1
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Li X, Liu J, Song R, Luo X, Luo H. Rhodium(III)-Catalyzed Switchable β-C(sp 2)-H Alkenylation and Alkylation of Acyclic Enamides with Allyl Alcohols. Org Lett 2024; 26:3673-3678. [PMID: 38639408 DOI: 10.1021/acs.orglett.4c01234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Herein, rhodium(III)-catalyzed β-C(sp2)-H alkenylation and alkylation of enamides are presented using readily accessible allylic alcohols by switching the reaction conditions. This tunable transformation has been applied to a wide range of substrates and typically proceeded with excellent regioselectivity and stereoselectivity as well as with good functional group tolerance. The catalytic system offers an efficient approach for synthesizing various functionalized enamides bearing N-(2Z,4E)-butadiene and (Z)-β-C(sp2)-H alkylated enamides. In addition, mechanistic experiments suggest that Rh(III)-catalyzed C-H activation is not related to the critical step.
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Affiliation(s)
- Xiaolan Li
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Jie Liu
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Ruixin Song
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Xuzhong Luo
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Haiqing Luo
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
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2
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Qiao XX, Zhao SN, Li Q, Ma T, Li G, He Y, Zhao XJ. Asymmetric Organocatalyzed Cyclization Cascade Reactions of 3,3-Difluoro-2-aryl-3 H-indoles and Enamides. Org Lett 2024; 26:1154-1159. [PMID: 38323790 DOI: 10.1021/acs.orglett.3c04162] [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
The direct functionalization of β-C(sp2)-H bonds in enamides has garnered increasing attention within the realm of organic synthesis. However, these remarkable advancements are predominantly dependent on transition metals; limited success has been achieved via organocatalytic catalysis. Herein, we report a CPA-catalyzed β-C(sp2)-H functionalization of enamides cascade intramolecular cyclization to synthesize the chiral dihydropyrimido[1,6-a]indoles bearing gem-difluoromethylene. Moreover, this methodology enables the synthesis of diverse chiral dihydropyrimido[1,6-a]indoles with outstanding enantioselectivities in moderate to high yields.
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Affiliation(s)
- Xiu-Xiu Qiao
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, School of Ethnic Medicine, Yunnan Minzu University Kunming, 650500, China
| | - Shi-Na Zhao
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, School of Ethnic Medicine, Yunnan Minzu University Kunming, 650500, China
| | - Qian Li
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, School of Ethnic Medicine, Yunnan Minzu University Kunming, 650500, China
| | - Tao Ma
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, School of Ethnic Medicine, Yunnan Minzu University Kunming, 650500, China
| | - Ganpeng Li
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, School of Ethnic Medicine, Yunnan Minzu University Kunming, 650500, China
| | - Yonghui He
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, School of Ethnic Medicine, Yunnan Minzu University Kunming, 650500, China
| | - Xiao-Jing Zhao
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, School of Ethnic Medicine, Yunnan Minzu University Kunming, 650500, China
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3
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Li X, Luo H, Song R, Zhang Y, Gong X, Cai H, Luo X. Selective Cross-Dehydrogenative Coupling of Various Acyclic Enamides with Heteroarenes via Rh(III)-Catalyzed C-H Activation. Org Lett 2023; 25:5262-5267. [PMID: 37417807 DOI: 10.1021/acs.orglett.3c01786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/08/2023]
Abstract
The developed methodology describes an efficient Rh(III)-catalyzed oxidative C-H/C-H cross-coupling between acyclic enamides and heteroarenes. This cross dehydrogenative coupling (CDC) reaction offers advantages, including excellent regioselectivity and stereoselectivity, good functional group compatibility, and a broad substrate scope. Mechanistically, Rh(III)-catalyzed β-C(sp2)-H activation of acyclic enamides is proposed to be the critical step.
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Affiliation(s)
- Xiaolan Li
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Haiqing Luo
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Ruixin Song
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Yuting Zhang
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Xian Gong
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Hu Cai
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Xuzhong Luo
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
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4
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Lu XY, Wang JC, Sun XM, Gao MT, Ying WJ, Ge MY, Wei ZH, Liu Z, Chen XK. Photoredox/Nickel Dual-Catalyzed Stereoselective Synthesis of Distal Cyano-Substituted Enamides. J Org Chem 2023; 88:513-524. [PMID: 36545950 DOI: 10.1021/acs.joc.2c02497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Herein, the efficient photoredox/nickel dual-catalyzed cyanoalkylation reaction of enamides is illustrated. A wide scope of enamides and cycloketone oxime esters was well-tolerated, affording the synthetically versatile and geometrically defined β-cyanoalkylated enamide scaffolds. The synthetic practicality of this protocol was revealed by gram-scale reactions, further transformations of enamides, and late-stage modifications of biologically active molecules.
