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Sun R, Junpeng Y, Zhang Z, Luo R, Tang W, Liu X, Liu X, Ding A, Fu Z, Guo S, Cai H. Efficient synthesis of α-amino-vinylphosphine oxides from alkyl nitriles via manganese-catalyzed phosphinoenamination. Org Biomol Chem 2024; 22:4993-5000. [PMID: 38840509 DOI: 10.1039/d4ob00489b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
A protocol for the synthesis of α-amino-vinylphosphine oxides by phosphinoenamination reaction between alkyl nitriles and phosphine oxides was developed. The combination of Mn(OAc)2 as a Lewis acid and guanidine as a Lewis base was found to be an efficient catalytic system for this reaction. A series of alkyl nitriles and phosphine oxides are compatible with this conversion, furnishing the desired products in up to 95% yield under mild conditions. Furthermore, this method demonstrates the capability of gram-scale synthesis.
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Affiliation(s)
- Runbo Sun
- Department of Chemistry, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China.
| | - Yang Junpeng
- Department of Chemistry, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China.
| | - Zheng Zhang
- The First Clinical Medical College, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China
| | - Ruihang Luo
- The First Clinical Medical College, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China
| | - Wentao Tang
- The First Clinical Medical College, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China
| | - Xinyu Liu
- The First Clinical Medical College, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China
| | - Xiaoyong Liu
- Department of Chemistry, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China.
| | - Anjun Ding
- Department of Chemistry, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China.
| | - Zhengjiang Fu
- Department of Chemistry, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China.
| | - Shengmei Guo
- Department of Chemistry, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China.
| | - Hu Cai
- Department of Chemistry, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China.
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Wang J, Zhang Y, Zhu L, Xue XS, Li C. Photoinduced Remote C(sp 3)-H Phosphonylation of Amides. Angew Chem Int Ed Engl 2024; 63:e202400856. [PMID: 38570332 DOI: 10.1002/anie.202400856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 04/02/2024] [Accepted: 04/03/2024] [Indexed: 04/05/2024]
Abstract
The present study reports an unprecedented protocol for the phosphonylation of unactivated C(sp3)-H bonds. By utilizing 1 mol % 4DPAIPN (1,2,3,5-tetrakis(diphenylamino)-4,6-dicyanobenzene) as the catalyst, satisfactory yields of γ-phosphonylated amides are obtained through a visible-light-induced reaction between N-((4-cyanobenzoyl)oxy)alkanamides and 9-fluorenyl o-phenylene phosphite at room temperature. This protocol demonstrates broad substrate scope and wide functional group compatibility.
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Affiliation(s)
- Jian Wang
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Yuchen Zhang
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Lin Zhu
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Xiao-Song Xue
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Chaozhong Li
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
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Cheng Y, Zhen J, Chai L, Wang J, Yin J, Zhu L, Li C. Photoinduced Decarboxylative Radical Phosphinylation. Angew Chem Int Ed Engl 2024; 63:e202316764. [PMID: 38179843 DOI: 10.1002/anie.202316764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 12/21/2023] [Accepted: 01/04/2024] [Indexed: 01/06/2024]
Abstract
Reported herein is an unprecedented protocol for C(sp3 )-phosphinylation. With 1 mol % 4CzIPN (1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene) as the catalyst, the visible light induced reaction of redox-active esters of aliphatic carboxylic acids with dimethyl arylphosphonites or diethyl alkylphosphonites at room temperature provides the corresponding decarboxylative phosphinylation products in satisfactory yields. The protocol exhibits broad substrate scope and wide functional-group compatibility, enabling the late-stage modification of complex molecules and rapid synthesis of bioactive phosphinic acids such as glutamine synthetase phosphinothricin and a kynureninase inhibitor. A radical-polar crossover mechanism involving the formation and subsequent oxidation of phosphoranyl radicals followed by nucleophilic demethylation (or deethylation) is proposed.
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Affiliation(s)
- Yulu Cheng
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Jingsen Zhen
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Linxiang Chai
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Jian Wang
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Junyue Yin
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Lin Zhu
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Chaozhong Li
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
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