Synthesis of methionine hydroxy analog or derivative, and esters thereof; synthesis of 1-acyloxy-4-hydrocarbylthiopropene, and products

摘要

Discloses (1) reacting a 3-(hydrocarbylthio) propionaldehyde with a compound <IMAGE> (2) reacting latter compound with CO and R''YH where y is O or S to make <IMAGE> (3) hydrolyzing this compound; (4) certain new 1-acyloxy-3-methylthiopropenes and (5) the methyl ester of 2-acetoxy-4-(methylthio)thiobutanoic acid.