Na. Keiko et al., Kinetic and thermodynamic control in the synthesis of methylglyoxal thioacetals from 2-ethoxypropenal, MENDELEEV C, (3), 2001, pp. 110-111
Under kinetically controlled conditions, the addition of organylthiols to 2
-ethoxypropenal follows the Markovnikov rule to give 2-ethoxy-2-organylthio
propanals which spontaneously isomerize to 1-ethoxy-1-organylthiopropanones
in storage or in the presence of an acid catalyst.