Process for the semihydrogenation of citral to citronellal

Details Process for the semihydrogenation of citral to citronellal Process for the semihydrogenation of citral to citronellal

1973-05-02

1976-07-27

Rizzo, Nicholas S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 4720

Patent

active

039718310

ABSTRACT:
A process is provided for the semihydrogenation of the olefinic group in conjugated position to a carbonyl group in citral and homologous dienic aldehydes. The dienic aldehyde is hydrogenated catalytically using a palladium catalyst, and in solution in a lower aliphatic alcohol in the presence of an alkali or alkaline earth metal borate. The process is of particular application to the semihydrogenation of citral to citronellal.

REFERENCES:
Skita, "Ber. der deut. Chem. Gesell," vol. 42, pp. 1627-1635 (1909).

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