1
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Guan YQ, Qiao JF, Liang YF. Nickel-catalysed chelation-assisted reductive defluorinative sulfenylation of trifluoropropionic acid derivatives. Chem Commun (Camb) 2024; 60:2405-2408. [PMID: 38323634 DOI: 10.1039/d3cc06041a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Herein we reported a directing-group assisted strategy for nickel-catalysed reductive defluorinative sulfenylation of trifluoropropionic acid derivatives with disulfides in the presence of Zn, involving triple C-F bond cleavage. This process yielded a diverse array of carbonyl-sulfide di-substituted alkenes in moderate to good yields with good functional group tolerance. Specifically, the reactions exhibited high E-selectivity with E/Z ratio up to >99 : 1.
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Affiliation(s)
- Yu-Qiu Guan
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.
| | - Jia-Fan Qiao
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.
| | - Yu-Feng Liang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.
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2
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Hooe S, Thakur M, Lasarte-Aragonés G, Breger JC, Walper SA, Medintz IL, Ellis GA. Exploration of the In Vitro Violacein Synthetic Pathway with Substrate Analogues. ACS OMEGA 2024; 9:3894-3904. [PMID: 38284012 PMCID: PMC10809250 DOI: 10.1021/acsomega.3c08233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 12/21/2023] [Accepted: 12/26/2023] [Indexed: 01/30/2024]
Abstract
Evolution has gifted enzymes with the ability to synthesize an abundance of small molecules with incredible control over efficiency and selectivity. Central to an enzyme's role is the ability to selectively catalyze reactions in the milieu of chemicals within a cell. However, for chemists it is often desirable to extend the substrate scope of reactions to produce analogue(s) of a desired product and therefore some degree of enzyme promiscuity is often desired. Herein, we examine this dichotomy in the context of the violacein biosynthetic pathway. Importantly, we chose to interrogate this pathway with tryptophan analogues in vitro, to mitigate possible interference from cellular components and endogenous tryptophan. A total of nine tryptophan analogues were screened for by analyzing the substrate promiscuity of the initial enzyme, VioA, and compared to the substrate tryptophan. These results suggested that for VioA, substitutions at either the 2- or 4-position of tryptophan were not viable. The seven analogues that showed successful substrate conversion by VioA were then applied to the five enzyme cascade (VioABEDC) for the production of violacein, where l-tryptophan and 6-fluoro-l-tryptophan were the only substrates which were successfully converted to the corresponding violacein derivative(s). However, many of the other tryptophan analogues did convert to various substituted intermediaries. Overall, our results show substrate promiscuity with the initial enzyme, VioA, but much less for the full pathway. This work demonstrates the complexity involved when attempting to analyze substrate analogues within multienzymatic cascades, where each enzyme involved within the cascade possesses its own inherent promiscuity, which must be compatible with the remaining enzymes in the cascade for successful formation of a desired product.
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Affiliation(s)
- Shelby
L. Hooe
- National
Research Council, Washington, D.C. 20001, United States
- Center
for Bio/Molecular Science and Engineering Code 6900, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
| | - Meghna Thakur
- Center
for Bio/Molecular Science and Engineering Code 6900, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
- College
of Science, George Mason University, Fairfax, Virginia 22030, United States
| | - Guillermo Lasarte-Aragonés
- Center
for Bio/Molecular Science and Engineering Code 6900, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
- College
of Science, George Mason University, Fairfax, Virginia 22030, United States
| | - Joyce C. Breger
- Center
for Bio/Molecular Science and Engineering Code 6900, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
| | - Scott A. Walper
- Center
for Bio/Molecular Science and Engineering Code 6900, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
| | - Igor L. Medintz
- Center
for Bio/Molecular Science and Engineering Code 6900, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
| | - Gregory A. Ellis
- Center
for Bio/Molecular Science and Engineering Code 6900, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
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3
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Saito Y, Kikuchi J, Wang C, Yoshikai N. Site-Selective C-H Alkenylation of N-Heteroarenes by Ligand-Directed Co/Al and Co/Mg Cooperative Catalysis. Angew Chem Int Ed Engl 2023; 62:e202301006. [PMID: 36855924 DOI: 10.1002/anie.202301006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/18/2023] [Accepted: 02/27/2023] [Indexed: 03/02/2023]
Abstract
We report herein the design and development of Co/Al and Co/Mg bimetallic catalysts, supported by a phosphine/secondary phosphine oxide (PSPO) bifunctional ligand, for the site-selective C-H alkenylation of nitrogen-containing heteroarenes with alkynes. These catalysts enable the alkenylation of pyridine, pyridone, and imidazo[1,2-a]pyridine derivatives at the C-H site proximal to the Lewis basic nitrogen or oxygen atom, which represents a selectivity profile distinct from that of the previously developed cobalt-diphosphine/aluminum catalyst. The alkenylated products were obtained in moderate to good yields using various heterocycles and differently substituted internal alkynes. Kinetic isotope effect experiments suggest the irreversibility of the C-H activation step, the relevance of which to the rate-limiting step depends on the reaction conditions. Density functional theory calculations indicate that ligand-to-ligand hydrogen transfer is the common mechanism of C-H activation.
