1
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Groß D, van Otterlo WAL, Trapp O, Berthold D. Atroposelective Ni II -Catalyzed Cross-Coupling Reactions Enable a Deeper Understanding of Negishi Couplings: Isolation and Application of Solid Aryl Higher-Order Zincates. Chemistry 2023; 29:e202302841. [PMID: 37665654 DOI: 10.1002/chem.202302841] [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: 08/31/2023] [Revised: 09/03/2023] [Accepted: 09/04/2023] [Indexed: 09/06/2023]
Abstract
The Negishi cross-coupling reactions involves the application of organozinc reagents and is a highly versatile reaction in synthetic organic chemistry. The transmetallation step plays a pivotal role in the mechanism of these types of cross-coupling reactions. In this study, mechanistic investigations are presented indicating that higher-order zincates are the transmetallating active species in Pd- and Ni-catalyzed Negishi cross-coupling reactions. These findings are supported by halide salt addition experiments and by obtaining a single X-ray crystal structure of the solid monoaryl higher-order zincate [1-NaphthylZnX3 ]2- Mg(THF)2 2+ . The procedure developed in this work was further applied to the synthesis of various monoaryl higher-order zincates, after which their synthetic usefulness in terms of high reactivity towards transmetallation in Negishi cross-couplings, as well as stability, was exemplified in several reactions.
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Affiliation(s)
- Damian Groß
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, Haus F, 81377, München, Germany
| | - Willem A L van Otterlo
- Department of Chemistry and Polymer Sciences, Stellenbosch University, Private Bag XI, Matieland, 7602, Stellenbosch, South Africa) ORTEP
| | - Oliver Trapp
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, Haus F, 81377, München, Germany
| | - Dino Berthold
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, Haus F, 81377, München, Germany
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2
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Liang H, Morken JP. Substrate Plasticity Enables Group-Selective Transmetalation: Catalytic Stereospecific Cross-Couplings of Tertiary Boronic Esters. J Am Chem Soc 2023; 145:20755-20760. [PMID: 37651751 PMCID: PMC10924285 DOI: 10.1021/jacs.3c07129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Activation of enantiomerically enriched tertiary alkylboronic esters with adamantyllithium generated in situ enables stereoretentive boron-to-copper transmetalation. The resulting alkylcopper species can undergo cross-coupling reactions with an array of electrophiles to furnish synthetically useful compounds bearing quaternary stereocenters. DFT calculations of the transmetalation process provide insights for reactivity and selectivity.
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Affiliation(s)
- Hao Liang
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - James P Morken
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
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3
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Ohsato H, Kawauchi K, Yamada S, Konno T. Diverse Synthetic Transformations Using 4-Bromo-3,3,4,4-tetrafluorobut-1-ene and Its Applications in the Preparation of CF 2 CF 2 -Containing Sugars, Liquid Crystals, and Light-Emitting Materials. CHEM REC 2023; 23:e202300080. [PMID: 37140105 DOI: 10.1002/tcr.202300080] [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: 03/01/2023] [Revised: 04/16/2023] [Indexed: 05/05/2023]
Abstract
Organic molecules with fluoroalkylene scaffolds, especially a tetrafluoroethylene (CF2 CF2 ) moiety, in their molecular structures exhibit unique biological activities, or can be applied to functional materials such as liquid crystals and light-emitting materials. Although several methods for the syntheses of CF2 CF2 -containing organic molecules have been reported to date, they have been limited to methods using explosives and fluorinating agents. Therefore, there is an urgent need to develop simple and efficient approaches to synthesize CF2 CF2 -containing organic molecules from readily available fluorinated substrates using carbon-carbon bond formation reactions. This personal account summarizes the simple and efficient transformation of functional groups at both ends of 4-bromo-3,3,4,4-tetrafluorobut-1-ene and discusses its synthetic applications to biologically active fluorinated sugars and functional materials, such as liquid crystals and light-emitting molecules.
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Affiliation(s)
- Haruka Ohsato
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Kazuma Kawauchi
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Shigeyuki Yamada
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Tsutomu Konno
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
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4
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Han D, Sun J, Jin J. Picolinamide Ligands: Nickel-Catalyzed Reductive Cross-Coupling of Aryl Bromides with Bromocyclopropane and Beyond. Chem Asian J 2023; 18:e202201132. [PMID: 36479828 DOI: 10.1002/asia.202201132] [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: 11/08/2022] [Revised: 12/05/2022] [Accepted: 12/06/2022] [Indexed: 12/12/2022]
Abstract
The arylcyclopropane motif as the combination of aryl and cyclopropyl ring systems can be found in an increasing amount of approved and investigational drugs. Herein, we have developed a mild, efficient nickel-catalyzed reductive cross-coupling protocol, featuring a simple Ni(II) precatalyst and a novel picolinamide NN2 pincer ligand. A variety of (hetero)aryl bromides could successfully couple with cyclopropyl bromide to furnish the valued arylcyclopropanes in good to excellent yields. This method is applicable to other alkyl bromides as well. Notably, the reaction is tolerant of a broad range of functionalities including free amines. Furthermore, the synthesis of several significant intermediates of bioactive molecules was achieved in grams, proving the practicability of this method.