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Affiliation(s)
- Xiao-Yu Lu
- School of Materials and Chemical Engineering, Chuzhou University, Chuzhou 239000, China.,School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, China
| | - Jun-Chao Wang
- School of Materials and Chemical Engineering, Chuzhou University, Chuzhou 239000, China
| | - Xiao-Mei Sun
- School of Materials and Chemical Engineering, Chuzhou University, Chuzhou 239000, China
| | - Meng-Ting Gao
- School of Materials and Chemical Engineering, Chuzhou University, Chuzhou 239000, China
| | - Weng-Jing Ying
- School of Materials and Chemical Engineering, Chuzhou University, Chuzhou 239000, China
| | - Meng-Yuan Ge
- School of Materials and Chemical Engineering, Chuzhou University, Chuzhou 239000, China
| | - Zheng-Huan Wei
- School of Materials and Chemical Engineering, Chuzhou University, Chuzhou 239000, China
| | - Zi Liu
- School of Materials and Chemical Engineering, Chuzhou University, Chuzhou 239000, China
| | - Xing-Ke Chen
- School of Materials and Chemical Engineering, Chuzhou University, Chuzhou 239000, China
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5
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Lu MZ, Goh J, Maraswami M, Jia Z, Tian JS, Loh TP. Recent Advances in Alkenyl sp 2 C-H and C-F Bond Functionalizations: Scope, Mechanism, and Applications. Chem Rev 2022; 122:17479-17646. [PMID: 36240299 DOI: 10.1021/acs.chemrev.2c00032] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Alkenes and their derivatives are featured widely in a variety of natural products, pharmaceuticals, and advanced materials. Significant efforts have been made toward the development of new and practical methods to access this important class of compounds by selectively activating the alkenyl C(sp2)-H bonds in recent years. In this comprehensive review, we describe the state-of-the-art strategies for the direct functionalization of alkenyl sp2 C-H and C-F bonds until June 2022. Moreover, metal-free, photoredox, and electrochemical strategies are also covered. For clarity, this review has been divided into two parts; the first part focuses on currently available alkenyl sp2 C-H functionalization methods using different alkene derivatives as the starting materials, and the second part describes the alkenyl sp2 C-F bond functionalization using easily accessible gem-difluoroalkenes as the starting material. This review includes the scope, limitations, mechanistic studies, stereoselective control (using directing groups as well as metal-migration strategies), and their applications to complex molecule synthesis where appropriate. Overall, this comprehensive review aims to document the considerable advancements, current status, and emerging work by critically summarizing the contributions of researchers working in this fascinating area and is expected to stimulate novel, innovative, and broadly applicable strategies for alkenyl sp2 C-H and C-F bond functionalizations in the coming years.
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Affiliation(s)
- Ming-Zhu Lu
- College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhengzhou 450001, China.,School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Jeffrey Goh
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Manikantha Maraswami
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Zhenhua Jia
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jie-Sheng Tian
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Teck-Peng Loh
- College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhengzhou 450001, China.,School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore.,Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
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6
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Doba T, Shang R, Nakamura E. Iron-Catalyzed C–H Activation for Heterocoupling and Copolymerization of Thiophenes with Enamines. J Am Chem Soc 2022; 144:21692-21701. [DOI: 10.1021/jacs.2c09470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Takahiro Doba
- Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Rui Shang
- Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Eiichi Nakamura
- Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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7
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Gao HJ, Miao YH, Jia SK, Li N, Xu LP, Wang W, Wang MC, Mei GJ. Azo group-enabled metal- and oxidant-free alkenyl C–H thiolation: Access to stereodefined tetrasubstituted acyclic olefins. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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8
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Bao L, Liu C, Li W, Yu J, Wang M, Zhang Y. Electrochemical Synthesis of Polysubstituted Oxazoles from Ketones and Acetonitrile. Org Lett 2022; 24:5762-5766. [PMID: 35912587 DOI: 10.1021/acs.orglett.2c02252] [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
Herein we report an electrochemical strategy for the construction of polysubstituted oxazoles from easily available ketones and acetonitrile under room temperature. The method shows high efficiency, a broad substrate scope, and requires no external chemical oxidant. Mechanistic investigations suggest that the reaction proceeds through a Ritter-type reaction/oxidative cyclization using acetonitrile as the reactant and solvent. X-ray crystallographic analysis reveals that the reaction involves the attack of acetonitrile on the carbonyl carbon instead of the α-carbon.
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Affiliation(s)
- Liang Bao
- Department of Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Chen Liu
- Department of Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Wenyi Li
- Department of Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Jiage Yu
- Department of Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Min Wang
- Department of Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yunfei Zhang
- Department of Chemistry, China Agricultural University, Beijing 100193, P. R. China
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9
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Li W, Shi R, Zhang X, Chen S, Wang Y, Wang M, Yang B, Li J, Xu XM. Different Lewis Acid Promotor-Steered Highly Regioselective Phosphorylation of Tertiary Enamides. J Org Chem 2022; 87:9769-9781. [PMID: 35866754 DOI: 10.1021/acs.joc.2c00829] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Different Lewis acid promotor-steered highly regioselective phosphorylation of tertiary enamides with diverse H-phosphonates or H-phosphine oxides was developed. Under the catalysis of iron salt, the phosphonyl group was introduced into the α-position of tertiary enamides, affording various α-phosphorylated amides in high efficiency. On the other hand, the β-phosphorylated tertiary enamides were efficiently obtained as the products in the presence of manganese(III) acetylacetonate.
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Affiliation(s)
- Wenzhong Li
- College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
| | - Ran Shi
- College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
| | - Xuesi Zhang
- College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
| | - Sen Chen
- College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
| | - Yu Wang
- College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
| | - Mengqi Wang
- College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
| | - Bin Yang
- College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
| | - Jiazhu Li
- College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
| | - Xin-Ming Xu
- College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
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10
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Xu XM, Li W, Li Q, Chen S, Zhang X, Yang B, Wang WL. Manganese(III)-promoted highly stereoselective phosphorylation of acyclic tertiary enamides to synthesize E-selective β-phosphoryl enamides. Org Biomol Chem 2022; 20:5566-5574. [PMID: 35792054 DOI: 10.1039/d2ob00980c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A concise manganese(III)-promoted stereoselective β-phosphorylation of acyclic tertiary enamides and diverse H-phosphine oxides was achieved. This reaction proceeds with absolute E-selectivity in contrast to Z-selectivity obtained in other previous works and affords various E-selective β-phosphorylated tertiary enamides in high efficiency. To the best of our knowledge, this is the first case of E-selective β-phosphorylation of tertiary enamides through C-H functionalization. In addition, the method features broad substrate scope, good functional group compatibility and efficient scale-up.
