Abstract
Since our interest is in studying the kinetics and mechanisms of nucleophilic substitution 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 substitution reactions. Earlier preparation of these sulfones by thermal or copper-catalyzed addition of aryl sulfonyl bromides and chlorides to phenylacetylene reported a mixture of E- and Z- β-halovinyl sulfones or exclusively E-isomer4–7. The reaction of phosphorus pentachloride with phenacyl aryl sulfones is investigated as a possible route to prepare β-chlorovinyl sulfones.