THE SECONDARY REACTION IN THE CONDENSATION OF 1-METHYL-2-METHYLTHIO-IMIDAZOLINE WITH ACTIVE METHYLENE COMPOUNDS

摘要

Mono-substituted heterocyclic ketene aminals are formed by the reactionof 1-methyl-2-methylthio-imidazoline with active methylene compoundscontaininq an acetyl or benzoyl group by the elimination of both amethylthio and an acyl group.This is resulted by the secondary reactioof the produced methanethiol to attack the more active carbonyl group.