Abstract Liquid-phase thermal reactions of phenylacetylene with the system arene (hetarene) thioldiselenide at 110-180° C proceed through conjugate addition to the phenylacetylene triple bond of one alkylselanyl and one arene (hetarenesulfanyl groups to form 2-alkylselanyl-2-[aryl (hetaryl) sulfanyl]-1-phenylethenes and 1-alkylselanyl-2-[aryl (hetaryl) sulfanyl]-1-phenylethenes. Therewith, direct addition of thiols to phenylacetylene ...