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Affiliation(s)
- Dongyang Han
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Jie Sun
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Jian Jin
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
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5
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Lokolkar MS, Kolekar YA, Jagtap PA, Bhanage BM. Cu-Catalyzed C-C Coupling Reactions. TOP ORGANOMETAL CHEM 2023. [DOI: 10.1007/3418_2022_81] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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6
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Lin Q, Gong H, Wu F. Ni-Catalyzed Reductive Coupling of Heteroaryl Bromides with Tertiary Alkyl Halides. Org Lett 2022; 24:8996-9000. [DOI: 10.1021/acs.orglett.2c03598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- Quan Lin
- School of Materials Science and Engineering, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China
| | - Hegui Gong
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China
| | - Fan Wu
- Institute of Drug Discovery Technology and Qian Xuesen Collaborative Research Center of Astrochemistry and Space Life Sciences, Ningbo University, Ningbo, Zhejiang 315211, China
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7
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Tang Q, Yuan M, Duan J, Xu K, Li R, Xie M, Kong S, He X, Shang Y. Metal‐Free Cascade Annulation Approach for Modular Assembly of Alkynyl/Benzoyl Functionalized Quinolines. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101285] [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)
- Qiang Tang
- Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base) College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 P. R. China
| | - Meng Yuan
- Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base) College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 P. R. China
| | - Jiahui Duan
- Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base) College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 P. R. China
| | - Keke Xu
- Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base) College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 P. R. China
| | - Ruxue Li
- Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base) College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 P. R. China
| | - Mengqing Xie
- Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base) College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 P. R. China
| | - Shuwen Kong
- Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base) College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 P. R. China
| | - Xinwei He
- Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base) College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 P. R. China
- Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province Hunan Normal University Changsha 410081 P. R. China
| | - Yongjia Shang
- Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base) College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 P. R. China
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8
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Zhou Y, Hua R. Synthesis of 1-Benzyl-, 1-Alkoxyl-, and 1-Aminoisoquinolines via Rhodium(III)-Catalyzed Aryl C-H Activation and Alkyne Annulation. J Org Chem 2021; 86:8862-8872. [PMID: 34164989 DOI: 10.1021/acs.joc.1c00786] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
One-pot syntheses of 1-benzyl-, 1-alkoxyl-, and 1-alkylamino- isoquinolines through automatic directing group (DGauto)-assisted, rhodium(III)-catalyzed aryl C-H activation and annulation with internal alkynes were developed. The reactions affording 1-benzylisoquinolines involve a cascade oximation of diarylacetylenes with hydroxylamine, forming aryl benzyl ketone oxime, and oxime-assisted rhodium(III)-catalyzed aryl C-H activation and followed annulation with another molecule of diarylacetylene in a one-pot manner. The formation of 1-alkoxyl/amino isoquinolines includes the addition of nucleophilic alcohols or amines to aryl nitriles, imine-assisted rhodium-catalyzed aryl C-H activation, and subsequent alkyne annulation.
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Affiliation(s)
- Yiming Zhou
- Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Ruimao Hua
- Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China
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9
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Vogt N, Sandleben A, Kletsch L, Schäfer S, Chin MT, Vicic DA, Hörner G, Klein A. Role of the X Coligands in Cyclometalated [Ni(Phbpy)X] Complexes (HPhbpy = 6-Phenyl-2,2′-bipyridine). Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nicolas Vogt
- Department für Chemie, Institut für Anorganische Chemie, Universität zu Köln, Greinstraße 6, D-50939 Köln, Germany
| | - Aaron Sandleben
- Department für Chemie, Institut für Anorganische Chemie, Universität zu Köln, Greinstraße 6, D-50939 Köln, Germany
| | - Lukas Kletsch
- Department für Chemie, Institut für Anorganische Chemie, Universität zu Köln, Greinstraße 6, D-50939 Köln, Germany
| | - Sascha Schäfer
- Department für Chemie, Institut für Anorganische Chemie, Universität zu Köln, Greinstraße 6, D-50939 Köln, Germany
| | - Mason T. Chin
- Department of Chemistry, Lehigh University, 6 East Packer Avenue, Bethlehem, Pennsylvania 18015, United States
| | - David A. Vicic
- Department of Chemistry, Lehigh University, 6 East Packer Avenue, Bethlehem, Pennsylvania 18015, United States
| | - Gerald Hörner
- Institut für Chemie, Anorganische Chemie IV, Universität Bayreuth, Universitätsstraße 30, D-95440 Bayreuth, Germany
| | - Axel Klein
- Department für Chemie, Institut für Anorganische Chemie, Universität zu Köln, Greinstraße 6, D-50939 Köln, Germany
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10
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Simlandy AK, Sardini SR, Brown MK. Construction of congested Csp 3-Csp 3 bonds by a formal Ni-catalyzed alkylboration. Chem Sci 2021; 12:5517-5521. [PMID: 34168789 PMCID: PMC8179681 DOI: 10.1039/d1sc00900a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Through the combination of a Ni-catalyzed alkene alkenylboration followed by hydrogenation, the synthesis of congested Csp3–Csp3-bonds can be achieved. Conditions have been identified that allow for the use of both alkenyl-bromides and -triflates. In addition, the hydrogenation creates another opportunity for stereocontrol, thus allowing access to multiple stereoisomers of the product. Finally, the method is demonstrated in the streamlined synthesis of a biologically relevant molecule. Through the combination of a Ni-catalyzed alkene alkenylboration followed by hydrogenation, the synthesis of congested Csp3–Csp3-bonds can be achieved.![]()
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Affiliation(s)
- Amit Kumar Simlandy
- Department of Chemistry, Indiana University 800E. Kirkwood Ave Bloomington IN 47401 USA
| | - Stephen R Sardini
- Department of Chemistry, Indiana University 800E. Kirkwood Ave Bloomington IN 47401 USA
| | - M Kevin Brown
- Department of Chemistry, Indiana University 800E. Kirkwood Ave Bloomington IN 47401 USA
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11
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Ramakrishna D. Ionic liquid immobilized Cu(I)–hydrazone–triphenylphosphine complex: an easily recyclable catalytic system for Suzuki and Heck cross couplings. CAN J CHEM 2021. [DOI: 10.1139/cjc-2020-0403] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A highly efficient, reusable, catalytic system of Heck and Suzuki cross-coupling reactions was observed for an inexpensive copper complex dispersed in ethyl-methyl imidazolium hexafluorophosphate medium, [EMIM]PF6. The reaction conditions were optimized by studying the effects of temperature, catalyst concentration, solvent, and time. This method functions for a variety of substrates towards the cross-coupling reactions. Most notably, the catalyst – ionic liquid mixture was easily recoverable and reused six times without much loss in the catalytic activity, causing a notably very low impact on the environment.
