Synthesis 2020; 52(17): 2541-2550
DOI: 10.1055/s-0040-1707120
paper
© Georg Thieme Verlag Stuttgart · New York

Sulfite-Promoted C–H Fluoroalkyl Sulfuration of Imidazoheterocycles with Bromofluoroacetate and Elemental Sulfur

Yong-Chao Gao
a   Department of Applied Chemistry, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, P. R. of China   Email: rytang@scau.edu.cn
,
Zi-Hao Huang
a   Department of Applied Chemistry, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, P. R. of China   Email: rytang@scau.edu.cn
,
Zhao-Sheng Zhang
b   State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Integrative Microbiology Research Centre, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou 510642, P. R. of China   Email: ziningcui@scau.edu.cn
,
Jin-Xin Xie
a   Department of Applied Chemistry, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, P. R. of China   Email: rytang@scau.edu.cn
,
Zi-Ning Cui
b   State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Integrative Microbiology Research Centre, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou 510642, P. R. of China   Email: ziningcui@scau.edu.cn
c   Lingnan Guangdong Laboratory of Modern Agriculture, Guangzhou 510642, P. R. of China
,
a   Department of Applied Chemistry, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, P. R. of China   Email: rytang@scau.edu.cn
c   Lingnan Guangdong Laboratory of Modern Agriculture, Guangzhou 510642, P. R. of China
› Author Affiliations

We gratefully thank the Guangdong Basic and Applied Basic Research Foundation (Grant No. 2019B151502052) for financial support.
Further Information

Publication History

Received: 05 March 2020

Accepted after revision: 22 April 2020

Publication Date:
18 May 2020 (online)


Abstract

A transition-metal-free sulfite-promoted three-component C–H sulfuration between imidazoheterocycles, elemental sulfur, and bromofluoroacetate is developed. Sulfites, including Na2S2O4, NaHSO3, and Na2S2O3, are able to promote the formation of two C–S bonds in one step using elemental sulfur as a green sulfurating agent, allowing the rapid introduction of the synthetically useful S-fluoroacetate group into imidazoheterocycles. These new imidazoheterocycle derivatives bearing an S-fluoroacetate group can be easily modified to produce pharmaceutically attractive compounds.

Supporting Information