Mercapto carboxylic acid esters - used as odourisers and aromatisers in perfumes, soaps, foods, detergents

摘要

Mercapto-carboxylic acid esters (I) of formula:- (where R' is CC alkyl, alkenyl or alkadienyl group and R2 is a 3-9C alkyl or alkenyl group), may be prepd. by reacting R2-CH=CH-COOR' with H2S in presence of a basic catalyst. A pref. cpd. is ethyl-3-mercapto-j-Me-caproate which is prepd. by reacting ethyl-4-methyl-2-hexanoate with H2S.