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Affiliation(s)
- Dileep Ramakrishna
- Department of Chemistry, Presidency University, Yelahanka, Bengaluru 560064, India
- Department of Chemistry, Presidency University, Yelahanka, Bengaluru 560064, India
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12
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Moghadam H, Sobhani S, Sansano JM. New Nanomagnetic Heterogeneous Cobalt Catalyst for the Synthesis of Aryl Nitriles and Biaryls. ACS OMEGA 2020; 5:18619-18627. [PMID: 32775864 PMCID: PMC7407554 DOI: 10.1021/acsomega.0c01002] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 06/24/2020] [Indexed: 05/03/2023]
Abstract
Cobalt nanoparticles immobilized on magnetic chitosan (Fe3O4@CS-Co) have been prepared. They were identified using various techniques such as Fourier-transform infrared spectroscopy, X-ray diffraction, field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, thermogravimetric analysis, vibrating sample magnetometry, X-ray photoelectron spectroscopy, and inductively coupled plasma atomic emission spectroscopy analysis and applied efficiently as a cobalt catalyst in the cyanation and fluoride-/palladium-free Hiyama reactions of different types of aryl halides employing K4[Fe(CN)6]·3H2O and triethoxyphenylsilane, respectively. After each reaction, the catalyst was isolated and reused for the second run. The catalytic activity of the catalyst was not lost apparently even after five runs. No considerable changes in its chemical structure and morphology were observed. It is worth to note that in this paper, the cobalt catalyst has been used for the first time for the cyanation of aryl halides.
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Affiliation(s)
- Hadis
Hosseini Moghadam
- Department
of Chemistry, College of Sciences, University
of Birjand, Birjand 9717434765, Iran
| | - Sara Sobhani
- Department
of Chemistry, College of Sciences, University
of Birjand, Birjand 9717434765, Iran
| | - José Miguel Sansano
- Departamento
de Química Orgánica, Facultad de Ciencias, Centro de
Innovación en Química Avanzada (ORFEO-CINQA) and Instituto
de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, Alicante 03080, Spain
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13
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Chen H, Ye Y, Tong W, Fang J, Gong H. Formation of allylated quaternary carbon centers via C-O/C-O bond fragmentation of oxalates and allyl carbonates. Chem Commun (Camb) 2020; 56:454-457. [PMID: 31825428 DOI: 10.1039/c9cc07072a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Disclosed herein emphasizes Fe-promoted cross-electrophile allylation of tertiary alkyl oxalates with allyl carbonates that generates all C(sp3)-quaternary centers. The reaction involves fragmentation of tertiary alkyl oxalate C-O bonds to give tertiary alkyl radical intermediates, addition of the radicals to less hindered alkene terminals, and subsequent cleavage of the allyl C-O bonds. Allylation with 2-aryl substituted allyl carbonates was mediated by Zn/MgCl2, and Fe is used to promote the radical addition efficiency. By introduction of activated alkenes, a three-component radical cascade reaction took place.
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Affiliation(s)
- Haifeng Chen
- School of Materials Science and Engineering, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China.
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14
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Paul S, Bhakat M, Guin J. Radical C−H Acylation of Nitrogen Heterocycles Induced by an Aerobic Oxidation of Aldehydes. Chem Asian J 2019; 14:3154-3160. [DOI: 10.1002/asia.201900857] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Subhasis Paul
- School of Chemical SciencesIndian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road, Jadavpur Kolkata- 700032 India
| | - Manotosh Bhakat
- School of Chemical SciencesIndian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road, Jadavpur Kolkata- 700032 India
| | - Joyram Guin
- School of Chemical SciencesIndian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road, Jadavpur Kolkata- 700032 India
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15
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Zhang X, McNally A. Cobalt-Catalyzed Alkylation of Drug-Like Molecules and Pharmaceuticals Using Heterocyclic Phosphonium Salts. ACS Catal 2019; 9:4862-4866. [PMID: 31656687 DOI: 10.1021/acscatal.9b00851] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Alkylated pyridines are common in pharmaceuticals, and metal catalysis is frequently used to prepare this motif via Csp2-Csp3 coupling processes. We present a cobalt-catalyzed coupling reaction between pyridine phosphonium salts and alkylzinc reagents that can be applied to complex drug-like fragments and for late-stage functionalization of pharmaceuticals. The reaction generally proceeds at room temperature, and 4-position pyridine C-H bonds are the precursors in this strategy. Given the challenges in selectively installing (pseudo)halides in complex pyridines, this two-step process enables sets of molecules to be alkylated that would be challenging using traditional cross-coupling methods.
