1
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Hafeez S, Sharma R, Jain S, Sihag N, Bhartiya H, Singh J, Reddy SR, Yadav MR. Pd-Catalyzed Cascade Heck/C(sp 3)-H Activation for Spirocyclopropyl Oxindoles. Org Lett 2024; 26:5069-5073. [PMID: 38847514 DOI: 10.1021/acs.orglett.4c01017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
We have demonstrated a Pd(0)-catalyzed Heck/C(sp3)-H activation cascade for the synthesis of spirocyclopropyl oxindoles in high yields from easily accessible ortho-bromoacrylamides. The formation of spirocyclopropyl oxindole is guided by an unconventional four-membered palladacycle through C(sp3)-H activation. The reaction exhibits a wide range of substrate scope and operates efficiently with a mere 0.5 mol % of Pd-catalyst. In addition, the use of microwave conditions facilitates rapid completion of the reaction. Furthermore, this spirocyclopropanation strategy can be coupled with [3 + 2] cycloaddition to produce spiropyrrolidine oxindoles, offering a valuable approach for the preparation of alkaloids such as (±)-horsfiline and (±)-coerulescine.
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Affiliation(s)
- Saleem Hafeez
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Ruchi Sharma
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Swati Jain
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Naveen Sihag
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Hemaang Bhartiya
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Jitendra Singh
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer, Rajasthan 305817, India
| | - S Rajagopala Reddy
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer, Rajasthan 305817, India
| | - M Ramu Yadav
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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2
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Li C, Wang Z, Jin M, Song Z. Palladium-Catalyzed Arylation of C(sp 2)-H Bonds and C(sp 3)-H Bonds with 4-Amino-benzotriazole as the Bidentate Directing Group. J Org Chem 2024; 89:6966-6973. [PMID: 38691095 DOI: 10.1021/acs.joc.4c00329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
The arylation of C(sp2)-H and C(sp3)-H bonds in carboxylic acids catalyzed by Pd(II) with 4-aminobentriazole as the directing group was investigated. In addition to activation of the C(sp2)-H bond, selective arylation of alkyl carboxylic acids and amino acids in the β position can also be achieved. This strategy involved a 5,5-bicyclic Pd intermediate complex whose structure was determined by X-ray single crystal diffraction analysis. Importantly, the DG (directing group) can be easily removed under mild conditions.
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Affiliation(s)
- Chengqian Li
- College of Chemistry, Jilin University, Jilin, Changchun 130012, P. R. China
| | - Zhuo Wang
- College of Chemistry, Jilin University, Jilin, Changchun 130012, P. R. China
| | - Meina Jin
- College of Chemistry, Jilin University, Jilin, Changchun 130012, P. R. China
| | - Zhiguang Song
- College of Chemistry, Jilin University, Jilin, Changchun 130012, P. R. China
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3
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Wang X, Zhong J, Luo M, Zeng X. Cr-Catalyzed Intramolecular Arylative Cross-Coupling of Unactivated C-H Bonds with C-Halide Bonds. Org Lett 2024; 26:4093-4097. [PMID: 38717255 DOI: 10.1021/acs.orglett.4c01145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
We report here a chromium-catalyzed intramolecular arylation of unactivated C-H bonds with C-halide bonds under mild conditions. This reaction was enabled by using a low-cost CrCl2 salt as the precatalyst in combination with allylmagnesium bromide and E/Z-mixed 1-halo-2-styrylarenes as substates, providing a strategy for the construction of functionalized phenanthrene compounds without using external ligands.
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Affiliation(s)
- Xuelan Wang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Jiaoyue Zhong
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Meiming Luo
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Xiaoming Zeng
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
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4
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Barman M, Mishra M, Mandal S, Punniyamurthy T. Palladium Catalysis Enabled Sequential C(sp 3)-H/C-C Activation: Access to Vinyl γ-Lactams. Org Lett 2024; 26:3722-3726. [PMID: 38678543 DOI: 10.1021/acs.orglett.4c00710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
A Pd(II)-catalyzed tandem reaction of aliphatic amides with vinylcyclopropanes (VCPs) was accomplished by merging C(sp3)-H and C-C activation. The reaction of VCP revealed alkenylation/cyclization, followed by ring opening via C-C cleavage, delivering vinyl γ-lactams with (E)-selectivity. The role of ligands, site-selectivity, functional group diversity, mechanistic insight, and synthetic utilities are important practical features.
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Affiliation(s)
- Madhab Barman
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India
| | - Manmath Mishra
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India
| | - Santu Mandal
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India
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5
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Zhang Z, Wei F, Wang X, Zhang Y. Pd(0)-Catalyzed Intermolecular Methylene C(sp 3)-H Silylation by Using N-Heterocyclic Carbene Ligands. Org Lett 2024; 26:3586-3590. [PMID: 38651729 DOI: 10.1021/acs.orglett.4c01044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
The direct functionalization of methylene C(sp3)-H bonds is one of the greatest challenges in transition metal-catalyzed C-H activation. Although Pd(0)-catalyzed intramolecular cyclization reactions of methylene C(sp3)-H bonds have been reported, intermolecular functionalization remains to be discovered. Herein, we report the first example of a Pd(0)-catalyzed intermolecular methylene C(sp3)-H functionalization reaction. By use of a N-heterocyclic carbene ligand, the methylene C(sp3)-H bonds of 1-(benzyloxy)-2-iodobenzenes are activated and disilylated with hexamethyldisilane, affording disilylated products.
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Affiliation(s)
- Zhengyang Zhang
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, Shanghai 200092, China
| | - Feng Wei
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, Shanghai 200092, China
| | - Xuan Wang
- Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Road, Shanghai 200444, China
| | - Yanghui Zhang
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, Shanghai 200092, China
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6
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Miyakoshi T, Kronenberg D, Tamaki S, Lombardi R, Baudoin O. Studies towards the Enantioselective Synthesis of Cryptowolinol via Pd 0-Catalyzed C(sp 3)-H Arylation/Parallel Kinetic Resolution. Org Lett 2024; 26:2923-2927. [PMID: 38567800 DOI: 10.1021/acs.orglett.4c00386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
We report a model study towards the enantioselective synthesis of the dibenzopyrrocoline alkaloid (-)-cryptowolinol. The key step involves a challenging enantioselective Pd0-catalyzed C(sp3)-H arylation performed with a chiral NHC ligand, which proceeds via parallel kinetic resolution (PKR). A very efficient PKR process was achieved on a deoxygenated model substrate and was successfully transposed to a potential intermediate en route to (-)-cryptowolinol.