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Affiliation(s)
- Xin-Ming Xu
- College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China.
| | - Wenzhong Li
- College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China.
| | - Qiwei Li
- College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China.
| | - Sen Chen
- College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China.
| | - Xuesi Zhang
- College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China.
| | - Bin Yang
- College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China.
| | - Wei-Li Wang
- School of Chemistry and Material Science, Ludong University, Yantai 264005, China
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11
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Li X, Zhang X, Zhang F, Luo X, Luo H. Construction of Pyridine Ring Systems by Mn(OAc)
2
‐Promoted Formal Dehydrative Dehydroaromatizing [4+2] Cycloaddition of Enamides with Maleimides. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200251] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xiaolan Li
- Department of Chemistry & Chemical Engineering Gannan Normal University Ganzhou Jiangxi, 341000 People's Republic of China
| | - Xiuqi Zhang
- Department of Chemistry & Chemical Engineering Gannan Normal University Ganzhou Jiangxi, 341000 People's Republic of China
| | - Fukuan Zhang
- Department of Chemistry & Chemical Engineering Gannan Normal University Ganzhou Jiangxi, 341000 People's Republic of China
| | - Xuzhong Luo
- Department of Chemistry & Chemical Engineering Gannan Normal University Ganzhou Jiangxi, 341000 People's Republic of China
| | - Haiqing Luo
- Department of Chemistry & Chemical Engineering Gannan Normal University Ganzhou Jiangxi, 341000 People's Republic of China
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12
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Su XD, Zhang BB, Liu Q, Cheng JT, Wang ZX, Chen XY. Additive-Free, Visible-Light-Enabled Decarboxylative Alkylation of Enamides. Org Lett 2021; 23:8262-8266. [PMID: 34636566 DOI: 10.1021/acs.orglett.1c03006] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Enamides are versatile precursors for synthesizing bioactive compounds. As their alkylations often require perstoichiometric amounts of oxidants, transition metals, or photocatalysts, we herein report a simple alternative for their alkylations by just using visible light to irradiate the mixture of the readily available N-hydroxyphthalimide esters and enamides without an additive. The reaction involves the photoactivation of a π-π stacking EDA complex between the substrates.
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Affiliation(s)
- Xiao-Di Su
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bei-Bei Zhang
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qiang Liu
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jin-Tang Cheng
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences Beijing, 100700, China
| | - Zhi-Xiang Wang
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiang-Yu Chen
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
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13
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Gu Q, Wang X, Liu X, Wu G, Xie Y, Shao Y, Zhao Y, Zeng X. Electrochemical sulfonylation of enamides with sodium sulfinates to access β-amidovinyl sulfones. Org Biomol Chem 2021; 19:8295-8300. [PMID: 34519742 DOI: 10.1039/d1ob01485d] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The electrochemical sulfonylation of enamides with sodium sulfinates was developed in an undivided cell in constant current mode, leading to the formation of β-amidovinyl sulfones in moderate to good yields. The catalyst-, electrolyte- and oxidant-free protocol features good functional group tolerance and employs electric current as a green oxidant. Mechanistic insights into the reaction indicate that the reaction may proceed via a radical mechanism.
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Affiliation(s)
- Qingyun Gu
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province 226001, People's Republic of China.
| | - Xin Wang
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province 226001, People's Republic of China.
| | - Xinyi Liu
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province 226001, People's Republic of China.
| | - Guixia Wu
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province 226001, People's Republic of China.
| | - Yushan Xie
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province 226001, People's Republic of China.
| | - Yu Shao
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province 226001, People's Republic of China.
| | - Yu Zhao
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province 226001, People's Republic of China.
| | - Xiaobao Zeng
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province 226001, People's Republic of China.
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14
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Jin L, Zhang P, Li Y, Yu X, Shi BF. Atroposelective Synthesis of Conjugated Diene-Based Axially Chiral Styrenes via Pd(II)-Catalyzed Thioether-Directed Alkenyl C-H Olefination. J Am Chem Soc 2021; 143:12335-12344. [PMID: 34340309 DOI: 10.1021/jacs.1c06236] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The efficient stereoselective synthesis of conjugated dienes, especially those with axial chirality, remains a great challenge. Herein, we report the highly atroposelective synthesis of axially chiral styrenes with a conjugated 1,3-diene scaffold via a Pd(II)-catalyzed thioether-directed alkenyl C-H olefination strategy. This strategy features easy operation, mild reaction conditions, high functional group tolerance (69 examples), complete Z-selectivity, and excellent enantioselectivities (up to 99% ee). Notably, the highly enantioselective synthesis of atropisomers with two stereogenic axes were also achieved using this strategy (up to 99% ee and 97:3 dr). Moreover, the reaction could be scaled up, and the resulting axially chiral styrenes could be easily oxidized into chiral sulfoxide derivatives with high diastereoselectivities, which showed great promise as a new type of sulfur-olefin ligand.
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Affiliation(s)
- Liang Jin
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Peng Zhang
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Ya Li
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Xin Yu
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Bing-Feng Shi
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China.,College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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15
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Access to multi-functionalized oxazolines via silver-catalyzed heteroannulation of enamides with sulfoxonium ylides. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.10.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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16
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Gu Q, Wang Q, Dai W, Wang X, Ban Y, Liu T, Zhao Y, Zhang Y, Ling Y, Zeng X. K 2S 2O 8-mediated regio- and stereo-selective thiocyanation of enamides with NH 4SCN. Org Biomol Chem 2021; 19:2512-2516. [PMID: 33662088 DOI: 10.1039/d1ob00156f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A direct and straightforward thiocyanation of enamides with NH4SCN under metal-free conditions has been accomplished. A variety of (E)-β-thiocyanoenamides are readily produced in a regio- and stereo-selective manner. The protocol features mild reaction conditions, good functional group tolerance and operational simplicity. The potential utility of this strategy was further demonstrated by transformation of thiocyanate into thiotetrazole-containing compounds and a Pd-catalyzed cross-coupling reaction to afford six- or seven-membered sulfur-containing heterocycles. Mechanistic insights into the reaction indicate that the reaction may proceed via a radical mechanism.
