Process for the preparation of unsaturated aldehydes

Details Process for the preparation of unsaturated aldehydes Process for the preparation of unsaturated aldehydes

1975-09-08

1976-09-07

Milestone, Norma S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252522, C07D30304

Patent

active

039794253

ABSTRACT:
The present invention relates to a novel process for preparing unsaturated aldehydes comprising four double bonds of formula ##SPC1##
Wherein one of the double bonds is represented by the dotted lines. Aldehyde Ia (called .alpha.-sinensal) corresponds to the above formula wherein the double bond represented by the dotted lines is in the main carbon chain. Aldehyde Ib (called .beta.-sinensal) corresponds to the above formula wherein the double bond represented by the dotted lines is in the side chain. The invention also relates to new intermediates used in the said new process and to methods for preparing them. The said intermediates have also valuable organoleptic properties and are useful as fragrances in the preparation of perfumes, perfumed products and artificial essential oils.

REFERENCES:
Zhurnal Obschei Khimii, vol. 27 (1957) p. 136.

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