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Affiliation(s)
- Xuan Zhang
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Andrew McNally
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
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16
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Huang P, Xu D, Reich RM, Kaiser F, Liu B, Kühn FE. Et2Zn-mediated stoichiometric C(sp)-H silylation of 1-alkynes and chlorosilanes. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.05.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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17
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Liu Y, Zhang D, Xiao S, Qi Y, Liu S. Copper‐Catalyzed Homocoupling of Alkyl Halides in the Presence of Samarium. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900254] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yongjun Liu
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science Ministry of Education State Key Laboratory Base of Eco-chemical Engineering College of Chemistry and Molecular EngineeringQingdao University of Science and Technology Zhengzhou Rd. #53 Qingdao 266042 P.R. China
| | - Dianming Zhang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science Ministry of Education State Key Laboratory Base of Eco-chemical Engineering College of Chemistry and Molecular EngineeringQingdao University of Science and Technology Zhengzhou Rd. #53 Qingdao 266042 P.R. China
| | - Shuhuan Xiao
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science Ministry of Education State Key Laboratory Base of Eco-chemical Engineering College of Chemistry and Molecular EngineeringQingdao University of Science and Technology Zhengzhou Rd. #53 Qingdao 266042 P.R. China
| | - Yan Qi
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science Ministry of Education State Key Laboratory Base of Eco-chemical Engineering College of Chemistry and Molecular EngineeringQingdao University of Science and Technology Zhengzhou Rd. #53 Qingdao 266042 P.R. China
| | - Shufeng Liu
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science Ministry of Education State Key Laboratory Base of Eco-chemical Engineering College of Chemistry and Molecular EngineeringQingdao University of Science and Technology Zhengzhou Rd. #53 Qingdao 266042 P.R. China
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18
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19
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Condakes M, Rosen RZ, Harwood SJ, Maimone TJ. A copper-catalyzed double coupling enables a 3-step synthesis of the quassinoid core architecture. Chem Sci 2019. [DOI: 10.1039/c8sc03835j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
A cross coupling/SN2′ tandem reaction is described to construct the polycyclic core architecture of the quassinoids, a fascinating class of degraded triterpenes with potent anticancer activity.
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Affiliation(s)
| | - Rachel Z. Rosen
- Department of Chemistry
- University of California, Berkeley
- Berkeley
- USA
| | | | - Thomas J. Maimone
- Department of Chemistry
- University of California, Berkeley
- Berkeley
- USA
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20
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Ayogu JI, Onoabedje EA. Recent advances in transition metal-catalysed cross-coupling of (hetero)aryl halides and analogues under ligand-free conditions. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01331h] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The formation of new bonds is pivotal in organic chemistry and a prerequisite to life because it allows the construction of complex molecules from simple precursors.
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Affiliation(s)
- Jude I. Ayogu
- Department of Pure and Industrial Chemistry
- University of Nigeria
- Nsukka
- Nigeria
- Department of Chemistry
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21
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Fulton TJ, Alley PL, Rensch HR, Ackerman AM, Berlin CB, Krout MR. Access to Functionalized Quaternary Stereocenters via the Copper-Catalyzed Conjugate Addition of Monoorganozinc Bromide Reagents Enabled by N, N-Dimethylacetamide. J Org Chem 2018; 83:14723-14732. [PMID: 30376627 DOI: 10.1021/acs.joc.8b02201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Monoorganozinc reagents, readily obtained from alkyl bromides, display excellent reactivity with β,β-disubstituted enones and TMSCl in the presence of Cu(I) and Cu(II) salts to synthesize a variety of cyclic functionalized β-quaternary ketones in 38-99% yields and 9:1-20:1 diastereoselectivities. The conjugate addition features a pronounced improvement in DMA using monoorganozinc bromide reagents. A simple one-pot protocol that harnesses in situ generated monoorganozinc reagents delivers comparable product yields.
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Affiliation(s)
- Tyler J Fulton
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
| | - Phebe L Alley
- Department of Chemistry , Bucknell University , Lewisburg , Pennsylvania 17837 , United States
| | - Heather R Rensch
- Research and Development, Bimax, Inc. , Glen Rock , Pennsylvania 17327 , United States
| | - Adriana M Ackerman
- Department of Chemistry , Bucknell University , Lewisburg , Pennsylvania 17837 , United States
| | - Cameron B Berlin
- Department of Chemistry , Bucknell University , Lewisburg , Pennsylvania 17837 , United States
| | - Michael R Krout
- Department of Chemistry , Bucknell University , Lewisburg , Pennsylvania 17837 , United States
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22
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Liu P, Chen C, Cong X, Tang J, Zeng X. Chromium-catalyzed para-selective formation of quaternary carbon centers by alkylation of benzamide derivatives. Nat Commun 2018; 9:4637. [PMID: 30401829 PMCID: PMC6219510 DOI: 10.1038/s41467-018-07069-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 10/09/2018] [Indexed: 01/01/2023] Open
Abstract
Selective creation of quaternary carbon centers has been a long-standing challenge in synthetic chemistry. We report here the chromium-catalyzed, para-selective formation of arylated quaternary carbon centers by alkylative reactions of benzamide derivatives with tertiary alkylmagnesium bromides at room temperature. The reaction, which was enabled by a low-cost chromium(III) salt combined with trimethylsilyl bromide, introduces a sterically bulky tertiary alkyl scaffold on the para-position of benzamide derivatives in a highly selective fashion without either isomerization of the tertiary alkyl group or formation of ortho-alkylated byproducts. Forming low-valent Cr species in situ by reaction of CrCl3 with t-BuMgBr accompanied by evolution of hydrogen can be considered, which serves as reactive species to promote the reaction. The para-alkylation likely occurs via a radical-type nucleophilic substitution of imino-coordination benzimidate intermediate.