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Affiliation(s)
- Takeru Miyakoshi
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Domenic Kronenberg
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Sota Tamaki
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Rafael Lombardi
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Olivier Baudoin
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
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7
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Staronova L, Yamazaki K, Xu X, Shi H, Bickelhaupt FM, Hamlin TA, Dixon DJ. Cobalt-Catalyzed Enantio- and Regioselective C(sp 3 )-H Alkenylation of Thioamides. Angew Chem Int Ed Engl 2024; 63:e202316021. [PMID: 38143241 DOI: 10.1002/anie.202316021] [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: 10/23/2023] [Revised: 12/19/2023] [Accepted: 12/20/2023] [Indexed: 12/26/2023]
Abstract
An enantioselective cobalt-catalyzed C(sp3 )-H alkenylation of thioamides with but-2-ynoate ester coupling partners employing thioamide directing groups is presented. The method is operationally simple and requires only mild reaction conditions, while providing alkenylated products as single regioisomers in excellent yields (up to 85 %) and high enantiomeric excess [up to 91 : 9 enantiomeric ratio (er), or up to >99 : 1 er after a single recrystallization]. Diverse downstream derivatizations of the products are demonstrated, delivering a range of enantioenriched constructs. Extensive computational studies using density functional theory provide insight into the detailed reaction mechanism, origin of enantiocontrol, and the unusual regioselectivity of the alkenylation reaction.
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Affiliation(s)
- Lucia Staronova
- Department of Chemistry, Chemistry Research Laboratory University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Ken Yamazaki
- Department of Chemistry, Chemistry Research Laboratory University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
- Department of Chemistry and Pharmaceutical Sciences, AIMMS, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands
| | - Xing Xu
- Department of Chemistry, Chemistry Research Laboratory University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Heyao Shi
- Department of Chemistry, Chemistry Research Laboratory University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - F Matthias Bickelhaupt
- Department of Chemistry and Pharmaceutical Sciences, AIMMS, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands
- Institute of Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
- Department of Chemical Sciences, University of Johannesburg, Auckland Park, Johannesburg, 2006, South Africa
| | - Trevor A Hamlin
- Department of Chemistry and Pharmaceutical Sciences, AIMMS, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands
| | - Darren J Dixon
- Department of Chemistry, Chemistry Research Laboratory University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
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8
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Yang XX, Wu MY, Wang SQ, Yang SD. Eight-Membered Palladacycle Intermediate Enabled Synthesis of Cyclic Biarylphosphonates. Chemistry 2024; 30:e202302416. [PMID: 37792811 DOI: 10.1002/chem.202302416] [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: 07/26/2023] [Revised: 09/20/2023] [Accepted: 10/02/2023] [Indexed: 10/06/2023]
Abstract
Transition-metal-catalyzed coupling reactions that involve the direct functionalization of insert C-H bond represent one of the most efficient strategies for forming carbon-carbon bonds. Herein, a palladium-catalyzed intramolecular C-H bond arylation of triaryl phosphates is reported to access seven-membered cyclic biarylphosphonate targets. The reaction is achieved via a unique eight-membered palladacyclic intermediate and shows good functional group compatibility. Meanwhile, the product can be readily converted into other valuable phosphate compounds.
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Affiliation(s)
- Xin-Xin Yang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Ming-Ying Wu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Shao-Qiu Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Shang-Dong Yang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, P. R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
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9
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Kudashev A, Vergura S, Zuccarello M, Bürgi T, Baudoin O. Methylene C(sp 3 )-H Arylation Enables the Stereoselective Synthesis and Structure Revision of Indidene Natural Products. Angew Chem Int Ed Engl 2024; 63:e202316103. [PMID: 37997293 DOI: 10.1002/anie.202316103] [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: 10/24/2023] [Revised: 11/20/2023] [Accepted: 11/23/2023] [Indexed: 11/25/2023]
Abstract
The divergent synthesis of two indane polyketides of the indidene family, namely (±)-indidene A (11 steps, 1.7 %) and (+)-indidene C (13 steps, 1.3 %), is reported. The synthesis of the trans-configured common indane intermediate was enabled by palladium(0)-catalyzed methylene C(sp3 )-H arylation, which was performed in both racemic and enantioselective (e.r. 99 : 1) modes. Further elaboration of this common intermediate by nickel-catalyzed dehydrogenative coupling allowed the rapid installation of the aroyl moiety of (±)-indidene A. In parallel, the biphenyl system of (±)- and (+)-indidene C was constructed by Suzuki-Miyaura coupling. These investigations led us to revise the structures of indidenes B and C.
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Affiliation(s)
- Anton Kudashev
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Stefania Vergura
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Marco Zuccarello
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Thomas Bürgi
- University of Geneva, Department of Physical Chemistry, 30 Quai Ernest-Ansermet, 1211, Geneva 4, Switzerland
| | - Olivier Baudoin
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
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10
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Li G, Shang Z, Li R, Xu X. DFT Study on the Mechanism of the Palladium-Catalyzed [3 + 2] Annulation of Aromatic Amides with Maleimides via Benzylic and meta-C-H Bond Activation: Role of the External Ligand Ac-Gly-OH. J Org Chem 2023. [PMID: 38153982 DOI: 10.1021/acs.joc.3c02375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
The mechanism of the Ac-Gly-OH-assisted palladium-catalyzed [3 + 2] annulation of aromatic amides with maleimides is investigated using density functional theory calculations. The results show that the reaction undergoes the sequential steps of N-H bond deprotonation, first benzylic C-H bond activation, maleimide insertion, second meta-C-H bond activation, reductive elimination, and oxidation. The external ligand Ac-Gly-OH acts as the internal base for hydrogen abstraction in the first benzylic C-H bond activation. The maleimide insertion step is found to be the rate-determining step. Based on the nearly same energetic span of the two pathways to generate the enantio products, the computational results are consistent with the experimental observation that the terminal [3 + 2] annulation products are racemic when using an achiral ligand. These calculation results disclose the detailed reaction mechanism and shed light on some experimental ambiguities.
