Catalytic hydrogenation

Details Catalytic hydrogenation Catalytic hydrogenation

1983-07-11

1985-10-01

Sneed, Helen M. S.

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

Organic compounds

Phosphorus containing

568 11, C07F 954

Patent

active

045447705

ABSTRACT:
Compounds of the formula: ##STR1## wherein R.sup.1 is a 2,6,6-trimethyl-1-cyclohexen-1-yl or 2,3,6-trimethylphenyl group, either of which may be unsubstituted or substituted by a hydroxy group or a protected hydroxy group, R.sup.2 is aryl, and X.sup.- is an anion
are manufactured by hydrogenating a compound of the formula: ##STR2## wherein R.sup.1, R.sup.2 and X.crclbar. are as above, in an organic solvent or aqueous-organic solvent in the presence of a nickel-, palladium-, platinum-, cobalt-, rhodium-, iridium-, or ruthenium-containing catalyst.
The process is suitable as an intermediate step in carotenoid and retinoid syntheses.

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