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Affiliation(s)
- Qingyun Gu
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province 226001, People's Republic of China.
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17
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Wang RH, Li JF, Li Y, Qi SL, Zhang T, Luan YX, Ye M. Selective C(sp3)–H Cleavage of Enamides for Synthesis of 2-Pyridones via Ligand-Enabled Ni–Al Bimetallic Catalysis. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04585] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Rong-Hua Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jiang-Fei Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yue Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Shao-Long Qi
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Tao Zhang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yu-Xin Luan
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Mengchun Ye
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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18
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Li X, Sun K, Shen W, Zhang Y, Lu MZ, Luo X, Luo H. Rhodium(III)-Catalyzed Direct C-H Arylation of Various Acyclic Enamides with Arylsilanes. Org Lett 2021; 23:31-36. [PMID: 33337165 DOI: 10.1021/acs.orglett.0c03578] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The stereoselective β-C(sp2)-H arylation of various acyclic enamides with arylsilanes via Rh(III)-catalyzed cross-coupling reaction was illustrated. The methodology was characterized by extraordinary efficacy and stereoselectivity, a wide scope of substrates, good functional group tolerance, and the adoption of environmentally friendly arylsilanes. The utility of this present method was evidenced by the gram-scale synthesis and further elaboration of the product. In addition, Rh(III)-catalyzed C-H activation is considered to be the critical step in the reaction mechanism.
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Affiliation(s)
- Xiaolan Li
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Kai Sun
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Wenjuan Shen
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Yong Zhang
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Ming-Zhu Lu
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian 223300, China
| | - Xuzhong Luo
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Haiqing Luo
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
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19
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Wang JX, Wang YT, Zhang H, Fu MC. Visible-light-induced iodine-anion-catalyzed decarboxylative/deaminative C–H alkylation of enamides. Org Chem Front 2021. [DOI: 10.1039/d1qo00660f] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient method for photo-induced iodine-anion-catalyzed C–H alkylation of enamides has been developed. Redox-active esters and Katritzky salts of amino acids are amenable, successfully delivering various functionalized enamides.
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Affiliation(s)
- Jia-Xin Wang
- Hefei National Laboratory for Physical Sciences at the Microscale
- CAS Key Laboratory of Urban Pollutant Conversion
- Anhui Province Key Laboratory of Biomass Clean Energy
- iChEM
- University of Science and Technology of China
| | - Ya-Ting Wang
- Hefei National Laboratory for Physical Sciences at the Microscale
- CAS Key Laboratory of Urban Pollutant Conversion
- Anhui Province Key Laboratory of Biomass Clean Energy
- iChEM
- University of Science and Technology of China
| | - Hao Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale
- CAS Key Laboratory of Urban Pollutant Conversion
- Anhui Province Key Laboratory of Biomass Clean Energy
- iChEM
- University of Science and Technology of China
| | - Ming-Chen Fu
- Hefei National Laboratory for Physical Sciences at the Microscale
- CAS Key Laboratory of Urban Pollutant Conversion
- Anhui Province Key Laboratory of Biomass Clean Energy
- iChEM
- University of Science and Technology of China
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20
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Maraswami M, Goh J, Loh TP. Macrolactam Synthesis via Ring-Closing Alkene-Alkene Cross-Coupling Reactions. Org Lett 2020; 22:9724-9728. [PMID: 33258611 DOI: 10.1021/acs.orglett.0c03801] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reported herein is a practical method for macrolactam synthesis via a Rh(III)-catalyzed ring closing alkene-alkene cross-coupling reaction. The reaction proceeded via a Rh-catalyzed alkenyl sp2 C-H activation process, which allows access to macrocyclic molecules of different ring sizes. Macrolactams containing a conjugated diene framework could be easily prepared in high chemoselectivities and Z,E stereoselectivities.
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Affiliation(s)
- Manikantha Maraswami
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Jeffrey Goh
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Teck-Peng Loh
- Institute of Advanced Synthesis (IAS), School of Chemistry and Chemical Engineering, Northwestern Polytechnical University (NPU), Xi'an 710072, China.,Yangtze River Delta Research Institute of NPU, Taicang, Jiangsu 215400, China.,Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
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21
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Wang C, Xi Y, Huang W, Qu J, Chen Y. Nickel-Catalyzed Regioselective Hydroarylation of Internal Enamides. Org Lett 2020; 22:9319-9324. [DOI: 10.1021/acs.orglett.0c03542] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Chenchen Wang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yang Xi
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Wenyi Huang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Jingping Qu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yifeng Chen
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
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22
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Zhao K, Zhang ZY, Cui XL, Wang YX, Wu XD, Li WM, Wu JX, Zhao LL, Guo JY, Loh TP. Visible-Light-Induced Regio- and Stereoselective C(sp 2)-H Trifluoroethylation of Enamides with 2,2,2-Trifluoroethyl Iodide. Org Lett 2020; 22:9029-9035. [PMID: 33176097 DOI: 10.1021/acs.orglett.0c03418] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A photoredox-catalyzed regio- and stereoselective trifluoroethylation reaction of enamides using commercially available 2,2,2-trifluoroethyl iodide as trifluoroethylating agents has been developed, furnishing geometrically defined and synthetically and physiochemically pivotal β-trifluoroethylated enamides bearing a diverse range of functional groups.