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Affiliation(s)
- Guorong Li
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Zhenfeng Shang
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Ruifang Li
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Xiufang Xu
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
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11
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Wheatley M, Zuccarello M, Tsitopoulou M, Macgregor SA, Baudoin O. Effect of α-Substitution on the Reactivity of C(sp 3)-H Bonds in Pd 0-Catalyzed C-H Arylation. ACS Catal 2023; 13:12563-12570. [PMID: 37822862 PMCID: PMC10563019 DOI: 10.1021/acscatal.3c03806] [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: 08/14/2023] [Revised: 08/22/2023] [Indexed: 10/13/2023]
Abstract
We report mechanistic studies on the reactivity of different α-substituted C(sp3)-H bonds, -CHnR (R = H, Me, CO2Me, CONMe2, OMe, and Ph, as well as the cyclopropyl and isopropyl derivatives -CH(CH2)2 and -CHMe2) in the context of Pd0-catalyzed C(sp3)-H arylation. Primary kinetic isotope effects, kH/kD, were determined experimentally for R = H (3.2) and Me (3.5), and these, along with the determination of reaction orders and computational studies, indicate rate-limiting C-H activation for all substituents except when R = CO2Me. This last result was confirmed experimentally (kH/kD ∼ 1). A reactivity scale for C(sp3)-H activation was then determined: CH2CO2Me > CH(CH2)2 ≥ CH2CONMe2 > CH3 ≫ CH2Ph > CH2Me > CH2OMe ≫ CHMe2. C-H activation involves AMLA/CMD transition states featuring intramolecular O → H-C H-bonding assisted by C-H → Pd agostic bonding. The "AMLA coefficient", χ, is introduced to quantify the energies associated with these interactions via natural bond orbital 2nd order perturbation theory analysis. Higher barriers correlate with lower χ values, which in turn signal a greater agostic interaction in the transition state. We believe that this reactivity scale and the underlying factors that determine this will be of use for future studies in transition-metal-catalyzed C(sp3)-H activation proceeding via the AMLA/CMD mechanism.
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Affiliation(s)
- Matthew Wheatley
- Department
of Chemistry, University of Basel, 4056 Basel, Switzerland
| | - Marco Zuccarello
- Department
of Chemistry, University of Basel, 4056 Basel, Switzerland
| | - Maria Tsitopoulou
- Department
of Chemistry, University of Basel, 4056 Basel, Switzerland
| | - Stuart A. Macgregor
- Institute
of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K.
| | - Olivier Baudoin
- Department
of Chemistry, University of Basel, 4056 Basel, Switzerland
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12
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de Carvalho RL, Diogo EBT, Homölle SL, Dana S, da Silva Júnior EN, Ackermann L. The crucial role of silver(I)-salts as additives in C-H activation reactions: overall analysis of their versatility and applicability. Chem Soc Rev 2023; 52:6359-6378. [PMID: 37655711 PMCID: PMC10714919 DOI: 10.1039/d3cs00328k] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Indexed: 09/02/2023]
Abstract
Transition-metal catalyzed C-H activation reactions have been proven to be useful methodologies for the assembly of synthetically meaningful molecules. This approach bears intrinsic peculiarities that are important to be studied and comprehended in order to achieve its best performance. One example is the use of additives for the in situ generation of catalytically active species. This strategy varies according to the type of additive and the nature of the pre-catalyst that is being used. Thus, silver(I)-salts have proven to play an important role, due to the resulting high reactivity derived from the pre-catalysts of the main transition metals used so far. While being powerful and versatile, the use of silver-based additives can raise concerns, since superstoichiometric amounts of silver(I)-salts are typically required. Therefore, it is crucial to first understand the role of silver(I) salts as additives, in order to wisely overcome this barrier and shift towards silver-free systems.
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Affiliation(s)
- Renato L de Carvalho
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais-UFMG, 31270-901, Belo Horizonte, MG, Brazil.
| | - Emilay B T Diogo
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais-UFMG, 31270-901, Belo Horizonte, MG, Brazil.
| | - Simon L Homölle
- Institut für Organische und Biomolekulare Chemie and Wöhler Research Institute for Sustainable Chemistry, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077 Göttingen, Germany.
| | - Suman Dana
- Institut für Organische und Biomolekulare Chemie and Wöhler Research Institute for Sustainable Chemistry, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077 Göttingen, Germany.
| | - Eufrânio N da Silva Júnior
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais-UFMG, 31270-901, Belo Horizonte, MG, Brazil.
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie and Wöhler Research Institute for Sustainable Chemistry, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077 Göttingen, Germany.
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13
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Chen D, Li J, Zhang X, Liu G, Wang X, Liu Y, Liu X, Shan Y. Rapid Access to Fused Tetracyclic N-Heterocycles via Amino-to-Alkyl 1,5-Palladium Migration Coupled with Intramolecular C(sp 3)-C(sp 2) Coupling. Org Lett 2023; 25:6272-6277. [PMID: 37607048 DOI: 10.1021/acs.orglett.3c02034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
An unprecedented route for the preparation of fused tetracyclic N-heterocycles is presented through the palladium-catalyzed cyclization of isocyanides with alkyne-tethered aryl iodides. In this transformation, a novel amino-to-alkyl 1,5-palladium migration/intramolecular C(sp3)-C(sp2) coupling sequence was observed first. More importantly, isocyanide exhibited three roles, serving simultaneously as a C1 synthon, a C1N1 synthon, and the donor of C(sp3) for C(sp3)-C(sp2) coupling, and the reaction was the sole successful example that achieved C(sp3)-H activation of isocyanide.
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Affiliation(s)
- Dianpeng Chen
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Jianming Li
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Xiuhua Zhang
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Gongle Liu
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Xin Wang
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Yongwei Liu
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Xuan Liu
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Yingying Shan
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
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14
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Salameh N, Valentini F, Baudoin O, Vaccaro L. A General Enantioselective C-H Arylation Using an Immobilized Recoverable Palladium Catalyst. CHEMSUSCHEM 2023:e202300609. [PMID: 37486306 DOI: 10.1002/cssc.202300609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 07/11/2023] [Accepted: 07/24/2023] [Indexed: 07/25/2023]
Abstract
We herein report a general and efficient enantioselective C-H arylation of aryl bromides based on the use of BozPhos as the bisphosphine ligand and SP-NHC-PdII as recoverable heterogeneous catalyst. By exploiting the "release and catch" mechanism of action of the catalytic system, we used BozPhos as a broadly applicable chiral ligand, furnishing high enantioselectivities across all types of examined substrates containing methyl, cyclopropyl and aryl C-H bonds. For each reaction, the reaction scope was investigated, giving rise to 30 enantioenriched products, obtained with high yields and enantioselectivities, and minimal palladium leaching. The developed catalytic system provides a more sustainable solution compared to homogeneous systems for the synthesis of high added-value chiral products through recycling of the precious metal.
