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Gasparetto M, Fődi B, Sipos G. Negishi-coupling-enabled synthesis of α-heteroaryl-α-amino acid building blocks for DNA-encoded chemical library applications. Beilstein J Org Chem 2024; 20:1922-1932. [PMID: 39135657 PMCID: PMC11318629 DOI: 10.3762/bjoc.20.168] [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: 05/30/2024] [Accepted: 07/26/2024] [Indexed: 08/15/2024] Open
Abstract
Amino acids are vital motifs in the domain of biochemistry, serving as the foundational unit for peptides and proteins, while also holding a crucial function in many biological processes. Due to their bifunctional character, they have been also used for combinatorial chemistry purposes, such as the preparation of DNA-encoded chemical libraries. We developed a practical synthesis for α-heteroaryl-α-amino acids starting from an array of small heteroaromatic halides. The reaction sequence utilizes a photochemically enhanced Negishi cross-coupling as a key step, followed by oximation and reduction. The prepared amino esters were validated for on-DNA reactivity via a reverse amidation-hydrolysis-reverse amidation protocol.
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Affiliation(s)
- Matteo Gasparetto
- X-Chem Zrt., Záhony u. 7, DA Building, Graphisoft Park, Budapest, 1031, Hungary
| | - Balázs Fődi
- X-Chem Zrt., Záhony u. 7, DA Building, Graphisoft Park, Budapest, 1031, Hungary
| | - Gellért Sipos
- X-Chem Zrt., Záhony u. 7, DA Building, Graphisoft Park, Budapest, 1031, Hungary
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2
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Wei B, Chen YH, Knochel P. Recent Advances in Halogen-Metal Exchange Reactions. Acc Chem Res 2024; 57:1951-1963. [PMID: 38953535 DOI: 10.1021/acs.accounts.4c00242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
ConspectusThe halogen-metal exchange reaction is a very powerful method for preparing functionalized organometallic reagents in the fields of organic and organometallic chemistry. Since its inception, significant interest has been directed toward the on-demand development of new halogen-metal exchange reactions, primarily through the upgrading of exchange reagents. The enduring quest for optimal reactivity, superior functional group compatibility, and innovative synthetic applications of exchange reagents remains a fundamental objective. In the past several years, the emergence of some significant discoveries in halogen-metal exchange reactions has proclaimed a renaissance to this field. This Account outlines the latest advances within the domain contributed by the Knochel group, including the main points as follows.The stereoretentive I/Li exchange on stereodefined secondary alkyl iodides was developed for the synthesis of nonstabilized chiral secondary alkyllithium reagents. This provided a straightforward method to access chiral organolithium reagents, which can be trapped by various electrophiles or transmetalated with other metals such as copper, zinc, and magnesium, thus enabling the stereoselective synthesis of a series of functionalized compounds and natural products.Faster halogen-magnesium and halogen-zinc exchanges in toluene were realized using a novel kind of exchange reagent complexed with lithium alkoxide. These highly efficient exchange reactions are much faster than traditional ones and performed in an industrially friendly solvent. These advantages are of great value in practical synthesis, paving the way for new developments in this evolving area.Halogen-lanthanide exchanges and their novel applications in organic synthesis were established. These new exchanges introduced the lanthanide metals into halogen-metal exchange reactions for the first time, thereby opening new avenues in synthetic chemistry. Building on these achievements, a comparative analysis of the exchange reaction rates by kinetic study has quantified the relationship between the electronegativity of metals and the rates of halogen-metal exchanges.Br/Na exchange in continuous flow was achieved using a hexane-soluble exchange reagent, 2-ethylhexylsodium. This approach effectively circumvented the poor solubility of the organosodium reagent, which has proven to be of significant practical value and greatly enhanced the synthetic utility of the organosodium reagent in organic synthesis.These remarkable breakthroughs as mentioned above are fueled mainly by upgrading the exchange reagents, resulting in the development of new halogen-metal exchange reactions and innovative applications in organic synthesis. Given the importance of halogen-metal exchanges in synthetic chemistry, the pursuit of other types of exchange reactions, particularly those involving new metals, will be in continuous demand. This Account provides a timely summary of recent progress and will undoubtedly inspire further advances to drive this research field forward.