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Affiliation(s)
- Pei Liu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
- Department of Applied Chemistry, School of Science, Northwestern Polytechnical University, Xi'an, 710072, China
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710054, China
| | - Changpeng Chen
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710054, China
| | - Xuefeng Cong
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710054, China
| | - Jinghua Tang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710054, China
| | - Xiaoming Zeng
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China.
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710054, China.
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23
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Li ZZ, Yu J, Wang LN, Chen SL, Sheng RL, Tang S. Cascade radical cyclization/cross-coupling of halobenzamides by synergistic Cu/Fe catalysis: An access to 7-tert-alkylated isoquinolinediones. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.09.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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24
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Yang W, Huang D, Zeng X, Luo D, Wang X, Hu Y. N-Sulfonyl acetylketenimine as a highly reactive intermediate for the synthesis of N-sulfonyl amidines. Chem Commun (Camb) 2018; 54:8222-8225. [PMID: 29987306 DOI: 10.1039/c8cc04699a] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A highly reactive intermediate N-sulfonyl acetylketenimine was generated from a 3-butyn-2-one participating CuAAC/ring-opening method. Its high reactivity due to bearing two EWGs allowed us to offer the first example of a reaction between ketenimine and amide to synthesize N-sulfonyl amidines efficiently.
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Affiliation(s)
- Weiguang Yang
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China.
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25
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Bergmann AM, Oldham AM, You W, Brown MK. Copper-catalyzed cross-coupling of aryl-, primary alkyl-, and secondary alkylboranes with heteroaryl bromides. Chem Commun (Camb) 2018; 54:5381-5384. [PMID: 29745398 DOI: 10.1039/c8cc03145b] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A method for the Cu-catalyzed cross-coupling of both aryl and alkylboranes with aryl bromides is described. The method employs an inexpensive Cu-catalyst and functions for a variety of heterocyclic as well as electron deficient aryl bromides. In addition, aryl iodides of varying substitution patterns and electronic properties work well.
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Affiliation(s)
- Allison M Bergmann
- Indiana University, Department of Chemistry, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA.
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26
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Zhang L, Fang Y, Jin X, Guo T, Li R, Li Y, Li X, Ye Q, Luo X. Palladium-catalysed coupling of α-halo vinylphosphonate and α-phosphonovinyl sulfonate with alkylzincs: straightforward and versatile synthesis of α-alkyl vinylphosphonates. Org Chem Front 2018. [DOI: 10.1039/c8qo00156a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Easy and efficient access to α-alkylated vinylphosphonates via Pd-catalysed Negishi coupling!
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Affiliation(s)
- Li Zhang
- College of Chemistry and Chemical Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- China
| | - Yewen Fang
- School of Materials and Chemical Engineering
- Ningbo University of Technology
- Ningbo 315211
- China
- Key Laboratory of Organofluorine Chemistry
| | - Xiaoping Jin
- Department of Pharmaceutical Engineering
- Zhejiang Pharmaceutical College
- Ningbo 315100
- China
| | - Ting Guo
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials and Ministry-of-Education Key Laboratory for Synthesis and Application of Organic Functional Molecules
- Hubei University
- Wuhan 430062
- China
| | - Ruifeng Li
- College of Chemistry and Chemical Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- China
| | - Yan Li
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials and Ministry-of-Education Key Laboratory for Synthesis and Application of Organic Functional Molecules
- Hubei University
- Wuhan 430062
- China
| | - Xie Li
- School of Materials and Chemical Engineering
- Ningbo University of Technology
- Ningbo 315211
- China
| | - Qilin Ye
- School of Materials and Chemical Engineering
- Ningbo University of Technology
- Ningbo 315211
- China
| | - Xiang Luo
- School of Materials and Chemical Engineering
- Ningbo University of Technology
- Ningbo 315211
- China
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27
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Yamamoto K, Otsuka S, Nogi K, Yorimitsu H. Nickel-Catalyzed Cross-Coupling Reaction of Aryl Sulfoxides with Arylzinc Reagents: When the Leaving Group is an Oxidant. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02347] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Keita Yamamoto
- Department of Chemistry, Graduate School
of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Shinya Otsuka
- Department of Chemistry, Graduate School
of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Keisuke Nogi
- 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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28
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Chen H, Jia X, Yu Y, Qian Q, Gong H. Nickel-Catalyzed Reductive Allylation of Tertiary Alkyl Halides with Allylic Carbonates. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705521] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Haifeng Chen
- School of Materials Science and Engineering, Center for Supramolecular Materials and Catalysis and Department of Chemistry; Shanghai University; 99 Shang-Da Road Shanghai 200444 China
| | - Xiao Jia
- School of Materials Science and Engineering, Center for Supramolecular Materials and Catalysis and Department of Chemistry; Shanghai University; 99 Shang-Da Road Shanghai 200444 China
| | - Yingying Yu
- School of Materials Science and Engineering, Center for Supramolecular Materials and Catalysis and Department of Chemistry; Shanghai University; 99 Shang-Da Road Shanghai 200444 China
| | - Qun Qian
- School of Materials Science and Engineering, Center for Supramolecular Materials and Catalysis and Department of Chemistry; Shanghai University; 99 Shang-Da Road Shanghai 200444 China
| | - Hegui Gong