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Affiliation(s)
- Kai Zhao
- Institute of Advanced Synthesis, Technical Institute of Fluorochemistry, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Ze-Yu Zhang
- Institute of Advanced Synthesis, Technical Institute of Fluorochemistry, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Xian-Lu Cui
- Institute of Advanced Synthesis, Technical Institute of Fluorochemistry, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Ying-Xue Wang
- Institute of Advanced Synthesis, Technical Institute of Fluorochemistry, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Xian-Dan Wu
- Institute of Advanced Synthesis, Technical Institute of Fluorochemistry, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Wei-Ming Li
- Institute of Advanced Synthesis, Technical Institute of Fluorochemistry, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Jia-Xu Wu
- Institute of Advanced Synthesis, Technical Institute of Fluorochemistry, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Li-Li Zhao
- Institute of Advanced Synthesis, Technical Institute of Fluorochemistry, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Jing-Yu Guo
- Institute of Advanced Synthesis, Technical Institute of Fluorochemistry, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Teck-Peng Loh
- Institute of Advanced Synthesis, Technical Institute of Fluorochemistry, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China.,Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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23
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Jillella R, Raju S, Hsiao HC, Hsu DS, Chuang SC. Pd-Catalyzed Redox-Neutral C–N Coupling Reaction of Iminoquinones with Electron-Deficient Alkenes without External Oxidants: Access of Tertiary ( E)-Enamines and Application to the Synthesis of Indoles and Quinolin-4-ones. Org Lett 2020; 22:6252-6256. [DOI: 10.1021/acs.orglett.0c01929] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Raveendra Jillella
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Selvam Raju
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Huan-Chang Hsiao
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Day-Shin Hsu
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chiayi 62102, Taiwan
| | - Shih-Ching Chuang
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan
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24
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Huang S, Bao X, Fu Y, Zhang Y, Quan Z, Huo C. Auto‐Oxidative Povarov/Aromatization Tandem Reaction of Glycine Derivatives with Enamides: Acylamino as both Activating and Leaving Group. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000191] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Songhai Huang
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials College of Chemistry and Chemical EngineeringNorthwest Normal University Lanzhou Gansu 730070 China
| | - Xiazhen Bao
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials College of Chemistry and Chemical EngineeringNorthwest Normal University Lanzhou Gansu 730070 China
| | - Ying Fu
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials College of Chemistry and Chemical EngineeringNorthwest Normal University Lanzhou Gansu 730070 China
| | - Yongxin Zhang
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials College of Chemistry and Chemical EngineeringNorthwest Normal University Lanzhou Gansu 730070 China
| | - Zhengjun Quan
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials College of Chemistry and Chemical EngineeringNorthwest Normal University Lanzhou Gansu 730070 China
| | - Congde Huo
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials College of Chemistry and Chemical EngineeringNorthwest Normal University Lanzhou Gansu 730070 China
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25
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Direct Enamido C(sp2)−H Diphosphorylation Enabled by a PCET‐Triggered Double Radical Relay: Access togem‐Bisphosphonates. Chemistry 2020; 26:5515-5521. [DOI: 10.1002/chem.202000517] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 03/06/2020] [Indexed: 12/25/2022]
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26
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Wu Z, Fatuzzo N, Dong G. Distal Alkenyl C-H Functionalization via the Palladium/Norbornene Cooperative Catalysis. J Am Chem Soc 2020; 142:2715-2720. [PMID: 31995370 PMCID: PMC7075342 DOI: 10.1021/jacs.9b11479] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A distal-selective alkenyl C-H arylation method is reported through a directed palladium/norbornene (Pd/NBE) cooperative catalysis. The key is to use an appropriate combination of the directing group and the NBE cocatalyst. A range of acyclic and cyclic cis-olefins are suitable substrates, and the reaction is operated under air with excellent site-selectivity. Preliminary mechanistic studies are consistent with the proposed Pd/NBE-catalyzed C-H activation instead of the Heck pathway. Initial success on distal alkylation has also been achieved using MeI and methyl bromoacetate as electrophiles.
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Affiliation(s)
- Zhao Wu
- Department of Chemistry , University of Chicago , Chicago , Illinois 60637 , United States
| | - Nina Fatuzzo
- Department of Chemistry , University of Chicago , Chicago , Illinois 60637 , United States
| | - Guangbin Dong
- Department of Chemistry , University of Chicago , Chicago , Illinois 60637 , United States
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27
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Zhou Y, Wang Y, Song Z, Nakano T, Song Q. Cu-catalyzed C–N bond cleavage of 3-aminoindazoles for the C–H arylation of enamines. Org Chem Front 2020. [DOI: 10.1039/c9qo01177c] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We have presented a novel Cu-catalyzed stereoselective C–H arylation of enamines by using 3-aminoindazoles arylating agents via oxidative cleavage of two C–N bonds.
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Affiliation(s)
- Yao Zhou
- Institute of Next Generation Matter Transformation
- College of Materials Science & Engineering and College of Chemical Engineering at Huaqiao University
- Xiamen
- P. R. China
| | - Ya Wang
- Institute of Next Generation Matter Transformation
- College of Materials Science & Engineering and College of Chemical Engineering at Huaqiao University
- Xiamen
- P. R. China
| | - Zhiyi Song
- Institute for Catalysis (ICAT)
- Hokkaido university
- Sapporo 001-0021
- Japan
| | - Tamaki Nakano
- Institute for Catalysis (ICAT)
- Hokkaido university
- Sapporo 001-0021
- Japan
| | - Qiuling Song
- Institute of Next Generation Matter Transformation
- College of Materials Science & Engineering and College of Chemical Engineering at Huaqiao University
- Xiamen
- P. R. China
- Fujian University Key Laboratory of Molecule Synthesis and Function Discovery
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28
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Zhu T, Xie S, Rojsitthisak P, Wu J. Recent advances in the direct β-C(sp2)–H functionalization of enamides. Org Biomol Chem 2020; 18:1504-1521. [DOI: 10.1039/c9ob02649e] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Recent advances in the direct β-C(sp2)–H functionalization of enamides, mainly including arylation, alkenylation, alkynylation, alkylation, acylation, sulfonylation, phosphorylation, and others, are reported.
