Fig. 1: Introductions to methylthio moiety and hydromethylthiolation.
From: Cobalt-catalyzed hydrothiolation of alkynes for the diverse synthesis of branched alkenyl sulfides

A Alkenyl-thio moiety in drug candidates and materials. B Catalytic hydrothiolation of terminal alkynes. C This work: Markovnikov hydrothiolation of terminal alkynes.