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Affiliation(s)
- Yuri Saito
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Sendai, 980-8578, Japan
| | - Jun Kikuchi
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Sendai, 980-8578, Japan
| | - Chen Wang
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemical Process, Shaoxing University, Shaoxing, 312000, P. R. China
| | - Naohiko Yoshikai
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Sendai, 980-8578, Japan
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4
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Zhang J, Liu J, Wang X, Yang X, Ma Y, Fang R, Zhao Q, Szostak M. Ruthenium-Catalyzed C–F Bond Arylation of Polyfluoroarenes: Polyfluorinated Biaryls by Integrated C–F/C–H Functionalization. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jin Zhang
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Jiale Liu
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Xiaogang Wang
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Xinkan Yang
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Yangmin Ma
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Ran Fang
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Qun Zhao
- 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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5
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Zhang JQ, Hu D, Wang J, Ni B, Ren H. Bimetallic Metal-Organic Coordination Polymers Facilitated the Selective C-F Cleavage of Polyfluoroarenes. Org Lett 2022; 24:7905-7911. [PMID: 36269221 DOI: 10.1021/acs.orglett.2c02918] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Selective C-F bond cleavage of polyfluoroarenes has attracted tremendous interest due to its promising applications in introducing fluorinated building blocks into organic molecules. However, it remains a challenge to achieve highly site-selective C-F bond cleavage because of the intrinsic inertness of the C-F bond and the difficulty in distinguishing specific C-F bonds on the aromatic ring. Herein we report an efficient nucleophilic aromatic substitution (SNAr) reaction of polyfluoroarenes with Grignard reagents that employs MnFe-based bimetallic metal-organic coordination polymers (MOCPs) as recyclable and reusable heterogeneous catalysts. Significantly, in this reaction, the prepared MOCP (Mn-Fe) catalyst exhibited excellent activity in selective C-F bond cleavage and afforded a series of functionalized polyfluoroarenes in moderate to excellent yields (up to 96%). This work highlights the potential of MOCP catalysts to serve as a tunable platform in Lewis acid catalysis.
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Affiliation(s)
- Jun-Qi Zhang
- Advanced Research Institute and Department of Chemistry, Taizhou University, Jiaojiang 318000, China
| | - Dandan Hu
- Advanced Research Institute and Department of Chemistry, Taizhou University, Jiaojiang 318000, China
| | - Jiali Wang
- Advanced Research Institute and Department of Chemistry, Taizhou University, Jiaojiang 318000, China
| | - Bukuo Ni
- Department of Chemistry, Texas A&M University-Commerce, Commerce, Texas 75429-3011, United States
| | - Hongjun Ren
- Advanced Research Institute and Department of Chemistry, Taizhou University, Jiaojiang 318000, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453000, China
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6
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Li Y, Zhu J. Mechanistic Insight into the Ni-Catalyzed Kumada Cross-Coupling: Alkylmagnesium Halide Promotes C-F Bond Activation and Electron-Deficient Metal Center Slows Down β-H Elimination. J Org Chem 2022; 87:8902-8909. [PMID: 35762620 DOI: 10.1021/acs.joc.2c00586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Ni-catalyzed Kumada-Tamao-Corriu (KTC) cross-coupling between aryl fluorides and alkyl Grignard reagents has been used to achieve a highly selective Csp2-Csp3 bond construction via the carbon-fluorine (C-F) bond activation. However, the detailed mechanism of this groundbreaking KTC reaction remains unclear. Herein, we perform a series of analyses by density functional theory (DFT) calculations in order to understand the reaction mechanisms for the selective activation of a highly inert C-F bond by Ni catalysts with bidentate phosphorus ligands. An alternative mechanism for Ni/Mg bimetallic cooperation C-F bond cleavage instead of a traditional oxidative addition was proposed. The push-pull interaction in the transition state provided by the Ni center and the Lewis acid of the Mg cation smoothly breaks the C-F bond, supported by the significantly decreased activation energy from 30.9 to 4.6 kcal mol-1 and principal interacting orbital analysis. Owing to the elevated lowest unoccupied molecular orbital energy level and the electron-deficient metal center caused by the bidentate phosphorus ligand, the β-H elimination could be impeded, increasing the selectivity of KTC cross-coupling. Our DFT results rationally explain the experimental observations, which will be helpful for further development of KTC cross-coupling.
