Process for the preparation of cyclohexanol derivatives

Details Process for the preparation of cyclohexanol derivatives Process for the preparation of cyclohexanol derivatives

1991-12-20

1992-11-03

Lone, Werren B.

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

Organic compounds

Oxygen containing

568835, C07C 3508, C07C 2919

Patent

active

051604981

ABSTRACT:
A process for the preparation of 4-tert-butyl-cyclohexanol, comprising the hydrogenation of 4-tert-butyl-phenol or of 4-tert-butyl-cyclohexanone in the presence of a catalytic system composed of rhodium on a Al.sub.2 O.sub.3, SiO.sub.2, TiO.sub.2, SiO.sub.2.Al.sub.2 O.sub.3 or charcoal support, in combination with HBF.sub.4 or BF.sub.3.[Y].sub.n wherein Y designates a R.sub.2 O group, R being a C.sub.1 to C.sub.6 lower alkyl radical, or a CH.sub.3 CO.sub.2 H, H.sub.3 PO.sub.4 or H.sub.2 O group and index n is equal to zero, 1 or 2.

REFERENCES:
patent: 2927127 (1960-03-01), Somerville et al.
patent: 4343955 (1982-08-01), Oshima et al.
patent: 4508918 (1985-04-01), Yasuhara et al.
patent: 4551564 (1985-11-01), Otte et al.
patent: 4751214 (1988-06-01), Gramlich et al.

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