Preparation of polyene aldehydes

Details Preparation of polyene aldehydes Preparation of polyene aldehydes

1988-02-05

1992-06-02

Siegel, Alan

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

Organic compounds

Oxygen containing

568446, 549375, 549454, 554120, C07C 4500, C07D31906, C09F 500

Patent

active

051188660

ABSTRACT:
Polyene aldehydes of the general formula I ##STR1## where R is ##STR2## where R' is alkyl, aryl, aralkyl or cycloalkyl and, if desired, may be further substituted, and the radicals R" are each C.sub.1 -C.sub.4 -alkyl or together form --CH.sub.2 --CH.sub.2 -- or --CH.sub.2 --CH.sub.2 --CH.sub.2 -- bridges which, if desired, may be further substituted by C.sub.1 -C.sub.4 -alkyl, are prepared by catalytic oxidation of the corresponding polyene alcohol with oxygen or an oxygen-containing gas by a process wherein the oxidation is carried out in the presence of the catalyst system comprising 2,2,6,6-tetramethylpiperidine 1-oxide or 4-oxo-2,2,6,6-tetramethylpiperidine 1-oxide and copper(I) chloride.

REFERENCES:
patent: 4005031 (1977-01-01), Surmatis
patent: 4026910 (1977-05-01), Marbet
Synthesis 1976, pp. 65-75.
Houben-Weyl VII/1 (1954), p. 178.
Chem. Rev. 67, p. 188 (1967).
J. Chem. Soc. (1952), p. 1094.
Houben-Weyl V/ld, p. 13 (1972).
J. Am. Chem. Soc., vol. 106, pp. 3374-3376 (1984).
Lieb. Ann. der Chem. 1976, pp. 2194-2205.
Helv. Chim. Acta 49, p. 369, 1966.

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