Process for the preparation of cycloaliphatic aldehydes

Details Process for the preparation of cycloaliphatic aldehydes Process for the preparation of cycloaliphatic aldehydes

1987-09-01

1989-09-19

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568446, C07C 4542

Patent

active

048683400

ABSTRACT:
Process for the preparation of cycloaliphatic aldehydes of formula ##STR1## 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 ##STR2## 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.sup..crclbar. addition and hydrolysis.

REFERENCES:
patent: 4026824 (1977-05-01), Pittet
Arctander, S., Perfume and Flavor Chemicals (Aroma Chemicals), I, Arctander-Montclair, N.J., 1969, 760.

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