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

1975-03-24

1976-07-27

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 4720

Patent

active

039718301

ABSTRACT:
A process is provided for the semihydrogenation of the olefinic group in conjugated position to a carbonyl group in citral, a dienic aldehyde. The dienic aldehyde is hydrogenated with hydrogen in the presence of a palladium catalyst, a lower aliphatic alcohol, and an aqueous alkaline solution. The process is of particular application to the semihydrogenation of citral to citronellal.

REFERENCES:
patent: 1210681 (1917-01-01), Paal
patent: 3280192 (1966-10-01), Levy et al.
Clark, N. G., Modern Org. Chem., pp. 232, 233, 238 and 239, 1964, Oxford Press.

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