One‐Pot Synthesis of Mixed (Z)‐1,2‐Bis(organylchalcogene)1‐alkenes Precursors of the Novel β‐Organylthio Vinyllithium Intermediates.

Hydrochalocogenation of 1-phenylthiocetylenes with organyltellurolate or selenolate anion gives (Z)-1,2-bis(organylchlecoheno)-1-alkenes (III) and (VI).