T. Matsuda et al., Novel bifunctional thiolcarboxylic acid esters useful as crosslinking agents for optical materials, SYN COMMUN, 30(16), 2000, pp. 3041-3045
Novel bifunctional thiolcarboxylic acid esters such as thiodimethacrylates
have been prepared in good yield by reaction of dimercaptanes with acid chl
oride in KOHaq and organic solvent system in the presence of phase transfer
catalyst under mild reaction conditions. These bifunctional thiomethacryla
tes are useful as crosslinking agents having high refractive indices.