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Affiliation(s)
- Tonghao Zhu
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies
- Taizhou University
- Taizhou 318000
- China
| | - Shimin Xie
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
- China
| | - Pornchai Rojsitthisak
- Department of Food and Pharmaceutical Chemistry
- Faculty of Pharmaceutical Sciences
- Chulalongkorn University
- Patumwan
- Thailand
| | - Jie Wu
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies
- Taizhou University
- Taizhou 318000
- China
- State Key Laboratory of Organometallic Chemistry
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29
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Guo JY, Zhang ZY, Guan T, Mao LW, Ban Q, Zhao K, Loh TP. Photoredox-catalyzed stereoselective alkylation of enamides with N-hydroxyphthalimide esters via decarboxylative cross-coupling reactions. Chem Sci 2019; 10:8792-8798. [PMID: 31803451 PMCID: PMC6849636 DOI: 10.1039/c9sc03070k] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 08/04/2019] [Indexed: 01/01/2023] Open
Abstract
Stereoselective β-C(sp2)-H alkylation of enamides with redox-active N-hydroxyphthalimide esters via a photoredox-catalyzed decarboxylative cross-coupling reaction is demonstrated. This methodology features operational simplicity, broad substrate scopes, and excellent stereoselectivities and functional group tolerance, affording a diverse array of geometrically defined and synthetically valuable enamides bearing primary, secondary or tertiary alkyl groups in satisfactory yields.
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Affiliation(s)
- Jing-Yu Guo
- Institute of Advanced Synthesis , School of Chemistry and Molecular Engineering , Jiangsu National Synergetic Innovation Center for Advanced Materials , Nanjing Tech University , Nanjing 211816 , China .
| | - Ze-Yu Zhang
- Institute of Advanced Synthesis , School of Chemistry and Molecular Engineering , Jiangsu National Synergetic Innovation Center for Advanced Materials , Nanjing Tech University , Nanjing 211816 , China .
| | - Ting Guan
- Institute of Advanced Synthesis , School of Chemistry and Molecular Engineering , Jiangsu National Synergetic Innovation Center for Advanced Materials , Nanjing Tech University , Nanjing 211816 , China .
| | - Lei-Wen Mao
- Institute of Advanced Synthesis , School of Chemistry and Molecular Engineering , Jiangsu National Synergetic Innovation Center for Advanced Materials , Nanjing Tech University , Nanjing 211816 , China .
| | - Qian Ban
- Institute of Advanced Synthesis , School of Chemistry and Molecular Engineering , Jiangsu National Synergetic Innovation Center for Advanced Materials , Nanjing Tech University , Nanjing 211816 , China .
| | - Kai Zhao
- Institute of Advanced Synthesis , School of Chemistry and Molecular Engineering , Jiangsu National Synergetic Innovation Center for Advanced Materials , Nanjing Tech University , Nanjing 211816 , China .
| | - Teck-Peng Loh
- Institute of Advanced Synthesis , School of Chemistry and Molecular Engineering , Jiangsu National Synergetic Innovation Center for Advanced Materials , Nanjing Tech University , Nanjing 211816 , China .
- Division of Chemistry and Biological Chemistry , School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371 , Singapore .
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30
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Guo JY, Guan T, Tao JY, Zhao K, Loh TP. Stereoselective C(sp2)–H Alkylation of Enamides with Unactivated Aliphatic Carboxylic Acids via Decarboxylative Cross-Coupling Reactions. Org Lett 2019; 21:8395-8399. [DOI: 10.1021/acs.orglett.9b03169] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jing-Yu Guo
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Ting Guan
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Ji-Yu Tao
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Kai Zhao
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Teck-Peng Loh
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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31
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Shi P, Li S, Hu LM, Wang C, Loh TP, Hu XH. The ruthenium-catalyzed C-H functionalization of enamides with isocyanates: easy entry to pyrimidin-4-ones. Chem Commun (Camb) 2019; 55:11115-11118. [PMID: 31461097 DOI: 10.1039/c9cc03612a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ruthenium-catalyzed heteroannulation between enamides and isocyanates has been realized as a complementary approach to conventional strategies for the synthesis of pyrimidin-4-ones. High step- and atom-economy was achieved for the rapid construction of such privileged scaffolds, which are found in a multitude of pharmaceutical compounds. The generality and practicability of this transformation were reflected by the broad scope of substrates with diverse functional groups, large-scale synthesis, and late-stage diversification.
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Affiliation(s)
- Pengfei Shi
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.
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32
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Shen ZY, Cheng JK, Wang C, Yuan C, Loh TP, Hu XH. Iron-Catalyzed Carbamoylation of Enamides with Formamides as a Direct Approach to N-Acyl Enamine Amides. ACS Catal 2019. [DOI: 10.1021/acscatal.9b02635] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Zhen-Yao Shen
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jun-Kee Cheng
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Cong Wang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Chao Yuan
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Teck-Peng Loh
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Xu-Hong Hu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
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33
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Zhu TH, Zhang ZY, Tao JY, Zhao K, Loh TP. Regioselective and Stereoselective Difluoromethylation of Enamides with Difluoromethyltriphenylphosphonium Bromide via Photoredox Catalysis. Org Lett 2019; 21:6155-6159. [DOI: 10.1021/acs.orglett.9b02361] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Tong-Hao Zhu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
- Institute of Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Ze-Yu Zhang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Ji-Yu Tao
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Kai Zhao
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Teck-Peng Loh
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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34
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Lou J, He Y, Li Y, Yu Z. Transition‐Metal‐Promoted Direct C−H Cyanoalkylation and Cyanoalkoxylation of Internal Alkenes
via
Radical C−C Bond Cleavage of Cycloketone Oxime Esters. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900402] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Jiang Lou
- Dalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road, Dalian Liaoning 116023 People's Republic of China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Yuan He
- Dalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road, Dalian Liaoning 116023 People's Republic of China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Yunlong Li
- Dalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road, Dalian Liaoning 116023 People's Republic of China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Zhengkun Yu
- Dalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road, Dalian Liaoning 116023 People's Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic ChemistryChinese Academy of Sciences 354 Fenglin Road Shanghai 200032 People's Republic of China
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35
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Caramenti P, Declas N, Tessier R, Wodrich MD, Waser J. Stereoselective synthesis of alkyl-, aryl-, vinyl- and alkynyl-substituted Z-enamides and enol ethers. Chem Sci 2019; 10:3223-3230. [PMID: 30996905 PMCID: PMC6430016 DOI: 10.1039/c8sc05573d] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 02/03/2019] [Indexed: 01/03/2023] Open
Abstract
Enamides and enol ethers are valuable building blocks in synthetic chemistry, yet their stereoselective synthesis can be challenging. Herein, we report a new stereoselective synthesis of vinyl, aryl, alkynyl, alkyl and thio-substituted Z-enamides and enol ethers based on the use of vinylbenziodoxolone (VBX) reagents. The stable VBX reagents were synthesized by stereoselective addition of N- or O-nucleophiles on the corresponding alkynyl reagents in the presence of a catalytic amount of cesium carbonate. The VBX reagents were used in palladium-catalyzed cross-couplings at room temperature to access Z-enamides and enol ethers.