- School of Materials Science and Engineering, Center for Supramolecular Materials and Catalysis and Department of Chemistry; Shanghai University; 99 Shang-Da Road Shanghai 200444 China
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29
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Chen H, Jia X, Yu Y, Qian Q, Gong H. Nickel-Catalyzed Reductive Allylation of Tertiary Alkyl Halides with Allylic Carbonates. Angew Chem Int Ed Engl 2017; 56:13103-13106. [DOI: 10.1002/anie.201705521] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 08/01/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Haifeng Chen
- School of Materials Science and Engineering, Center for Supramolecular Materials and Catalysis and Department of Chemistry; Shanghai University; 99 Shang-Da Road Shanghai 200444 China
| | - Xiao Jia
- School of Materials Science and Engineering, Center for Supramolecular Materials and Catalysis and Department of Chemistry; Shanghai University; 99 Shang-Da Road Shanghai 200444 China
| | - Yingying Yu
- School of Materials Science and Engineering, Center for Supramolecular Materials and Catalysis and Department of Chemistry; Shanghai University; 99 Shang-Da Road Shanghai 200444 China
| | - Qun Qian
- School of Materials Science and Engineering, Center for Supramolecular Materials and Catalysis and Department of Chemistry; Shanghai University; 99 Shang-Da Road Shanghai 200444 China
| | - Hegui Gong
- School of Materials Science and Engineering, Center for Supramolecular Materials and Catalysis and Department of Chemistry; Shanghai University; 99 Shang-Da Road Shanghai 200444 China
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30
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Transmetalation of Alkylzirconocenes in Copper-Catalyzed Alkyl-Alkynyl Cross-Coupling Reactions. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700164] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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31
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Basch CH, Liao J, Xu J, Piane JJ, Watson MP. Harnessing Alkyl Amines as Electrophiles for Nickel-Catalyzed Cross Couplings via C-N Bond Activation. J Am Chem Soc 2017; 139:5313-5316. [PMID: 28359153 PMCID: PMC5480296 DOI: 10.1021/jacs.7b02389] [Citation(s) in RCA: 226] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We developed a strategy to harness alkyl amines as alkylating agents via C-N bond activation. This Suzuki-Miyaura cross coupling of alkylpyridinium salts, readily formed from primary amines, is the first example of a metal-catalyzed cross coupling via C-N bond activation of an amine with an unactivated alkyl group. This reaction enjoys broad scope and functional group tolerance. Primary and secondary alkyl groups can be installed. Preliminary studies suggest a NiI/NiIII catalytic cycle.
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Affiliation(s)
- Corey H. Basch
- Department of Chemistry & Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Jennie Liao
- Department of Chemistry & Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Jianyu Xu
- Department of Chemistry & Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Jacob J. Piane
- Department of Chemistry & Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Mary P. Watson
- Department of Chemistry & Biochemistry, University of Delaware, Newark, Delaware 19716, United States
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32
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Thapa S, Basnet P, Giri R. Copper-Catalyzed Dicarbofunctionalization of Unactivated Olefins by Tandem Cyclization/Cross-Coupling. J Am Chem Soc 2017; 139:5700-5703. [DOI: 10.1021/jacs.7b01922] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Surendra Thapa
- Department of Chemistry & Chemical Biology, The University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Prakash Basnet
- Department of Chemistry & Chemical Biology, The University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Ramesh Giri
- Department of Chemistry & Chemical Biology, The University of New Mexico, Albuquerque, New Mexico 87131, United States
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33
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Wang X, Xie P, Qiu R, Zhu L, Liu T, Li Y, Iwasaki T, Au CT, Xu X, Xia Y, Yin SF, Kambe N. Nickel-catalysed direct alkylation of thiophenes via double C(sp3)–H/C(sp2)–H bond cleavage: the importance of KH2PO4. Chem Commun (Camb) 2017; 53:8316-8319. [DOI: 10.1039/c7cc04252c] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Ni-catalyzed C–H/C–H cross-dehydrogenative coupling (CDC) reaction was developed for constructing various highly functionalized alkyl (aryl)-substituted thiophenes.
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34
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Ramakrishna V, Dastagiri Reddy N. Synthesis of zwitterionic palladium complexes and their application as catalysts in cross-coupling reactions of aryl, heteroaryl and benzyl bromides with organoboron reagents in neat water. Dalton Trans 2017. [DOI: 10.1039/c7dt01433c] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Imidazolium substituted quinoxaline based zwitterionic Pd(ii) complexes were synthesized and found to be excellent catalysts for carrying out Suzuki–Miyaura cross-coupling reactions in neat water.
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Affiliation(s)
- V. Ramakrishna
- Department of Chemistry
- Pondicherry University
- Pondicherry 605014
- India
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35
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Shi S, Szostak M. Nickel-Catalyzed Diaryl Ketone Synthesis by N-C Cleavage: Direct Negishi Cross-Coupling of Primary Amides by Site-Selective N,N-Di-Boc Activation. Org Lett 2016; 18:5872-5875. [PMID: 27934487 DOI: 10.1021/acs.orglett.6b02952] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A general Negishi acylation of primary amides enabled by a combination of site-selective N,N-di-Boc activation and nickel catalysis is reported for the first time. The reaction is promoted by a bench-stable, inexpensive Ni catalyst. The reaction shows excellent functional group compatibility, affording functionalized diaryl ketones by selective N-C cleavage. Most notably, this protocol represents the first amide cross-coupling by direct metal insertion of simple and readily available primary amides. The overall strategy by N,N-di-Boc activation/metal insertion is suitable for a broad range of coupling protocols via acylmetals. Mechanistic experiments suggest high reactivity of N,N-di-Boc activated 1° amides in direct amide C-N cross-couplings.
