467-020-18658-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 08/24/2020] [Indexed: 11/25/2022] Open
Abstract
Despite remarkable recent advances in transition-metal-catalyzed C(sp3)−C cross-coupling reactions, there remain challenging bond formations. One class of such reactions include the formation of tertiary-C(sp3)−C bonds, presumably due to unfavorable steric interactions and competing isomerizations of tertiary alkyl metal intermediates. Reported herein is a Ni-catalyzed migratory 3,3-difluoroallylation of unactivated alkyl bromides at remote tertiary centers. This approach enables the facile construction of otherwise difficult to prepare all-carbon quaternary centers. Key to the success of this transformation is an unusual remote functionalization via chain walking to the most sterically hindered tertiary C(sp3) center of the substrate. Preliminary mechanistic and radical trapping studies with primary alkyl bromides suggest a unique mode of tertiary C-radical generation through chain-walking followed by Ni–C bond homolysis. This strategy is complementary to the existing coupling protocols with tert-alkyl organometallic or -alkyl halide reagents, and it enables the expedient formation of quaternary centers from easily available starting materials. Formation of tertiary C(sp3)-C bonds is a formidable challenge due to steric interactions and low barriers for isomerization of intermediates. Here, the authors show a Ni-catalyzed migratory 3,3-difluoroallylation of unactivated alkyl bromides at remote tertiary carbon centers.
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Affiliation(s)
- Chuan Zhu
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, 211816, Nanjing, P. R. China
| | - Ze-Yao Liu
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, 211816, Nanjing, P. R. China
| | - Luning Tang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, 211816, Nanjing, P. R. China
| | - Heng Zhang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, 211816, Nanjing, P. R. China
| | - Yu-Feng Zhang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, 211816, Nanjing, P. R. China
| | - Patrick J Walsh
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA, 19104, USA.
| | - Chao Feng
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, 211816, Nanjing, P. R. China.
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24
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Yu R, Rajasekar S, Fang X. Enantioselective Nickel‐Catalyzed Migratory Hydrocyanation of Nonconjugated Dienes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008854] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Rongrong Yu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Shanmugam Rajasekar
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Xianjie Fang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
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25
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Yu R, Rajasekar S, Fang X. Enantioselective Nickel-Catalyzed Migratory Hydrocyanation of Nonconjugated Dienes. Angew Chem Int Ed Engl 2020; 59:21436-21441. [PMID: 32786048 DOI: 10.1002/anie.202008854] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 08/03/2020] [Indexed: 12/23/2022]
Abstract
Metal-catalyzed chain-walking reactions have recently emerged as a powerful strategy to functionalize remote positions in organic molecules. However, a chain-walking protocol for nonconjugated dienes remains scarcely reported, and developments are currently ongoing. In this Communication, a nickel-catalyzed asymmetric hydrocyanation of nonconjugated dienes involving a chain-walking process is demonstrated. The reaction exhibits excellent regio- and chemoselectivity, and a wide range of substrates were tolerated, delivering the products in high yields and enantioselectivities. Deuterium-labeling experiments support the chain-walking process, which involves an iterative β-H elimination and reinsertion processes. Gram-scale synthesis, regioconvergent experiments, and downstream transformations gave further insights into the high potential of this transformation.
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Affiliation(s)
- Rongrong Yu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Shanmugam Rajasekar
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Xianjie Fang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China
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26
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Yang C, Gao Y, Bai S, Jiang C, Qi X. Chemoselective Cross-Coupling of gem-Borazirconocene Alkanes with Aryl Halides. J Am Chem Soc 2020; 142:11506-11513. [PMID: 32496064 DOI: 10.1021/jacs.0c03821] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The direct and chemoselective conversion of the carbon-metal bond of gem-dimetallic reagents enables rapid and sequential formation of multiple carbon-carbon and carbon-heteroatom bonds, thus representing a powerful method for efficiently increasing structural complexity. Herein, we report a visible-light-induced, nickel-catalyzed, chemoselective cross-coupling reaction between gem-borazirconocene alkanes and diverse aryl halides, affording a wide range of alkyl Bpin derivatives in high yields with excellent regioselectivity. This practical method features attractively simple reaction conditions and a broad substrate scope. Additionally, we systematically investigated a Bpin-directed chain walking process underlying the regioselectivity of alkylzirconocenes, thus uncovering the mechanism of the remote functionalization of internal olefins achieved with our method. Finally, DFT calculations indicate that the high regioselectivity of this reaction originates from the directing effect of the Bpin group.