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Affiliation(s)
- Paola Caramenti
- Laboratory of Catalysis and Organic Synthesis , Institut des Sciences et Ingénierie Chimique , Ecole Polytechnique Fédérale de Lausanne , Lausanne , Ch-1015 , Switzerland .
| | - Nina Declas
- Laboratory of Catalysis and Organic Synthesis , Institut des Sciences et Ingénierie Chimique , Ecole Polytechnique Fédérale de Lausanne , Lausanne , Ch-1015 , Switzerland .
| | - Romain Tessier
- Laboratory of Catalysis and Organic Synthesis , Institut des Sciences et Ingénierie Chimique , Ecole Polytechnique Fédérale de Lausanne , Lausanne , Ch-1015 , Switzerland .
| | - Matthew D Wodrich
- Laboratory of Catalysis and Organic Synthesis , Institut des Sciences et Ingénierie Chimique , Ecole Polytechnique Fédérale de Lausanne , Lausanne , Ch-1015 , Switzerland .
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis , Institut des Sciences et Ingénierie Chimique , Ecole Polytechnique Fédérale de Lausanne , Lausanne , Ch-1015 , Switzerland .
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36
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Zhu W, Tong S, Zhu J, Wang MX. Intramolecular Arylation of Tertiary Enamides through Pd(OAc)2-Catalyzed Dehydrogenative Cross-Coupling Reaction: Construction of Fused N-Heterocyclic Scaffolds and Synthesis of Isoindolobenzazepine Alkaloids. J Org Chem 2019; 84:2870-2878. [DOI: 10.1021/acs.joc.9b00010] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Wenju Zhu
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry and Chemical Engineering Tianjin Polytechnic University, Tianjin 300387, China
- MOE Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Shuo Tong
- MOE Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Jieping Zhu
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015 Lausanne, Switzerland
| | - Mei-Xiang Wang
- MOE Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
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37
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Arepally S, Chamuah A, Katta N, Sharada DS. Stereoselective Aminoiodination of Activated Alkynes with Organoiodine(III) Reagents and Amines via Multiple-Site Functionalization: Access to Iodinated Enamines and N
-Aryl Indoles. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801725] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Sagar Arepally
- Catalysis & Chemical Biology Laboratory; Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi 502 285 Sangareddy, Telangana India
| | - Ajoy Chamuah
- Catalysis & Chemical Biology Laboratory; Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi 502 285 Sangareddy, Telangana India
| | - Narenderreddy Katta
- Catalysis & Chemical Biology Laboratory; Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi 502 285 Sangareddy, Telangana India
| | - Duddu S. Sharada
- Catalysis & Chemical Biology Laboratory; Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi 502 285 Sangareddy, Telangana India
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38
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Zhu TH, Zhang XC, Zhao K, Loh TP. Cu(OTf)2-mediated C(sp2)–H arylsulfonylation of enamides via the insertion of sulfur dioxide. Org Chem Front 2019. [DOI: 10.1039/c8qo01144c] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A stereoselective Cu(OTf)2-mediated C(sp2)–H sulfonylation of enamides with arylsulfonyl radicals generated in situ from DABSO and diazonium salts is developed.
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Affiliation(s)
- Tong-Hao Zhu
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Xiao-Chen Zhang
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Kai Zhao
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Teck-Peng Loh
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
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39
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Zhang DL, Li CK, Zeng RS, Shoberu A, Zou JP. Manganese(iii)-mediated selective phosphorylation of enamides: direct synthesis of β-phosphoryl enamides. Org Chem Front 2019. [DOI: 10.1039/c8qo01098f] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Mn(iii)-Mediated radical oxidative selective phosphorylation ofN-styrylamides to afford β-phosphoryl enamides, which could be easily transformed to β-amino phosphonic acids, is described.
