|
1
|
Li S, Wang X, Yang Y, Ni C, Hu J. Divergent Generation of the Difluoroalkyl Radical and Difluorocarbene via Selective Cleavage of C-S Bonds of the Sulfox-CF 2SO 2Ph Reagent. Org Lett 2024; 26:872-876. [PMID: 38236716 DOI: 10.1021/acs.orglett.3c04116] [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
A new difluoroalkylation reagent Sulfox-CF2SO2Ph bearing both sulfoximine and sulfone moieties was prepared from commercially available SulfoxFluor and PhSO2CF2H. On one hand, the Sulfox-CF2SO2Ph reagent could act as a (phenylsulfonyl)difluoromethyl radical source under photoredox catalysis, in which the arylsulfoximidoyl group is selectively removed. On the other hand, under basic conditions, Sulfox-CF2SO2Ph could serve as a difluorocarbene precursor for S- and O-difluoromethylations with S- and O-nucleophiles, respectively, in which the phenylsulfonyl group in Sulfox-CF2SO2Ph is selectively removed (followed by α-elimination of the arylsulfoximidoyl group).
Collapse
Affiliation(s)
- Shali 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, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Xiu Wang
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Yide Yang
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Chuanfa Ni
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Jinbo Hu
- 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, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| |
Collapse
|
|
2
|
Ishibashi Y, Fujita T, Ichikawa J. Two-Step Synthesis of 2-Trifluoromethylated and 2-Difluoromethylated Benzoheteroles Starting from HFO-1224yd( Z) and HFO-1233yd( Z). Org Lett 2022; 24:9306-9310. [PMID: 36508571 DOI: 10.1021/acs.orglett.2c03930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
An efficient two-step method for synthesizing 2-(trifluoromethyl)- and 2-(difluoromethyl)benzoheteroles bearing various substituents was developed. Commercially available HFO-1224yd(Z) or HFO-1233yd(Z) underwent the Suzuki-Miyaura coupling with arylboronic acids (acid esters) bearing a nucleophilic moiety at the ortho position to yield the corresponding β-fluoro-β-(trifluoromethyl)- or β-fluoro-β-(difluoromethyl)styrenes, respectively. Treatment of the obtained styrenes with potassium phosphate induced nucleophilic 5-endo-trig cyclization to provide the corresponding 2-trifluoromethylated or 2-difluoromethylated indoles and benzofurans, as well as benzothiophenes.
Collapse
Affiliation(s)
- Yuichiro Ishibashi
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Takeshi Fujita
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Junji Ichikawa
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| |
Collapse
|
|
3
|
Zhao H, Leng XB, Zhang W, Shen Q. [Ph
4
P]
+
[Cu(CF
2
H)
2
]
−
: A Powerful Difluoromethylating Reagent Inspired by Mechanistic Investigation. Angew Chem Int Ed Engl 2022; 61:e202210151. [DOI: 10.1002/anie.202210151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Indexed: 11/05/2022]
Affiliation(s)
- Haiwei Zhao
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry 345 Lingling Lu Shanghai 200032 China
| | - Xuebing B. Leng
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry 345 Lingling Lu Shanghai 200032 China
| | - Wei Zhang
- Centre for Green Chemistry and Department of Chemistry University of Massachusetts Boston 100 Morrissey Boulevard Boston Massachusetts 02125 USA
| | - Qilong Shen
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry 345 Lingling Lu Shanghai 200032 China
| |
Collapse
|
|
4
|
Zhao H, Leng X, Zhang W, Shen Q. [Ph4P]+[Cu(CF2H)2]‐: A Powerful Difluoromethylating Reagent Inspired by Mechanistic Investigation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202210151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Haiwei Zhao
- SIOC: Shanghai Institute of Organic Chemistry Key Laboratory of Organofluorine Chemistry 345 Lingling Lu 200032 Shanghai CHINA
| | - Xuebing Leng
- Shanghai Institute of Organic Chemistry Key Laboratory of Organofluorine Chemistry 345 Lingling Lu 200032 Shanghai CHINA
| | - Wei Zhang
- University of Massachusetts Boston Chemistry UNITED STATES
| | - Qilong Shen
- Shanghai Institute of Organic Chemistry Key Laboratory of Organofluorine Chemsitry 345 Lingling Road 200032 Shanghai CHINA
| |
Collapse
|