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Xie F, Dong S, Liu J, Yu M, Ren D, Zhao J, Liu X. Enantio- and Diastereoselective Copper-Catalyzed Borylative Coupling of Styrenes and Azadienes. Org Lett 2024; 26:5335-5340. [PMID: 38885466 DOI: 10.1021/acs.orglett.4c01722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
Here we disclose a CuB-catalyzed reaction between aurone-derived α,β-unsaturated imines and styrenes to produce 2-substituted benzofuran derivatives bearing both the γ-boryl functionality and α,β-unsymmetric stereogenic centers. The reaction represents the first transition-metal-catalyzed unsymmetric 1,4-Michael additions of azadienes, which would enrich the arsenal of CuB catalysis in organic synthesis. In addition, the synthetically versatile boron-alkylated products can be elaborated by chemical transformations to useful optically active benzofuran heterocycles.
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Affiliation(s)
- Fang Xie
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
| | - Shijie Dong
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
| | - Jiayi Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
| | - Miao Yu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
| | - Deyue Ren
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
| | - Jie Zhao
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
| | - Xiaodan Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
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Chen S, Su X, Dong Y, Liu J, Yang F, Guo H, Zhang C. Cu-Catalyzed Divergent Transformations of Allenylethylene Carbonates with Diboron Reagents. Org Lett 2024; 26:960-965. [PMID: 38240566 DOI: 10.1021/acs.orglett.3c04316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Divergent transformations of allenylethylene carbonates with diboron reagents catalyzed by copper are disclosed. By using CuCl/IPr·HCl as the catalyst, the allenylethylene carbonates react with B2hex2 to afford 2,4-dien-1-ols as the product in the presence of Cs2CO3 as the base, iPrOH as the additive, and 1,4-dioxane as the solvent. And they react with B2pin2 to form boronic half acids in the presence of NaOtBu as the base, water as the additive, and THF as the solvent. The reactions afford corresponding products in good stereoselectivities and yields, and further derivatizations of boronic half acids and study of the mechanism are also demonstrated.
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Affiliation(s)
- Sijie Chen
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, P. R. China
| | - Xiaojie Su
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, P. R. China
| | - Yujie Dong
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, P. R. China
| | - Jun Liu
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, P. R. China
| | - Fazhou Yang
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, P. R. China
| | - Hongchao Guo
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, P. R. China
| | - Cheng Zhang
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, P. R. China
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3
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Li B, Liang H, Vignesh A, Zhou X, Liu Y, Ke Z. Updated Progress of the Copper-Catalyzed Borylative Functionalization of Unsaturated Molecules. Molecules 2023; 28:molecules28052252. [PMID: 36903497 PMCID: PMC10004982 DOI: 10.3390/molecules28052252] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 02/22/2023] [Accepted: 02/22/2023] [Indexed: 03/04/2023] Open
Abstract
Borylation has become a powerful method to synthesize organoboranes as versatile building blocks in organic synthesis, medicinal chemistry, and materials science. Copper-promoted borylation reactions are extremely attractive due to the low cost and non-toxicity of the copper catalyst, mild reaction conditions, good functional group tolerance, and convenience in chiral induction. In this review, we mainly updated recent advances (from 2020 to 2022) in the synthetic transformations in C=C/C≡C multiple bonds, and C=E multiple bonds mediated by copper boryl systems.
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Affiliation(s)
- Bingru Li
- School of Materials Science and Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou 510275, China
| | - Huayu Liang
- School of Materials Science and Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou 510275, China
| | - Arumugam Vignesh
- School of Materials Science and Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou 510275, China
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
- Correspondence: (A.V.); (Y.L.); (Z.K.)
| | - Xiaoyu Zhou
- School of Materials Science and Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou 510275, China
| | - Yan Liu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou 510275, China
- Correspondence: (A.V.); (Y.L.); (Z.K.)
| | - Zhuofeng Ke
- School of Materials Science and Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou 510275, China
- Correspondence: (A.V.); (Y.L.); (Z.K.)