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Affiliation(s)
- Nihad Salameh
- Laboratory of Green SOC, Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Via Elce di Sotto, 8, 06124, Perugia, Italy
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056, Basel, Switzerland
| | - Federica Valentini
- Laboratory of Green SOC, Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Via Elce di Sotto, 8, 06124, Perugia, Italy
| | - Olivier Baudoin
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056, Basel, Switzerland
| | - Luigi Vaccaro
- Laboratory of Green SOC, Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Via Elce di Sotto, 8, 06124, Perugia, Italy
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15
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Peng P, Zhong Y, Zhou C, Tao Y, Li D, Lu Q. Unlocking the Nucleophilicity of Strong Alkyl C-H Bonds via Cu/Cr Catalysis. ACS CENTRAL SCIENCE 2023; 9:756-762. [PMID: 37122460 PMCID: PMC10141608 DOI: 10.1021/acscentsci.2c01389] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Indexed: 05/03/2023]
Abstract
Direct functionalization of inert C-H bonds is one of the most attractive yet challenging strategies for constructing molecules in organic chemistry. Herein, we disclose an unprecedented and Earth abundant Cu/Cr catalytic system in which unreactive alkyl C-H bonds are transformed into nucleophilic alkyl-Cr(III) species at room temperature, enabling carbonyl addition reactions with strong alkyl C-H bonds. Various aryl alkyl alcohols are furnished under mild reaction conditions even on a gram scale. Moreover, this new radical-to-polar crossover approach is further applied to the 1,1-difunctionalization of aldehydes with alkanes and different nucleophiles. Mechanistic investigations reveal that the aldehyde not only acts as a reactant but also serves as a photosensitizer to recycle the Cu and Cr catalysts.
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Affiliation(s)
- Pan Peng
- The
Institute for Advanced Studies (IAS), Wuhan
University, Wuhan 430072, P. R. China
| | - Yifan Zhong
- The
Institute for Advanced Studies (IAS), Wuhan
University, Wuhan 430072, P. R. China
| | - Cong Zhou
- The
Institute for Advanced Studies (IAS), Wuhan
University, Wuhan 430072, P. R. China
| | - Yongsheng Tao
- The
Institute for Advanced Studies (IAS), Wuhan
University, Wuhan 430072, P. R. China
| | - Dandan Li
- Key
Laboratory of Micro-Nano Materials for Energy Storage and Conversion
of Henan Province, Institute of Surface Micro and Nano Materials,
College of Chemical and Materials Engineering, Xuchang University, Henan 461000, P. R. China
| | - Qingquan Lu
- The
Institute for Advanced Studies (IAS), Wuhan
University, Wuhan 430072, P. R. China
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16
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Dattatri, Kumar Reddy Singam M, Vavilapalli S, Babu Nanubolu J, Sridhar Reddy M. Propargyl Alcohols as Bifunctional Reagents for Divergent Annulations of Biphenylamines via Dual C-H Functionalization/Dual Oxidative Cyclization. Angew Chem Int Ed Engl 2023; 62:e202215825. [PMID: 36583268 DOI: 10.1002/anie.202215825] [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: 10/27/2022] [Revised: 12/29/2022] [Accepted: 12/29/2022] [Indexed: 12/31/2022]
Abstract
The C-H functionalization strategy provides access to valuable molecules that previously required convoluted synthetic attempts. Dual C-H unsymmetrical functionalization, with a single bifunctional reagent, is an effective tactic. Propargyl alcohols (PAs), despite containing a reactive C≡C bond, have not been explored as building blocks via oxidative cleavage. Annulations via C-H activation are a versatile and synthetically attractive strategy. We disclose PA as a new bifunctional reagent for unsymmetrical dual C-H functionalization of biphenylamine for regioselectively annulated outcomes. On tuning the conditions, the annulation bifurcated towards an unusual dual oxidative cyclization. This method accommodates a wide range of PAs and showcases late-stage diversification of some natural products.
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Affiliation(s)
- Dattatri
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India.,Academy of Scientific and Innovative Research, Ghaziabad, 201002, India
| | - Maneesh Kumar Reddy Singam
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India.,Academy of Scientific and Innovative Research, Ghaziabad, 201002, India
| | - Suresh Vavilapalli
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India.,Academy of Scientific and Innovative Research, Ghaziabad, 201002, India
| | | | - Maddi Sridhar Reddy
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India.,Academy of Scientific and Innovative Research, Ghaziabad, 201002, India
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17
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Salameh N, Minio F, Rossini G, Marrocchi A, Vaccaro L. Waste-minimized C(sp3)-H activation for the preparation of fused N-heterocycles. GREEN SYNTHESIS AND CATALYSIS 2023. [DOI: 10.1016/j.gresc.2023.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023] Open
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18
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Zhang YZ, Xu MM, Si XG, Hou JL, Cai Q. Enantioselective Synthesis of Inherently Chiral Calix[4]arenes via Palladium-Catalyzed Asymmetric Intramolecular C–H Arylations. J Am Chem Soc 2022; 144:22858-22864. [DOI: 10.1021/jacs.2c10606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yu-Zhen Zhang
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Meng-Meng Xu
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Xu-Ge Si
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Jun-Li Hou
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Quan Cai
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
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19
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Zhang Y. Intermolecular Difunctionalization of C, C-Palladacycles Obtained by Pd(0)-Catalyzed C-H Activation. Acc Chem Res 2022; 55:3507-3518. [PMID: 36378838 DOI: 10.1021/acs.accounts.2c00627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
C,C-Palladacycles are an important class of organometallic compounds in which palladium is σ-bonded to two carbon atoms. They have three notable features that make them attractive in organic synthesis and organometallic chemistry: (1) C,C-Palladacycles are reactive intermediates that can be accessed via Pd(0)-catalyzed C-H activation of organic halides. Compared to Pd(II)-catalyzed heteroatom-directed C-H activation, C-H activation catalyzed by Pd(0) has some distinct advantages. In this type of catalytic reaction, the halo groups of readily available organic halides act as traceless directing groups. Furthermore, this strategy avoids the use of stoichiometric external oxidants. (2) C,C-Palladacycles have differentiated reactivities from common open-chain Pd(II) species. In particular, C,C-palladacycles have high reactivity toward electrophiles including alkyl halides. This unique reactivity can be utilized to develop novel reactions. (3) C,C-Palladacycles have two C-Pd bonds, providing a unique platform for developing novel reactions.Although a number of reactions of C,C-palladacycles had been developed prior to our work, the scope was largely limited to intramolecular cyclization reactions. Although Catellani reactions are intermolecular reactions of C,C-palladacycles, only one of the C-Pd bonds is functionalized. Our laboratory has sought to develop intermolecular difunctionalization reactions of C,C-palladacycles that exploit their unique reactivity and open new possibilities in organic synthesis. Aiming to develop synthetically useful reactions, we primarily focus on ring-forming reactions. In this Account, we summarize our laboratory's efforts to exploit intermolecular difunctionalization reactions of C,C-palladacycles that are obtained through Pd(0)-catalyzed C-H activation. We have developed a wide array of new reactions that represent facile and efficient methods for the synthesis of cyclic organic compounds, including functional materials and drug molecules. A range of C,C-palladacycles have been studied, including C(aryl),C(aryl)-palladacycles from 2-halobiaryls, C(aryl),C(alkyl)-palladacycles from ortho-iodo-tert-butylbenzenes or ortho-iodoanisole derivatives, and those obtained by cascade reactions. C,C-Palladacycles have been found to react with a variety of oxidants to furnish Pd(IV) intermediates, such as alkyl halides, aryl halides, diazo compounds, and N,N-di-tert-butyldiaziridinone, ultimately affording various cyclic structures, including 5-10-membered rings, carbo- and azacycles, spirocycles, and fused rings. Furthermore, novel reactivity of C,C-palladacycles has been discovered. For example, we found that C,C-palladacycles have unusually high reactivity toward disilanes, which can be leveraged to disilylate a variety of C,C-palladacycles with very high efficiency. These results should provide inspiration to develop other C-Si bond-forming reactions in the future. We hope that this Account will stimulate further research into the rich chemistry of C,C-palladacycles, in particular reactions that find practical applications in the synthesis of bioactive and functional molecules and those that advance the state of the art in C-H functionalization.
