Novel Route to β-Chloro Vinyl Sulfones<i>via</i>the Action of Phosphorus Pentachloride on Phenacyl Aryl Sulfones in Chloroform
作者:Ezzat A. Hamed、Mohamed S.M. El-Saadi、Fatma M. El-Hegazy
DOI:10.1080/00397919508013871
日期:1995.11
the kinetics and mechanisms of nucleophilicsubstitution and elimination reactions of halo olefins1–3 so the aim of this work is to prepare compounds of the type C6H5CCI=CHSO2 and to study their behaviour towards elimination and substitutionreactions. Earlier preparation of these sulfones by thermal or copper-catalyzed addition of aryl sulfonyl bromides and chlorides to phenylacetylene reported a mixture
Iron Halide-Mediated Regio- and Stereoselective Halosulfonylation of Terminal Alkynes with Sulfonylhydrazides: Synthesis of (<i>E</i>)-β-Chloro and Bromo Vinylsulfones
Halosulfonylation of terminal alkynes was achieved with sulfonylhydrazides as the sulfonyl precursor and inexpensive iron halide as halide source in the presence TBHP, allowing the regio- and stereoselective generation of (E)-beta-chloro and bromo vinylsulfones.