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Deng XH, Jiang JX, Jiang Q, Yang T, Chen B, He L, Chu WD, He CY, Liu QZ. CuH-Catalyzed Enantioselective Reductive Coupling of 1,3-Dienes and Trifluoromethyl Ketoimines or α-Iminoacetates. Org Lett 2022; 24:4586-4591. [PMID: 35714047 DOI: 10.1021/acs.orglett.2c01683] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The intermolecular addition of allylic copper species generated from diene and copper hydride remains elusive. Herein copper hydride catalyzed asymmetric cross reductive coupling of conjugated dienes and ketoimines including trifluoromethyl ketoimines and α-iminoacetates was first achieved using chiral Ph-BPE as the ligand, providing rapid access to structurally and optically enriched homoallylic amines containing two vicinal stereogenic centers with up to 95% yield, 99% ee, and 11:1 diastereoselectivities.
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Affiliation(s)
- Xue-Hua Deng
- Chemical Synthesis and Pollution Control Key Laboratory of Si-chuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
| | - Jia-Xi Jiang
- Chemical Synthesis and Pollution Control Key Laboratory of Si-chuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
| | - Qin Jiang
- Chemical Synthesis and Pollution Control Key Laboratory of Si-chuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
| | - Ting Yang
- Chemical Synthesis and Pollution Control Key Laboratory of Si-chuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
| | - Bo Chen
- Chemical Synthesis and Pollution Control Key Laboratory of Si-chuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
| | - Long He
- College of Chemistry and Materials Engineering, Guiyang University, Guiyang 550005, China
| | - Wen-Dao Chu
- Chemical Synthesis and Pollution Control Key Laboratory of Si-chuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
| | - Cheng-Yu He
- Chemical Synthesis and Pollution Control Key Laboratory of Si-chuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
| | - Quan-Zhong Liu
- Chemical Synthesis and Pollution Control Key Laboratory of Si-chuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
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Yuan Y, Wu FP, Wu XF. Copper-catalyzed borofunctionalization of styrenes with B 2pin 2 and CO. Chem Sci 2021; 12:13777-13781. [PMID: 34760162 PMCID: PMC8549821 DOI: 10.1039/d1sc04774d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 09/22/2021] [Indexed: 11/25/2022] Open
Abstract
The construction of structurally complexed and high-value chemical molecules from simple and readily available feedstocks is a long-standing challenge to chemists. Here, we describe a copper-catalyzed borofunctionalization of styrenes with B2pin2 and carbon monoxide. A set of new sodium cyclic borates were obtained with NaOtBu as the base. These unique sodium cyclic borates can be easily converted into a variety of multifunctional β-boryl vinyl esters, boryl carbonates, β-boryl aldehydes, and boryl vinyl ether. In addition, the procedure also features good functional group tolerance and utilizes CO as the C1 source. A new copper-catalyzed borofunctionalization of styrenes with B2pin2 and carbon monoxide has been developed.![]()
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Affiliation(s)
- Yang Yuan
- Leibniz-Institut für Katalyse e.V. Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Fu-Peng Wu
- Leibniz-Institut für Katalyse e.V. Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Xiao-Feng Wu
- Leibniz-Institut für Katalyse e.V. Albert-Einstein-Straße 29a 18059 Rostock Germany .,Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian Liaoning 116023 China
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Ozawa Y, Endo K, Ito H. Regio- and Stereoselective Synthesis of Multi-Alkylated Allylic Boronates through Three-Component Coupling Reactions between Allenes, Alkyl Halides, and a Diboron Reagent. J Am Chem Soc 2021; 143:13865-13877. [PMID: 34424698 DOI: 10.1021/jacs.1c06538] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Multisubstituted allylic boronates are attractive and valuable precursors for the rapid and stereoselective construction of densely substituted carbon skeletons. Herein, we report the first synthetic approach for differentially 2,3,3-trialkyl-substituted allylic boronates that contain a stereodefined tetrasubstituted alkene structure. Copper(I)-catalyzed regio- and stereoselective three-component coupling reactions between gem-dialkylallenes, alkyl halides, and a diboron reagent afforded sterically congested allylic boronates. The allylboration of aldehydes diastereoselectively furnished the corresponding homoallylic alcohols that bear a quaternary carbon. A computational study revealed that the selectivity-determining mechanism was correlated to the coordination of a boryl copper(I) species to the allene substrate as well as the borylcupration step.
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Affiliation(s)
- Yu Ozawa
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Kohei Endo
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Hajime Ito
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
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