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Affiliation(s)
- Yanghui Zhang
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
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20
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Wang Y, Zhang F, Chen H, Li Y, Li J, Ye M. Enantioselective Nickel‐Catalyzed C(sp
3
)−H Activation of Formamides. Angew Chem Int Ed Engl 2022; 61:e202209625. [DOI: 10.1002/anie.202209625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Yin‐Xia Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry College of Chemistry Haihe Laboratory of Sustainable Chemical Transformations Nankai University Tianjin 300071 China
- Luoyang Institute of Science and Technology Luoyang, Henan Province 471023 China
| | - Feng‐Ping Zhang
- State Key Laboratory and Institute of Elemento-Organic Chemistry College of Chemistry Haihe Laboratory of Sustainable Chemical Transformations Nankai University Tianjin 300071 China
| | - Hao Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry College of Chemistry Haihe Laboratory of Sustainable Chemical Transformations Nankai University Tianjin 300071 China
| | - Yue Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry College of Chemistry Haihe Laboratory of Sustainable Chemical Transformations Nankai University Tianjin 300071 China
| | - Jiang‐Fei Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry College of Chemistry Haihe Laboratory of Sustainable Chemical Transformations Nankai University Tianjin 300071 China
| | - Mengchun Ye
- State Key Laboratory and Institute of Elemento-Organic Chemistry College of Chemistry Haihe Laboratory of Sustainable Chemical Transformations Nankai University Tianjin 300071 China
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21
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Liu J, Hao T, Qian L, Shi M, Wei Y. Construction of Benzocyclobutenes Enabled by Visible‐Light‐Induced Triplet Biradical Atom Transfer of Olefins. Angew Chem Int Ed Engl 2022; 61:e202204515. [DOI: 10.1002/anie.202204515] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Indexed: 11/12/2022]
Affiliation(s)
- Jiaxin Liu
- State Key Laboratory of Organometallic Chemistry University of Chinese Academy of Sciences Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
- CAS Key Laboratory of Energy Regulation Materials Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Tonggang Hao
- State Key Laboratory of Organometallic Chemistry University of Chinese Academy of Sciences Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Ling Qian
- Key Laboratory for Advanced Materials & Institute of Fine Chemicals Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center School of Chemistry & Molecular Engineering East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Min Shi
- State Key Laboratory of Organometallic Chemistry University of Chinese Academy of Sciences Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
- Key Laboratory for Advanced Materials & Institute of Fine Chemicals Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center School of Chemistry & Molecular Engineering East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry University of Chinese Academy of Sciences Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
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22
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Wang YX, Zhang FP, Chen H, Li Y, Li JF, Ye M. Enantioselective Nickel‐Catalyzed C(sp3)−H Activation of Formamides. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Yin-Xia Wang
- Luoyang Institute of Science and Technology chemistry CHINA
| | | | - Hao Chen
- Nankai University chemistry CHINA
| | - Yue Li
- Nankai University chemistry CHINA
| | | | - Mengchun Ye
- nankai university chemistry 94 Weijin Rd, Lihua Bldg 310 300071 Tianjin CHINA
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23
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Ganguly S, Bhakta S, Ghosh T. Gold‐Catalyzed Synthesis of Spirocycles: Recent Advances. ChemistrySelect 2022. [DOI: 10.1002/slct.202201407] [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)
- Somnath Ganguly
- Department of Applied Chemistry Maulana Abul Kalam Azad University of Technology Simhat, Haringhata 741249, Nadia West Bengal India
| | - Sayantika Bhakta
- Department of Applied Chemistry Maulana Abul Kalam Azad University of Technology Simhat, Haringhata 741249, Nadia West Bengal India
| | - Tapas Ghosh
- Department of Applied Chemistry Maulana Abul Kalam Azad University of Technology Simhat, Haringhata 741249, Nadia West Bengal India
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24
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Liu J, Hao T, Qian L, Shi M, Wei Y. Construction of Benzocyclobutenes Enabled by Visible‐Light‐Induced Triplet Biradical Atom Transfer of Olefins. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jiaxin Liu
- Shanghai Institute of Organic Chemistry State Key Laboratory of Organometallic Chemistry Shanghai CHINA
| | - Tonggang Hao
- Shanghai Institute of Organic Chemistry State Key Laboratory of Organometallic Chemistry Shanghai CHINA
| | - Ling Qian
- East China University of Science and Technology School of Chemistry & Molecular Engineering Shanghai CHINA
| | - Min Shi
- Shanghai Institute of Organic Chemistry State Key Laboratory of Organometallic Chemistry Shanghai CHINA
| | - Yin Wei
- Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences State Key Laboratory of Organometallic Chemistry 345 Lingling Road 200032 Shanghai CHINA
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25
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Saint-Jacques K, Ladd CL, Charette AB. Access to hexahydroazepinone heterocycles via palladium-catalysed C(sp 3)-H alkenylation/ring-opening of cyclopropanes. Chem Commun (Camb) 2022; 58:7550-7553. [PMID: 35707937 DOI: 10.1039/d2cc01917e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this communication, we describe the synthesis of novel hexahydroazepinone derivatives starting from two simple building blocks in presence of a readily available palladium catalyst. The reaction proceeds through a selective C(sp3)-H alkenylation/ring-opening process to obtain the seven-membered ring products in good to excellent yields on a wide variety of substrates under batch, microwave, and continuous flow conditions.