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Affiliation(s)
- Baosheng Wei
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan China
| | - Yi-Hung Chen
- Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei China
| | - Paul Knochel
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, Haus F, 81377 München, Germany
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3
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Yamaguchi H, Takahashi F, Kurogi T, Yorimitsu H. Reductive anti-Dizincation of Arylacetylenes. Chem Asian J 2024; 19:e202400384. [PMID: 38647096 DOI: 10.1002/asia.202400384] [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: 04/05/2024] [Revised: 04/22/2024] [Accepted: 04/22/2024] [Indexed: 04/25/2024]
Abstract
Arylacetylenes undergo anti-1,2-dizincation to afford trans-1,2-dizincioalkenes. The process employs sodium dispersion as a reducing agent and zinc chloride TMEDA complex as a reduction-resistant zinc electrophile. This reductive anti-dizincation contrasts with the conventional additive syn-dimetalation like silylzincation. The resulting dizincated alkenes undergo the cross-coupling to yield multi-substituted alkenes stereoselectively.
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Affiliation(s)
- Haruka Yamaguchi
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Fumiya Takahashi
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Takashi Kurogi
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Hideki Yorimitsu
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
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4
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Kumar Bisai M, Łosiewicz J, Sotorrios L, Nichol GS, Dominey AP, Cowley MJ, Thomas SP, Macgregor SA, Ingleson MJ. Transition Metal-Free Catalytic C-H Zincation and Alumination. Angew Chem Int Ed Engl 2024; 63:e202404848. [PMID: 38577790 DOI: 10.1002/anie.202404848] [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: 03/11/2024] [Revised: 04/02/2024] [Accepted: 04/05/2024] [Indexed: 04/06/2024]
Abstract
C-H metalation is the most efficient method to prepare aryl-zinc and -aluminium complexes that are ubiquitous nucleophiles. Virtually all C-H metalation routes to form Al/Zn organometallics require stoichiometric, strong Brønsted bases with no base-catalyzed reactions reported. Herein we present a catalytic in amine/ammonium salt (Et3N/[(Et3N)H]+) C-H metalation process to form aryl-zinc and aryl-aluminium complexes. Key to this approach is coupling an endergonic C-H metalation step with a sufficiently exergonic dehydrocoupling step between the ammonium salt by-product of C-H metalation ([(Et3N)H]+) and a Zn-H or Al-Me containing complex. This step, forming H2/MeH, makes the overall cycle exergonic while generating more of the reactive metal electrophile. Mechanistic studies supported by DFT calculations revealed metal-specific dehydrocoupling pathways, with the divergent reactivity due to the different metal valency (which impacts the accessibility of amine-free cationic metal complexes) and steric environment. Notably, dehydrocoupling in the zinc system proceeds through a ligand-mediated pathway involving protonation of the β-diketiminate Cγ position. Given this process is applicable to two disparate metals (Zn and Al), other main group metals and ligand sets are expected to be amenable to this transition metal-free, catalytic C-H metalation.
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Affiliation(s)
- Milan Kumar Bisai
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, United Kingdom
| | - Justyna Łosiewicz
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, United Kingdom
| | - Lia Sotorrios
- School of Health Sciences, University of Manchester, Manchester, M13 9PT, United Kingdom
| | - Gary S Nichol
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, United Kingdom
| | - Andrew P Dominey
- GSK Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, United Kingdom
| | - Michael J Cowley
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, United Kingdom
| | - Stephen P Thomas
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, United Kingdom
| | - Stuart A Macgregor
- EaStCHEM School of Chemistry, University of St Andrews, St. Andrews, KY16 9ST, United Kingdom
| | - Michael J Ingleson
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, United Kingdom
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5
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Saraswat SK, Seemaladinne R, Abdullah MN, Zaini H, Ahmad N, Ahmad N, Vessally E. Aryl fluorosulfates: powerful and versatile partners in cross-coupling reactions. RSC Adv 2023; 13:13642-13654. [PMID: 37152576 PMCID: PMC10155759 DOI: 10.1039/d3ra01791e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Accepted: 04/20/2023] [Indexed: 05/09/2023] Open
Abstract
Aryl fluorosulfates are versatile building blocks in organic synthesis and have gained increasing attention in SuFEx (Sulfur Fluoride Exchange) click chemistry. They are easily and conveniently prepared from phenols using sulfuryl fluoride SO2F2 as a low-cost sulfonyl fluoride provider. Recently, they served as less toxic and more atom economical alternatives to triflates in an impressive number of carbon-carbon and carbon-heteroatom cross-coupling reactions. In this review, we summarize the current advances and developments in applying aryl fluorosulfates as electrophilic partners in cross-coupling reactions.