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Affiliation(s)
- Dong-Liang Zhang
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Cheng-Kun Li
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Run-Sheng Zeng
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Adedamola Shoberu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Jian-Ping Zou
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
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40
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Balamurugan R, Liu JH, Liu BT. A review of recent developments in fluorescent sensors for the selective detection of palladium ions. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.07.017] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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41
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Liang G, Rong J, Sun W, Chen G, Jiang Y, Loh TP. Synthesis of Polyaromatic Rings: Rh(III)-Catalyzed [5 + 1] Annulation of Enaminones with Vinyl Esters through C–H Bond Functionalization. Org Lett 2018; 20:7326-7331. [DOI: 10.1021/acs.orglett.8b03284] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Gaohui Liang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Jiaxin Rong
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Wangbin Sun
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Gengjia Chen
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Yaojia Jiang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Teck-Peng Loh
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637616, Singapore
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42
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Ahmad T, Qiu SQ, Xu YH, Loh TP. Palladium-Catalyzed One-Pot Highly Regioselective 6-Endo Cyclization and Alkylation of Enynoates: Synthesis of 2-Alkanone Pyrones. J Org Chem 2018; 83:13414-13426. [DOI: 10.1021/acs.joc.8b02198] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tanveer Ahmad
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Sheng-Qi Qiu
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Yun-He Xu
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Teck-Peng Loh
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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43
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Ding R, Yu B. Palladium‐Catalyzed Direct Methylation and Benzylation of Enamides Using Iodomethane and Benzyl Halides with Retention of Alkenyl Moiety. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800535] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Ran Ding
- College of Chemistry and Materials EngineeringAnhui Science and Technology University Bengbu, Anhui 233100 P. R.China
| | - Borong Yu
- Institute of Intelligent MachinesChinese Academy of Sciences Hefei 230031 P. R. China
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44
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Liu Y, Liu Z, Zhang Y, Xiong C. Manganese(III) Acetylacetonate-Mediated Phosphorylation of Enamides at Room Temperature. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800585] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Yue Liu
- Department of Chemistry; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Zhanxiang Liu
- Department of Chemistry; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Yuhong Zhang
- Department of Chemistry; Zhejiang University; Hangzhou 310027 People's Republic of China
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Chunhua Xiong
- Department of Applied Chemistry; Zhejiang Gongshang University; Hangzhou 310012 People's Republic of China
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45
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Lin W, Li W, Lu D, Su F, Wen TB, Zhang HJ. Dual Effects of Cyclopentadienyl Ligands on Rh(III)-Catalyzed Dehydrogenative Arylation of Electron-Rich Alkenes. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01753] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Weidong Lin
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China
| | - Weiwei Li
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China
| | - Dandan Lu
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China
| | - Feng Su
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China
| | - Ting-Bin Wen
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China
| | - Hui-Jun Zhang
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China
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46
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Qiao B, Cao HQ, Huang YJ, Zhang Y, Nie J, Zhang FG, Ma JA. Pd(II)-Catalyzed Phosphorylation of Enamido C(sp2
)-H Bonds: A General Route to β-Amido-vinylphosphonates. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201800262] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Baokun Qiao
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, and Tianjin Collaborative Innovation Center of Chemical Science & Engineering; Tianjin University; Tianjin 300072 China
| | - Hao-Qiang Cao
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, and Tianjin Collaborative Innovation Center of Chemical Science & Engineering; Tianjin University; Tianjin 300072 China
| | - Yin-Jun Huang
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, and Tianjin Collaborative Innovation Center of Chemical Science & Engineering; Tianjin University; Tianjin 300072 China
| | - Yue Zhang
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, and Tianjin Collaborative Innovation Center of Chemical Science & Engineering; Tianjin University; Tianjin 300072 China
| | - Jing Nie
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, and Tianjin Collaborative Innovation Center of Chemical Science & Engineering; Tianjin University; Tianjin 300072 China
| | - Fa-Guang Zhang
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, and Tianjin Collaborative Innovation Center of Chemical Science & Engineering; Tianjin University; Tianjin 300072 China
| | - Jun-An Ma
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, and Tianjin Collaborative Innovation Center of Chemical Science & Engineering; Tianjin University; Tianjin 300072 China
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47
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Achary R, Mathi GR, Kim S, Hwang JY, Kim P. Grignard-mediated rearrangement of trifluoroacetyl from dihydroisoquinoline enamides to afford tertiary trifluoromethylcarbinols. Org Biomol Chem 2018; 16:1452-1456. [PMID: 29431808 DOI: 10.1039/c7ob03079g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Treatment of the trifluoroacetyl enamides of dihydroisoquinolines 2 with diverse Grignard reagents afforded tertiary trifluoromethyl-carbinols 4 by facilitating the addition of tertiary carbinols to the β-carbon of enamides 2. Based on the confirmed formation of vinylogous amides 3, the transformation likely proceeds via unique acyl group rearrangement to the β-carbon of the enamide and subsequent nucleophilic addition of the Grignard reagent. Given the synthetic utility and novelty of this reaction, this work may open new avenues for the synthesis of pharmaceutically important tertiary trifluoromethylcarbinols on cyclic enamide systems.
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Affiliation(s)
- Raghavendra Achary
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea.
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48
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Wang F, Sun W, Wang Y, Jiang Y, Loh TP. Highly Site-Selective Metal-Free C–H Acyloxylation of Stable Enamines. Org Lett 2018; 20:1256-1260. [DOI: 10.1021/acs.orglett.8b00222] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Fei Wang
- Institute
of Advanced Synthesis, Institute of Advanced Materials, School of
Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation
Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Wangbing Sun
- Institute
of Advanced Synthesis, Institute of Advanced Materials, School of
Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation
Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Yixin Wang
- Institute
of Advanced Synthesis, Institute of Advanced Materials, School of
Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation
Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Yaojia Jiang
- Institute
of Advanced Synthesis, Institute of Advanced Materials, School of
Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation
Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Teck-Peng Loh
- Institute
of Advanced Synthesis, Institute of Advanced Materials, School of
Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation
Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, Singapore 637616, Singapore
- Department
of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
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49
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Xing D, Dong G. Branched-Selective Intermolecular Ketone α-Alkylation with Unactivated Alkenes via an Enamide Directing Strategy. J Am Chem Soc 2017; 139:13664-13667. [DOI: 10.1021/jacs.7b08581] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Dong Xing
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Guangbin Dong
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
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50
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Das R, Kumar GS, Kapur M. Amides as Weak Coordinating Groups in Proximal C-H Bond Activation. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700546] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Riki Das
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal Bypass Road, Bhauri 462066 Bhopal MP India
| | - Gangam Srikanth Kumar
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal Bypass Road, Bhauri 462066 Bhopal MP India
| | - Manmohan Kapur
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal Bypass Road, Bhauri 462066 Bhopal MP India
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