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Affiliation(s)
- Kévin Saint-Jacques
- Centre in Green Chemistry and Catalysis, Centre for Continuous Flow Synthesis, Department of Chemistry, Université de Montréal, 1375, av. Thérèse Lavoie-Roux, Montréal, Québec H2V 0B3, Canada.
| | - Carolyn L Ladd
- Centre in Green Chemistry and Catalysis, Centre for Continuous Flow Synthesis, Department of Chemistry, Université de Montréal, 1375, av. Thérèse Lavoie-Roux, Montréal, Québec H2V 0B3, Canada.
| | - André B Charette
- Centre in Green Chemistry and Catalysis, Centre for Continuous Flow Synthesis, Department of Chemistry, Université de Montréal, 1375, av. Thérèse Lavoie-Roux, Montréal, Québec H2V 0B3, Canada.
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26
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Mishra DR, Panda BS, Nayak S, Panda J, Mohapatra S. Recent Advances in the Synthesis of 5‐Membered
N
‐Heterocycles via Rhodium Catalysed Cascade Reactions. ChemistrySelect 2022. [DOI: 10.1002/slct.202200531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Deepak R. Mishra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Bhabani S. Panda
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Sabita Nayak
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Jasmine Panda
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Seetaram Mohapatra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
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27
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Optical and electrochemical properties of novel fused tricyclic thiophene–15-crown-5 systems and their complexes with Mg and Ba ions. MENDELEEV COMMUNICATIONS 2022. [DOI: 10.1016/j.mencom.2022.05.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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28
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Miyakoshi T, Niggli NE, Baudoin O. Remote Construction of N-Heterocycles via 1,4-Palladium Shift-Mediated Double C-H Activation. Angew Chem Int Ed Engl 2022; 61:e202116101. [PMID: 35143094 PMCID: PMC9303548 DOI: 10.1002/anie.202116101] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Indexed: 12/14/2022]
Abstract
In the past years, Pd0‐catalyzed C(sp3)−H activation provided efficient and step‐economical methods to synthesize carbo‐ and heterocycles via direct C(sp2)−C(sp3) bond formation. We report herein that a 1,4‐Pd shift allows access to N‐heterocycles which are difficult to build via a direct reaction. It is shown that o‐bromo‐N‐methylanilines undergo a 1,4‐Pd shift at the N‐methyl group, followed by intramolecular trapping by C(sp2)−H or C(sp3)−H activation at another nitrogen substituent and remote C−C bond formation to generate biologically relevant isoindolines and β‐lactams. The product selectivity is influenced by the employed ligand, with NHCs favoring the product of remote C−C coupling against products arising from direct C−C coupling and N‐demethylation.
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Affiliation(s)
- Takeru Miyakoshi
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Nadja E Niggli
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Olivier Baudoin
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
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29
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Thombal RS, Rubio PYM, Lee D, Maiti D, Lee YR. Modern Palladium-Catalyzed Transformations Involving C–H Activation and Subsequent Annulation. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00813] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Raju S. Thombal
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Peter Yuosef M. Rubio
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Daesung Lee
- Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | | | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
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30
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Qi H, Chi D, Chen S. Pd-Catalyzed C-H Functionalization of Indole-Containing Alkene-Tethered Aryl Halides with Alkynes To Construct Indole Alkaloid Scaffolds. Org Lett 2022; 24:2910-2914. [PMID: 35394792 DOI: 10.1021/acs.orglett.2c00882] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A convenient and straightforward approach for the construction of indole alkaloid scaffolds from indole-containing alkene-tethered aryl halides and alkynes through a sequential C-H activation, five-membered palladacycle formation, and alkyne insertion process has been described. The approach provides a series of indole alkaloid compounds in moderate to excellent yields with good functional tolerance.
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Affiliation(s)
- Hongbo Qi
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, Department of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
| | - Dongmei Chi
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, Department of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
| | - Shufeng Chen
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, Department of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
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31
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Ferlin F, Anastasiou I, Salameh N, Miyakoshi T, Baudoin O, Vaccaro L. C(sp 3 )-H Arylation Promoted by a Heterogeneous Palladium-N-Heterocyclic Carbene Complex in Batch and Continuous Flow. CHEMSUSCHEM 2022; 15:e202102736. [PMID: 35098689 PMCID: PMC9303704 DOI: 10.1002/cssc.202102736] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/24/2022] [Indexed: 06/14/2023]
Abstract
A heterogeneous reusable palladium(II)-bis(N-heterocyclic carbene) catalyst was prepared and shown to catalyze the intramolecular C(sp3 )-H activation/cyclization of N-alkyl-2-bromoanilines furnishing indolines. This new catalytic system was based on a bis-imidazolium ligand immobilized on a spaced cross-linked polystyrene support. The iodide ligands on the catalyst played a central role in the efficiency of the process occurring through a "release and catch" mechanism. The heterogeneous nature of the catalyst was further exploited in the design of a continuous-flow protocol that allowed a more efficient recovery and reuse of the catalyst, as well as a very fast and safe procedure.
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Affiliation(s)
- Francesco Ferlin
- Laboratory of Green SOCDipartimento di ChimicaBiologia e BiotecnologieUniversità degli Studi di PerugiaVia Elce di Sotto, 806124PerugiaItaly
| | - Ioannis Anastasiou
- Laboratory of Green SOCDipartimento di ChimicaBiologia e BiotecnologieUniversità degli Studi di PerugiaVia Elce di Sotto, 806124PerugiaItaly
| | - Nihad Salameh
- Laboratory of Green SOCDipartimento di ChimicaBiologia e BiotecnologieUniversità degli Studi di PerugiaVia Elce di Sotto, 806124PerugiaItaly
| | - Takeru Miyakoshi
- Department of ChemistryUniversity of BaselSt. Johanns-Ring 19CH-4056BaselSwitzerland
| | - Olivier Baudoin
- Department of ChemistryUniversity of BaselSt. Johanns-Ring 19CH-4056BaselSwitzerland
| | - Luigi Vaccaro
- Laboratory of Green SOCDipartimento di ChimicaBiologia e BiotecnologieUniversità degli Studi di PerugiaVia Elce di Sotto, 806124PerugiaItaly
- Peoples Friendship University of Russia (RUDN University)6 Miklukho-Maklaya StMoscow117198Russia
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32
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Ali S, Rani A, Khan S. Manganese-Catalyzed C-H Functionalizations Driven via Weak Coordination: Recent Developments and Perspectives. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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33
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Babu SA, Aggarwal Y, Patel P, Tomar R. Diastereoselective palladium-catalyzed functionalization of prochiral C(sp 3)-H bonds of aliphatic and alicyclic compounds. Chem Commun (Camb) 2022; 58:2612-2633. [PMID: 35113087 DOI: 10.1039/d1cc05649b] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We highlight the reported developments of the palladium-catalyzed C-H activation and functionalization of the inactive/unreactive prochiral C(sp3)-H bonds of aliphatic and alicyclic compounds. There exist numerous classical methods for generating contiguous stereogenic centers in a compound with a high degree of stereocontrol. Along similar lines, the Pd(II)-catalyzed, directing group-aided functionalization of inactive prochiral/diastereotopic C(sp3)-H bonds have been exploited to accomplish the stereoselective construction of stereo-arrays in organic compounds. We present a concise discussion on how specific strategies consisting of Pd(II)-catalyzed, directing group-aided C(sp3)-H functionalization have been utilized to generate two or more stereogenic centers in aliphatic and alicyclic compounds.