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Affiliation(s)
- Shicheng Shi
- Department of Chemistry, Rutgers University , 73 Warren Street, Newark, New Jersey 07102, United States
| | - Michal Szostak
- Department of Chemistry, Rutgers University , 73 Warren Street, Newark, New Jersey 07102, United States
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36
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Fu Y, Zhao XL, Hügel H, Huang D, Du Z, Wang K, Hu Y. Magnesium salt promoted tandem nucleophilic addition-Oppenauer oxidation of aldehydes with organozinc reagents. Org Biomol Chem 2016; 14:9720-9724. [PMID: 27714256 DOI: 10.1039/c6ob01668e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A magnesium salt promoted synthesis of ketones via tandem nucleophilic addition-Oppenauer oxidation of aldehydes using organozinc chemistry was demonstrated. Magnesium salts concomitantly generated via magnesium metal mediated organohalide zincation exhibit high efficacy for nucleophilic addition of organozinc reagents to aromatic aldehydes and thereafter Oppenauer oxidation whereby ketones are formed in high to excellent yields.
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Affiliation(s)
- Ying Fu
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Xing Ling Zhao
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Hulmet Hügel
- Health Innovations Research Institute and School of Applied Sciences, RMIT University, Melbourne, 3001, Australia
| | - Danfeng Huang
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Zhengyin Du
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Kehu Wang
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Yulai Hu
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
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37
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Zhou Q, Cobb KM, Tan T, Watson MP. Stereospecific Cross Couplings To Set Benzylic, All-Carbon Quaternary Stereocenters in High Enantiopurity. J Am Chem Soc 2016; 138:12057-60. [PMID: 27610831 PMCID: PMC5034765 DOI: 10.1021/jacs.6b08075] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Asymmetric preparation of all-carbon quaternary stereocenters is an important goal. Despite advances in formation of highly enantioenriched products with quaternary stereocenters proximal to a functional group, methods to install quaternary stereocenters isolated from functional groups are limited. Transition metal catalysis offers a potential solution, but prior cross couplings are limited to allylic substrates or deliver little to no enantiomeric enrichment. We report a stereospecific, nickel-catalyzed Suzuki-Miyaura arylation of tertiary benzylic acetates to deliver products with diaryl and triaryl quaternary stereocenters in high yields and ee's. This reaction employs an inexpensive, air-stable Ni(II) salt and commercially available phosphine ligand to transform tertiary alcohol derivatives, which are easily available in exceptional ee, into valuable products with stereoretention.
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Affiliation(s)
- Qi Zhou
- Department of Chemistry & Biochemistry, University of Delaware , Newark, Delaware 19716, United States
| | - Kelsey M Cobb
- Department of Chemistry & Biochemistry, University of Delaware , Newark, Delaware 19716, United States
| | - Tianyu Tan
- Department of Chemistry & Biochemistry, University of Delaware , Newark, Delaware 19716, United States
| | - Mary P Watson
- Department of Chemistry & Biochemistry, University of Delaware , Newark, Delaware 19716, United States
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38
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Liu C, Wang Q. Arylation, Vinylation, and Alkynylation of Electron-Deficient (Hetero)arenes Using Iodonium Salts. Org Lett 2016; 18:5118-5121. [DOI: 10.1021/acs.orglett.6b02550] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Chuan Liu
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Qiu Wang
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
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39
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Maaliki C, Thiery E, Thibonnet J. Emergence of Copper-Mediated Formation of C-C Bonds. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600540] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Carine Maaliki
- Université François-Rabelais; ISP-UMR 1282; UFR Sciences et Techniques; Parc Grandmont 37000 Tours France
| | - Emilie Thiery
- Université François-Rabelais; ISP-UMR 1282; UFR Sciences et Techniques; Parc Grandmont 37000 Tours France
| | - Jérôme Thibonnet
- Université François-Rabelais; ISP-UMR 1282; UFR Sciences et Techniques; Parc Grandmont 37000 Tours France
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40
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Shi S, Szostak M. Efficient Synthesis of Diaryl Ketones by Nickel-Catalyzed Negishi Cross-Coupling of Amides by Carbon-Nitrogen Bond Cleavage at Room Temperature Accelerated by a Solvent Effect. Chemistry 2016; 22:10420-4. [PMID: 27304392 DOI: 10.1002/chem.201602202] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Indexed: 01/04/2023]
Abstract
The first Negishi cross-coupling of amides for the synthesis of versatile diaryl ketones by selective C-N bond activation under exceedingly mild conditions is reported. The cross-coupling was accomplished with bench-stable, inexpensive precatalyst [Ni(PPh3 )2 Cl2 ] that shows high functional-group tolerance and enables the synthesis of highly functionalized diaryl ketone motifs. The coupling occurred with excellent chemoselectivity favoring the ketone (cf. biaryl) products. Notably, this process represents the mildest conditions for amide N-C bond activation accomplished to date (room temperature, <10 min). Considering the versatile role of polyfunctional biaryl ketone linchpins in modern organic synthesis, availability, and excellent functional-group tolerance of organozinc reagents, this strategy provides a new platform for amide N-C bond/organozinc cross-coupling under mild conditions.
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Affiliation(s)
- Shicheng Shi
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ, 07102, USA
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ, 07102, USA.
