Process for the preparation of cycloaliphatic aldehydes

摘要

Process for the preparation of cycloaliphatic aldehydes of formula <IMAGE> (I) having either an isolated double bond in position 1 or 2 (endocyclic or exocyclic), or two conjugated double bonds in position 1 and 3 or 2(exocyclic) and 3 of the ring as indicated by the dotted lines, which process consists in subjecting to a deprotonation an ester of formula <IMAGE> (II) wherein the dotted lines have the above given meaning and Y designates an oxygen atom or a sulphur atom and R' stands for a linear or branched alkyl radical or a substituted or unsubstituted phenyl group, followed by H(-) addition and hydrolysis.