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Affiliation(s)
- Srinivasarao Arulananda Babu
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
| | - Yashika Aggarwal
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
| | - Pooja Patel
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
| | - Radha Tomar
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
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34
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Zeng J, Torigoe T, Kuninobu Y. Control of Site-Selectivity in Hydrogen Atom Transfer by Electrostatic Interaction: Proximal-Selective C(sp3)–H Alkylation of 2-Methylanilinium Salts Using a Decatungstate Photocatalyst. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00278] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Jialin Zeng
- Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan
| | - Takeru Torigoe
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan
- Department of Interdisciplinary Engineering Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan
| | - Yoichiro Kuninobu
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan
- Department of Interdisciplinary Engineering Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan
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35
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Miyakoshi T, Niggli NE, Baudoin O. Remote Construction of N‐Heterocycles via 1,4‐Palladium Shift‐Mediated Double C–H Activation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116101] [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)
- Takeru Miyakoshi
- Universität Basel: Universitat Basel Departement Chemie SWITZERLAND
| | | | - Olivier Baudoin
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel SWITZERLAND
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36
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Font M, Gulías M, Mascareñas JL. Transition‐Metal‐Catalyzed Annulations Involving the Activation of C(sp
3
)−H Bonds. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112848] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Marc Font
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Moisés Gulías
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - José Luis Mascareñas
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
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37
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Tomar R, Bhattacharya D, Arulananda Babu S. Direct lactamization of β‐arylated δ‐aminopentanoic acid carboxamides: En route to 4‐aryl‐ 2‐piperidones, piperidines, antituberculosis molecule Q203 (Telacebec) and its analogues. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100736] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Radha Tomar
- Indian Institute of Science Education and Research Mohali Chemical Sciences INDIA
| | | | - Srinivasarao Arulananda Babu
- Indian Institute of Science Education and Research Mohali Department of Chemical Sciences Knowledge City, Sector 81, SAS Nagar,Mohali, Manauli P.O., 140306 Mohali INDIA
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38
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Chen P, Wang ZY, Wang JX, Peng XS, Wong HNC. Remote C(sp 3)–H activation: palladium-catalyzed intermolecular arylation and alkynylation with organolithiums and terminal alkynes. Org Chem Front 2022. [DOI: 10.1039/d2qo00584k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A 1,4-palladium shift is regarded as one of the solutions towards the challenging remote C(sp3)–H activation.
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Affiliation(s)
- Peng Chen
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Zhi-Yong Wang
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Jia-Xin Wang
- School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen), Longgang District, Shenzhen, China
| | - Xiao-Shui Peng
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
- School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen), Longgang District, Shenzhen, China
| | - Henry N. C. Wong
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
- School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen), Longgang District, Shenzhen, China
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39
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Liu J, Xiao X, Lai Y, Zhang Z. Recent advances in transition metal-catalyzed heteroannulative difunctionalization of alkenes via C-H activation for the synthesis of heterocycles. Org Chem Front 2022. [DOI: 10.1039/d2qo00081d] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heterocyclic compounds are the fundamental structural motifs distributed in natural products, pharmaceuticals and biologically active compounds. Thus, there is increasing interest in the development of novel synthetic strategies for the...
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40
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Wei WX, Kong X, Jiao RQ, Li XS, Wang CT, Li Y, Liang YM. Regioselective Synthesis of Spirocyclic Pyrrolines via a Palladium-Catalyzed Narasaka-Heck/C-H Activation/[4+2] Annulation Cascade Reaction. Chem Sci 2022; 13:6348-6354. [PMID: 35733897 PMCID: PMC9159093 DOI: 10.1039/d2sc01887j] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 05/05/2022] [Indexed: 11/21/2022] Open
Abstract
A novel palladium-catalyzed spirocyclization through sequential Narasaka-Heck, C-H activation and [4+2] annulation has been developed. In this reaction, cheap and readily available 2-chlorobenzoic acid or ethyl phenylpropiolate was employed as...
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Affiliation(s)
- Wan-Xu Wei
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University Lanzhou 730000 P. R. China
| | - Xiangtao Kong
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University Anyang 455000 P. R. China
| | - Rui-Qiang Jiao
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University Lanzhou 730000 P. R. China
| | - Xue-Song Li
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University Lanzhou 730000 P. R. China
| | - Cui-Tian Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University Lanzhou 730000 P. R. China
| | - Yuke Li
- Department of Chemistry, Centre for Scientific Modeling and Computation, Chinese University of Hong Kong Shatin Hong Kong P. R. China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University Lanzhou 730000 P. R. China
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41
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Prajapati R, Gola AK, Kumar A, Jaiswal S, Tadigoppula N. o-Acetoxylation of oxo-benzoxazines via C–H activation by palladium( ii)/aluminium oxide. NEW J CHEM 2022. [DOI: 10.1039/d2nj00134a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Direct activation of sp2 C–H bonds by a palladium catalyst has received significant attention in organic chemistry.
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Affiliation(s)
- Ramanand Prajapati
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, 226031, U.P., India
| | - Ajay Kant Gola
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, 226031, U.P., India
| | - Amrendra Kumar
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, 226031, U.P., India
| | - Shubham Jaiswal
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, 226031, U.P., India
| | - Narender Tadigoppula
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, 226031, U.P., India
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42
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43
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Zuo X, Cheng C, Zhang Y. Palladium-catalyzed cross-coupling of 2-iodobiphenyls with ortho-chloroacetophenones through dual C–H arylation for the construction of tribenzo[ a, c, f]cyclooctanones. Org Chem Front 2022. [DOI: 10.1039/d2qo00647b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Pd-catalyzed cross-coupling reaction of 2-iodobiphenyls with ortho-chloroacetophenones has been developed through C–H activation. The reaction provides a straightforward method for the construction of tribenzo[a,c,f]cyclooctanones.