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41
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Haas D, Hammann JM, Greiner R, Knochel P. Recent Developments in Negishi Cross-Coupling Reactions. ACS Catal 2016. [DOI: 10.1021/acscatal.5b02718] [Citation(s) in RCA: 264] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Diana Haas
- Ludwig-Maximilians-University, Department of Chemistry and Pharmacy, Butenandtstr. 5-13, 81377 Munich, Germany
| | - Jeffrey M. Hammann
- Ludwig-Maximilians-University, Department of Chemistry and Pharmacy, Butenandtstr. 5-13, 81377 Munich, Germany
| | - Robert Greiner
- Ludwig-Maximilians-University, Department of Chemistry and Pharmacy, Butenandtstr. 5-13, 81377 Munich, Germany
| | - Paul Knochel
- Ludwig-Maximilians-University, Department of Chemistry and Pharmacy, Butenandtstr. 5-13, 81377 Munich, Germany
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42
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Shrestha B, Thapa S, Gurung SK, Pike RAS, Giri R. General Copper-Catalyzed Coupling of Alkyl-, Aryl-, and Alkynylaluminum Reagents with Organohalides. J Org Chem 2016; 81:787-802. [DOI: 10.1021/acs.joc.5b02077] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Bijay Shrestha
- Department of Chemistry & Chemical Biology, The University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Surendra Thapa
- Department of Chemistry & Chemical Biology, The University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Santosh K. Gurung
- Department of Chemistry & Chemical Biology, The University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Ryan A. S. Pike
- Department of Chemistry & Chemical Biology, The University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Ramesh Giri
- Department of Chemistry & Chemical Biology, The University of New Mexico, Albuquerque, New Mexico 87131, United States
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43
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Shrestha B, Giri R. Copper-catalyzed arylation of alkyl halides with arylaluminum reagents. Beilstein J Org Chem 2016; 11:2400-7. [PMID: 26734088 PMCID: PMC4685909 DOI: 10.3762/bjoc.11.261] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 11/12/2015] [Indexed: 12/21/2022] Open
Abstract
We report a Cu-catalyzed coupling between triarylaluminum reagents and alkyl halides to form arylalkanes. The reaction proceeds in the presence of N,N,N',N'-tetramethyl-o-phenylenediamine (NN-1) as a ligand in combination with CuI as a catalyst. This catalyst system enables the coupling of primary alkyl iodides and bromides with electron-neutral and electron-rich triarylaluminum reagents and affords the cross-coupled products in good to excellent yields.
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Affiliation(s)
- Bijay Shrestha
- Department of Chemistry & Chemical Biology, The University of New Mexico, Albuquerque, NM 87131, USA
| | - Ramesh Giri
- Department of Chemistry & Chemical Biology, The University of New Mexico, Albuquerque, NM 87131, USA
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44
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Zemtsov AA, Volodin AD, Levin VV, Struchkova MI, Dilman AD. Coupling of α,α-difluoro-substituted organozinc reagents with 1-bromoalkynes. Beilstein J Org Chem 2015; 11:2145-9. [PMID: 26664635 PMCID: PMC4660974 DOI: 10.3762/bjoc.11.231] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Accepted: 10/20/2015] [Indexed: 12/29/2022] Open
Abstract
α,α-Difluoro-substituted organozinc reagents generated from conventional organozinc compounds and difluorocarbene couple with 1-bromoalkynes affording gem-difluorinated alkynes. The cross-coupling proceeds in the presence of catalytic amounts of copper iodide in dimethylformamide under ligand-free conditions.
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Affiliation(s)
- Artem A Zemtsov
- N. D. Zelinsky Institute of Organic Chemistry, 119991 Moscow, Leninsky prosp. 47, Russian Federation
| | - Alexander D Volodin
- N. D. Zelinsky Institute of Organic Chemistry, 119991 Moscow, Leninsky prosp. 47, Russian Federation ; Higher Chemical College, Russian Academy of Sciences, 125047 Moscow, Miusskaya sq. 9, Russian Federation
| | - Vitalij V Levin
- N. D. Zelinsky Institute of Organic Chemistry, 119991 Moscow, Leninsky prosp. 47, Russian Federation
| | - Marina I Struchkova
- N. D. Zelinsky Institute of Organic Chemistry, 119991 Moscow, Leninsky prosp. 47, Russian Federation
| | - Alexander D Dilman
- N. D. Zelinsky Institute of Organic Chemistry, 119991 Moscow, Leninsky prosp. 47, Russian Federation
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45
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Wang X, Zhu L, Chen S, Xu X, Au CT, Qiu R. Nickel-Catalyzed Direct C (sp3)–H Arylation of Aliphatic Amides with Thiophenes. Org Lett 2015; 17:5228-31. [DOI: 10.1021/acs.orglett.5b02572] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Xie Wang
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha, 410082, P.R. China
| | - Longzhi Zhu
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha, 410082, P.R. China
| | - Sihai Chen
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha, 410082, P.R. China
| | - Xinhua Xu
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha, 410082, P.R. China
| | - Chak-Tong Au
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha, 410082, P.R. China
- Department
of Chemistry, Hong Kong Baptist University, Hong Kong, P.R. China
| | - Renhua Qiu
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha, 410082, P.R. China
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46
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Wang X, Wang S, Xue W, Gong H. Nickel-Catalyzed Reductive Coupling of Aryl Bromides with Tertiary Alkyl Halides. J Am Chem Soc 2015; 137:11562-5. [DOI: 10.1021/jacs.5b06255] [Citation(s) in RCA: 191] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xuan Wang
- School of Materials Science and Engineering and ‡Department of Chemistry, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China
| | - Shulin Wang
- School of Materials Science and Engineering and ‡Department of Chemistry, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China
| | - Weichao Xue
- School of Materials Science and Engineering and ‡Department of Chemistry, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China
| | - Hegui Gong
- School of Materials Science and Engineering and ‡Department of Chemistry, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China
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