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Affiliation(s)
| | | | - Media Noori Abdullah
- Department of Chemistry, College of Science, Salahaddin University-Erbil Kurdistan Region Iraq
| | - Halim Zaini
- Departement Chemical Engineering of Politeknik Negeri Lhokseumawe Indonesia
| | - Nabeel Ahmad
- Department of Biotechnology, School of Allied Sciences, Dev Bhoomi Uttarakhand University Dehradun-248007 Uttarakhand India
| | - Nafis Ahmad
- Department of Physics, College of Science, King Khalid University P.O. Box: 960 Abha 61421 Kingdom of Saudi Arabia
| | - Esmail Vessally
- Department of Chemistry, Payame Noor University P.O. Box 19395-1697 Tehran Iran
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6
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Li R, Ouyang F, Bai Y, Tang R, Yu G, Wei B. Modular and Selective Access to Functionalized Alkynes and Allenes via the Intermediacy of Propargylic Acetates. Org Lett 2023; 25:2543-2547. [PMID: 37018539 DOI: 10.1021/acs.orglett.3c00750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
We report an efficient one-pot, two-step procedure for the modular synthesis of α-difunctionalized alkynes and trisubstituted allenes by sequential cross-coupling of benzal gem-diacetates with organozinc or -copper reagents in the absence of external transition metals. The intermediacy of propargylic acetates enables the divergent and selective synthesis of these valuable products. This method features its readily accessible substrates, relatively mild conditions, wide scope, and scalability in practical synthesis.
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Affiliation(s)
- Rundong Li
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Feng Ouyang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Yike Bai
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Ruiren Tang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Guipeng Yu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Baosheng Wei
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
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7
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Hu Y, Peng J, Hu B, Wang J, Jing J, Lin J, Liu X, Qi X, Li J. Stereoselective C-O silylation and stannylation of alkenyl acetates. Nat Commun 2023; 14:1454. [PMID: 36922528 PMCID: PMC10017796 DOI: 10.1038/s41467-023-37192-7] [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: 07/26/2022] [Accepted: 03/03/2023] [Indexed: 03/17/2023] Open
Abstract
Facile formation of carbon-heteroatom bonds is a long-standing objective in synthetic organic chemistry. However, direct cross-coupling with readily accessible alkenyl acetates via inert C‒O bond-cleavage for the carbon-heteroatom bond construction remains challenging. Here we report a practical preparation of stereoselective tri- and tetrasubstituted alkenyl silanes and stannanes by performing cobalt-catalyzed C‒O silylation and stannylation of alkenyl acetates using silylzinc pivalate and stannylzinc chloride as the nucleophiles. This protocol features a complete control of chemoselectivity, stereoselectivity, as well as excellent functional group compatibility. The resulting alkenyl silanes and stannanes show high reactivities in arylation and alkenylation by Hiyama and Stille reactions. The synthetic utility is further illustrated by the facile late-stage modifications of natural products and drug-like molecules. Mechanistic studies suggest that the reaction might involve a chelation-assisted oxidative insertion of cobalt species to C‒O bond. We anticipate that our findings should prove instrumental for potential applications of this technology to organic syntheses and drug discoveries in medicinal chemistry.
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Affiliation(s)
- Ying Hu
- Key Laboratory of Organic Synthesis of Jiangsu Province, Suzhou Key Laboratory of Pathogen Bioscience and Anti-infective Medicine, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Ren-Ai Road 199, Suzhou, 215123, P. R. China
| | - Jiali Peng
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, P. R. China.,School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, Henan, 453003, P. R. China
| | - Binjing Hu
- Key Laboratory of Organic Synthesis of Jiangsu Province, Suzhou Key Laboratory of Pathogen Bioscience and Anti-infective Medicine, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Ren-Ai Road 199, Suzhou, 215123, P. R. China
| | - Jixin Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, Suzhou Key Laboratory of Pathogen Bioscience and Anti-infective Medicine, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Ren-Ai Road 199, Suzhou, 215123, P. R. China
| | - Jing Jing
- Key Laboratory of Organic Synthesis of Jiangsu Province, Suzhou Key Laboratory of Pathogen Bioscience and Anti-infective Medicine, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Ren-Ai Road 199, Suzhou, 215123, P. R. China
| | - Jie Lin
- Key Laboratory of Organic Synthesis of Jiangsu Province, Suzhou Key Laboratory of Pathogen Bioscience and Anti-infective Medicine, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Ren-Ai Road 199, Suzhou, 215123, P. R. China
| | - Xingchen Liu
- Key Laboratory of Organic Synthesis of Jiangsu Province, Suzhou Key Laboratory of Pathogen Bioscience and Anti-infective Medicine, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Ren-Ai Road 199, Suzhou, 215123, P. R. China
| | - Xiaotian Qi
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, P. R. China
| | - Jie Li
- Key Laboratory of Organic Synthesis of Jiangsu Province, Suzhou Key Laboratory of Pathogen Bioscience and Anti-infective Medicine, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Ren-Ai Road 199, Suzhou, 215123, P. R. China. .,State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P. R. China.
