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Iron Halide-Mediated Regio- and Stereoselective Halosulfonylation of Terminal Alkynes with Sulfonylhydrazides: Synthesis of (E)‑β-Chloro and Bromo Vinylsulfones

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journal contribution
posted on 20.09.2013, 00:00 authored by Xiaoqing Li, Xinhua Shi, Mingwu Fang, Xiangsheng Xu
Halosulfonylation of terminal alkynes was achieved with sulfonyl­hydrazides as the sulfonyl precursor and inexpensive iron halide as halide source in the presence of TBHP, allowing the regio- and stereoselective generation of (E)-β-chloro and bromo vinylsulfones.