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Affiliation(s)
- Chao Yang
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China.,National Institute of Biological Sciences, 7 Science Park Road, Zhongguancun Life Science Park, Beijing 102206, China
| | - Yadong Gao
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China.,National Institute of Biological Sciences, 7 Science Park Road, Zhongguancun Life Science Park, Beijing 102206, China
| | - Songlin Bai
- National Institute of Biological Sciences, 7 Science Park Road, Zhongguancun Life Science Park, Beijing 102206, China
| | - Chao Jiang
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
| | - Xiangbing Qi
- National Institute of Biological Sciences, 7 Science Park Road, Zhongguancun Life Science Park, Beijing 102206, China.,Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing 100084, China
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27
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Ho GM, Segura L, Marek I. Ru-catalyzed isomerization of ω-alkenylboronates towards stereoselective synthesis of vinylboronates with subsequent in situ functionalization. Chem Sci 2020; 11:5944-5949. [PMID: 34094086 PMCID: PMC8159340 DOI: 10.1039/d0sc02542a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The stereoselective preparation of synthetically versatile vinylboronates from ω-alkenylboronates is achieved through a ruthenium-catalyzed isomerization reaction. A variety of di- and trisubstituted vinylboronates were conveniently produced and could be used as a new starting point for subsequent in situ remote functionalization through either a sequential Ru/Pd or Ru/Cu double catalytic system. A regio- and stereoselective ruthenium-catalyzed isomerization of ω-alkenyl boronates into stereodefined di- and trisubstituted alkenylboronate derivatives is reported.![]()
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Affiliation(s)
- Guo-Ming Ho
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology Technion City 3200009 Haifa Israel
| | - Lucas Segura
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology Technion City 3200009 Haifa Israel
| | - Ilan Marek
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology Technion City 3200009 Haifa Israel
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28
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Ge Y, Zhang J, Qiu Z, Xie Z. Pd‐Catalyzed Selective Bifunctionalization of 3‐Iodo‐
o
‐Carborane by Pd Migration. Angew Chem Int Ed Engl 2020; 59:4851-4855. [DOI: 10.1002/anie.201914500] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 11/23/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Yixiu Ge
- Shanghai-Hong Kong Joint Laboratory in Chemical SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Jie Zhang
- Department of Chemistry and State Key Laboratory of Synthetic ChemistryThe Chinese University of Hong Kong, Shatin, N. T. Hong Kong China
| | - Zaozao Qiu
- Shanghai-Hong Kong Joint Laboratory in Chemical SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
- CAS Key Laboratory of Energy Regulation MaterialsShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Rd Shanghai 200032 China
- Fujian Innovation AcademyChinese Academy of Sciences 155 Yangqiao Rd West Fuzhou 350002 China
| | - Zuowei Xie
- Shanghai-Hong Kong Joint Laboratory in Chemical SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
- Department of Chemistry and State Key Laboratory of Synthetic ChemistryThe Chinese University of Hong Kong, Shatin, N. T. Hong Kong China
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29
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Ge Y, Zhang J, Qiu Z, Xie Z. Pd‐Catalyzed Selective Bifunctionalization of 3‐Iodo‐
o
‐Carborane by Pd Migration. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914500] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yixiu Ge
- Shanghai-Hong Kong Joint Laboratory in Chemical SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Jie Zhang
- Department of Chemistry and State Key Laboratory of Synthetic ChemistryThe Chinese University of Hong Kong, Shatin, N. T. Hong Kong China
| | - Zaozao Qiu
- Shanghai-Hong Kong Joint Laboratory in Chemical SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
- CAS Key Laboratory of Energy Regulation MaterialsShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Rd Shanghai 200032 China
- Fujian Innovation AcademyChinese Academy of Sciences 155 Yangqiao Rd West Fuzhou 350002 China
| | - Zuowei Xie
- Shanghai-Hong Kong Joint Laboratory in Chemical SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
- Department of Chemistry and State Key Laboratory of Synthetic ChemistryThe Chinese University of Hong Kong, Shatin, N. T. Hong Kong China
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30
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Cui WC, Zhao W, Gao M, Liu W, Wang S, Liang Y, Yao ZJ. Diastereoselective Synthesis of Polysubstituted Piperidines through Visible-Light-Driven Silylative Cyclization of Aza-1,6-Dienes: Experimental and DFT Studies. Chemistry 2019; 25:16506-16510. [PMID: 31544271 DOI: 10.1002/chem.201903440] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/19/2019] [Indexed: 01/24/2023]
Abstract
A visible-light-driven radical silylative cyclization of aza-1,6-dienes featuring an acrylonitrile or acrylate moiety and an electron-neutral olefin was developed, which allows for stereoselective synthesis of densely functionalized piperidines in a highly atom-economical manner. Depending on the substitution pattern of the electron-neutral olefin, poor-to-excellent diastereoselectivity was observed. It was suggested that the 6-exo-trig cyclization was initiated by a chemoselective addition of silyl radical toward electron-deficient olefin and the geometry of the remaining olefin is closely associated with the cis-stereoselectivity. DFT calculations supported that a transition state with a cyano group locating at the axial position of the forming piperidine ring might be involved, in which either the increase of 1,3-diaxial repulsion or the lack of hydrogen bonding interaction will diminish diastereoselectivity.
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Affiliation(s)
- Wei-Chen Cui
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Wenxuan Zhao
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Ming Gao
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Wei Liu
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Shaozhong Wang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Yong Liang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Zhu-Jun Yao
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
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31
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