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8
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Cobalt-Catalyzed C–C Coupling Reactions with Csp3 Electrophiles. TOP ORGANOMETAL CHEM 2023. [DOI: 10.1007/3418_2023_83] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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9
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Yamada K, Kintzel MB, Perry GJP, Saito H, Yorimitsu H. Zincation of Styrylsulfonium Salts. Org Lett 2022; 24:7446-7449. [PMID: 36194640 DOI: 10.1021/acs.orglett.2c03013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the formation of zinc reagents by the reaction of styrylsulfonium salts with zinc powder. Transition metals and other additives are not required for promoting zincation. Zincation tolerates a variety of sensitive functional groups, including esters, bromides, and boronic esters, and proceeds with complete retention of stereochemistry. This method presents a practical approach to the formation of zinc reagents that can be used in a variety of functionalizations, such as halogenation, carboxylation, and Negishi cross-couplings.
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Affiliation(s)
- Kodai Yamada
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Mika B Kintzel
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Gregory J P Perry
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Hayate Saito
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Hideki Yorimitsu
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
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10
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Tian X, Kaur J, Yakubov S, Barham JP. α-Amino Radical Halogen Atom Transfer Agents for Metallaphotoredox-Catalyzed Cross-Electrophile Couplings of Distinct Organic Halides. CHEMSUSCHEM 2022; 15:e202200906. [PMID: 35587725 PMCID: PMC9541218 DOI: 10.1002/cssc.202200906] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Indexed: 06/15/2023]
Abstract
α-Amino radicals from simple tertiary amines were employed as halogen atom transfer (XAT) agents in metallaphotoredox catalysis for cross-electrophile couplings of organic bromides with organic iodides. This XAT strategy proved to be efficient for the generation of carbon radicals from a range of partners (alkyl, aryl, alkenyl, and alkynyl iodides). The reactivities of these radical intermediates were captured by nickel catalysis with organobromides including aryl, heteroaryl, alkenyl, and alkyl bromides, enabling six diverse C-C bond formations. Classic named reactions including Negishi, Suzuki, Heck, and Sonogashira reactions were readily achieved in a net-reductive fashion under mild conditions. More importantly, the cross coupling was viable with either organic bromide or iodide as limiting reactant based on the availability of substrates, which is beneficial to the late-stage functionalization of complex molecules. The scalability of this method in batch and flow was investigated, further demonstrating its applicability.
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Affiliation(s)
- Xianhai Tian
- Institute of Organic ChemistryUniversity of RegensburgUniversitätsstr. 3193053RegensburgGermany
| | - Jaspreet Kaur
- Institute of Organic ChemistryUniversity of RegensburgUniversitätsstr. 3193053RegensburgGermany
| | - Shahboz Yakubov
- Institute of Organic ChemistryUniversity of RegensburgUniversitätsstr. 3193053RegensburgGermany
| | - Joshua P. Barham
- Institute of Organic ChemistryUniversity of RegensburgUniversitätsstr. 3193053RegensburgGermany
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11
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Xiang J, Patureau FW. Cross Dehydrogenative Coupling of Chloro‐ and Fluoroalkanes with Methylarenes. CHEMPHOTOCHEM 2022. [DOI: 10.1002/cptc.202200130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jia‐Xiang Xiang
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Frederic W. Patureau
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 52074 Aachen Germany
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12
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Zhang P, Wang J, Robertson ZR, Newhouse TR. Coordination‐Controlled Nickel‐Catalyzed Benzylic Allylation of Unactivated Electron‐Deficient Heterocycles. Angew Chem Int Ed Engl 2022; 61:e202200602. [DOI: 10.1002/anie.202200602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Indexed: 12/18/2022]
Affiliation(s)
- Pengpeng Zhang
- Department of Chemistry Yale University 225 Prospect Street, PO Box 208107 New Haven CT 06511 USA
| | - Jin Wang
- Department of Chemistry Yale University 225 Prospect Street, PO Box 208107 New Haven CT 06511 USA
| | - Zoe R. Robertson
- Department of Chemistry Yale University 225 Prospect Street, PO Box 208107 New Haven CT 06511 USA
| | - Timothy R. Newhouse
- Department of Chemistry Yale University 225 Prospect Street, PO Box 208107 New Haven CT 06511 USA
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13
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Zhang P, Wang J, Robertson ZR, Newhouse TR. Coordination‐Controlled Nickel‐Catalyzed Benzylic Allylation of Unactivated Electron‐Deficient Heterocycles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Jin Wang
- Yale University Department of Chemistry UNITED STATES
| | | | - Timothy R. Newhouse
- Yale University Department of Chemistry 225 Prospect St. 06511 New Haven UNITED STATES
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