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Affiliation(s)
- Xiang Zuo
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Cang Cheng
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Yanghui Zhang
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
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44
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Chen C, Huang Y, Ding J, Liu L, Zhu B. Palladium‐Catalyzed Carbamoyl‐Carbamoylation/ Carboxylation/Thioesterification of Alkene‐Tethered Carbamoyl Chlorides Using Mo(CO)
6
as the Carbonyl Source. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202101130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Chen Chen
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 People's Republic of China
| | - Yujie Huang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 People's Republic of China
| | - Jie Ding
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 People's Republic of China
| | - Liying Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 People's Republic of China
| | - Bolin Zhu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 People's Republic of China
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45
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Kudashev A, Baudoin O. Site-Selective Pd-Catalyzed C(sp 3 )-H Arylation of Heteroaromatic Ketones. Chemistry 2021; 27:17688-17694. [PMID: 34761844 PMCID: PMC9299137 DOI: 10.1002/chem.202103467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Indexed: 11/27/2022]
Abstract
A ligand‐controlled site‐selective C(sp3)−H arylation of heteroaromatic ketones has been developed using Pd catalysis. The reaction occurred selectively at the α‐ or β‐position of the ketone side‐chain. The switch from α‐ to β‐arylation was realized by addition of a pyridone ligand. The α‐arylation process showed broad scope and high site‐ and chemoselectivity, whereas the β‐arylation was more limited. Mechanistic investigations suggested that α‐arylation occurs through C−H activation/oxidative addition/reductive elimination whereas β‐arylation involves desaturation and aryl insertion.
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Affiliation(s)
- Anton Kudashev
- Department of ChemistryUniversity of BaselSt. Johanns-Ring 19CH-4056BaselSwitzerland
| | - Olivier Baudoin
- Department of ChemistryUniversity of BaselSt. Johanns-Ring 19CH-4056BaselSwitzerland
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46
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Pan S, Sarkar S, Ghosh B, Samanta R. Transition metal catalysed direct construction of 2-pyridone scaffolds through C-H bond functionalizations. Org Biomol Chem 2021; 19:10516-10529. [PMID: 34816862 DOI: 10.1039/d1ob01856f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Substituted 2-pyridone is one of the most frequent scaffolds among nitrogen-containing bioactive natural products, pharmaceuticals and organic materials. Besides the classical syntheses to construct this class of molecules, retrosynthetically more straightforward approaches based on transition metal catalysed C-H bond functionalizations have been explored recently. In this review, we have summarized the recent progress in the direct transition metal catalysed construction of substituted 2-pyridone scaffolds via site-selective C-H bond functionalizations.
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Affiliation(s)
- Subarna Pan
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
| | - Souradip Sarkar
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
| | - Bidhan Ghosh
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
| | - Rajarshi Samanta
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
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47
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Talbot FJT, Zhang S, Satpathi B, Howell GP, Perry GJP, Crisenza GEM, Procter DJ. Modular Synthesis of Stereodefined Benzocyclobutene Derivatives via Sequential Cu- and Pd-Catalysis. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04496] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Fabien J. T. Talbot
- Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Shibo Zhang
- Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Bishnupada Satpathi
- Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Gareth P. Howell
- Chemical Development, Pharmaceutical Technology and Development, Operations, AstraZeneca, Silk Road Business Park, Macclesfield SK10 2NA, U.K
| | - Gregory J. P. Perry
- Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | | | - David J. Procter
- Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
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48
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Sahoo SR, Dutta S, Al-Thabaiti SA, Mokhtar M, Maiti D. Transition metal catalyzed C-H bond activation by exo-metallacycle intermediates. Chem Commun (Camb) 2021; 57:11885-11903. [PMID: 34693418 DOI: 10.1039/d1cc05042g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
exo-Metallacycles have become the key reaction intermediates in activating various remote C(sp2)-H and C(sp3)-H bonds in the past decade and aided in achieving unusual site-selectivity. Various novel exo-chelating auxiliaries have assisted metals to reach desired remote C-H bonds of different alcohol and amine-derived substrates. As a result, a wide range of organic transformations of C-H bonds like halogenation, acetoxylation, amidation, sulfonylation, olefination, acylation, arylation, etc. were accessible using the exo-metallacycle strategy. In this review, we have summarized the developments in C-H bond activation via four-, five-, six-, seven- and eight-membered exo-metallacycles and the key reaction intermediates, including the mechanistic aspects, are discussed concisely.
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Affiliation(s)
- Sumeet Ranjan Sahoo
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai-400076, India.
| | - Subhabrata Dutta
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai-400076, India.
| | - Shaeel A Al-Thabaiti
- Chemistry Department, Faculty of Science King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mohamed Mokhtar
- Chemistry Department, Faculty of Science King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai-400076, India.
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49
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Font M, Gulías M, Mascareñas JL. Transition-Metal-Catalyzed Annulations Involving the Activation of C(sp 3 )-H Bonds. Angew Chem Int Ed Engl 2021; 61:e202112848. [PMID: 34699657 PMCID: PMC9300013 DOI: 10.1002/anie.202112848] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Indexed: 12/15/2022]
Abstract
The selective functionalization of C(sp3)−H bonds using transition‐metal catalysis is among the more attractive transformations of modern synthetic chemistry. In addition to its inherent atom economy, such reactions open unconventional retrosynthetic pathways that can streamline synthetic processes. However, the activation of intrinsically inert C(sp3)−H bonds, and the selection among very similar C−H bonds, represent highly challenging goals. In recent years there has been notable progress tackling these issues, especially with regard to the development of intermolecular reactions entailing the formation of C−C and C−heteroatom bonds. Conversely, the assembly of cyclic products from simple acyclic precursors using metal‐catalyzed C(sp3)−H bond activations has been less explored. Only recently has the number of reports on such annulations started to grow. Herein we give an overview of some of the more relevant advances in this exciting topic.
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Affiliation(s)
- Marc Font
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS)Departamento de Química OrgánicaUniversidade de Santiago de Compostela15782Santiago de CompostelaSpain
| | - Moisés Gulías
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS)Departamento de Química OrgánicaUniversidade de Santiago de Compostela15782Santiago de CompostelaSpain
| | - José Luis Mascareñas
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS)Departamento de Química OrgánicaUniversidade de Santiago de Compostela15782Santiago de CompostelaSpain
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50
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Yang S, Zhang Y. Synthesis of 9-Fluorenylidenes via Pd-Catalyzed C-H Vinylation with Vinyl Bromides. Org Lett 2021; 23:7746-7750. [PMID: 34559537 DOI: 10.1021/acs.orglett.1c02722] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A facile and efficient approach for the synthesis of 9-fluorenylidenes has been developed via the palladium-catalyzed cross-coupling of 2-iodobiphenyls and vinyl bromides. The reaction involves the C-H activation of 2-iodobiphenyls and dual C-C bond formations. A range of 9-fluorenylidene derivatives, including diphenyldibenzofulvenes, can be synthesized with the reaction.
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Affiliation(s)
- Shuai Yang
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University 1239 Siping Road, Shanghai 200092, China
| | - Yanghui Zhang
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University 1239 Siping Road, Shanghai 200092, China
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