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Affiliation(s)
- Yuanyuan Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Jun Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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7
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Duan X, Sun R, Tang J, Li S, Yang X, Zheng X, Li R, Chen H, Fu H, Yuan M. Facile Synthesis of 2-Methylnicotinonitrile through Degenerate Ring Transformation of Pyridinium Salts. J Org Chem 2022; 87:7975-7988. [PMID: 35658477 DOI: 10.1021/acs.joc.2c00614] [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
Nucleophilic recyclization of pyridinium salts involving a CCN interchange ring transformation for the synthesis of 2-methylnicotinonitrile derivatives was herein developed. 3-Aminocrotononitrile (3-ACN) produced in situ from CH3CN acted as a C-nucleophile, as well as the source of CH3 and CN groups, which was supported by isotope-labeling and control experiments.
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Affiliation(s)
- Xiaoxia Duan
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Rui Sun
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Juan Tang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Shun Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Xiao Yang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Xueli Zheng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Ruixiang Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Hua Chen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Haiyan Fu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Maolin Yuan
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
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8
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Fan F, Zhao L, Luo M, Zeng X. Chromium-Catalyzed Selective Cross-Electrophile Coupling between Unactivated C(aryl)–F and C(aryl)–O Bonds. Organometallics 2022. [DOI: 10.1021/acs.organomet.1c00664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fei Fan
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Lixing Zhao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Meiming Luo
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaoming Zeng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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9
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Das A, Chatani N. The Directing Group: A Tool for Efficient and Selective C–F Bond Activation. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03896] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Amrita Das
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Naoto Chatani
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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10
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Buono F, Nguyen T, Qu B, Wu H, Haddad N. Recent Advances in Nonprecious Metal Catalysis. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.1c00053] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Frederic Buono
- Chemical Development US, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Thach Nguyen
- Chemical Development US, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Bo Qu
- Chemical Development US, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Hao Wu
- Chemical Development US, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Nizar Haddad
- Chemical Development US, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
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11
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Fu L, Chen Q, Nishihara Y. Recent Advances in Transition-metal-catalyzed C-C Bond Formation via C(sp 2 )-F Bond Cleavage. CHEM REC 2021; 21:3394-3410. [PMID: 33852203 DOI: 10.1002/tcr.202100053] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/29/2021] [Accepted: 03/29/2021] [Indexed: 12/13/2022]
Abstract
The activation of a carbon-fluorine bond is one of the most challenging topics in modern synthetic organic chemistry due to their low reactivity compared to other carbon-halogen bonds. In this review, we present the recent developments since 2015 on cross-coupling reactions that form C-C bonds via cleavage of C(sp2 )-F bonds. Not only the conventional activation of C(sp2 )-F bonds, but also decarbonylative or carbonyl-retentive cleavage of C(acyl)-F bonds will be introduced. This paper mainly describes new protocols for the formation of C(sp2 )-C(sp3 ), C(sp2 )-C(sp2 ), and C(sp2 )-C(sp) bonds via transition-metal-catalyzed cleavage of C(sp2 )-F bonds.
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Affiliation(s)
- Liyan Fu
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
| | - Qiang Chen
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
| | - Yasushi Nishihara
- Research Institute for Interdisciplinary Science, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
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12
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Tong X, Luo SS, Shen H, Zhang S, Cao T, Luo YP, Huang LL, Ma XT, Liu XW. Nickel-catalyzed defluorinative alkylation of C(sp 2)–F bonds. Org Chem Front 2021. [DOI: 10.1039/d1qo00549a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A nickel-catalyzed defluorinative alkylation of unactivated C(sp2)–F electrophiles using commercially available trialkylaluminum reagents, thus forming the C(sp2)–C(sp3) bonds is reported.
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Affiliation(s)
- Xue Tong
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Si-Si Luo
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Hua Shen
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Shu Zhang
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Tian Cao
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Yi-Peng Luo
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Long-Ling Huang
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Xi-Tao Ma
- Hospital of Chengdu University of Traditional Chinese Medicine
- Chengdu 610072
- China
| | - Xiang-Wei Liu
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
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13
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Hell Z, Juhász K, Magyar Á. Transition-Metal-Catalyzed Cross-Coupling Reactions of Grignard Reagents. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1705986] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
AbstractTransition-metal-catalyzed cross-coupling of organohalides, ethers, sulfides, amines, and alcohols (and derivatives thereof) with Grignard reagents, known as the Kumada–Tamao–Corriu reaction, can be used to prepare important intermediates in the synthesis of numerous biologically active compounds. The most frequently used transition metals are nickel, palladium, and iron, but there are several examples for cross-coupling reactions catalyzed by copper, cobalt, manganese, chromium, etc. salts and complexes. The aim of this review is to summarize the most important transition-metal-catalyzed cross-coupling reactions realized in the period 2000 to 2020.1 Introduction2 Nickel Catalysis3 Palladium Catalysis4 Iron Catalysis5 Catalysis by Other Transition Metals5.1 Cobalt Catalysis5.2 Copper Catalysis5.3 Manganese Catalysis5.4 Chromium Catalysis6 Conclusion
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