Method for the preparation of cyclohexanone

Details Method for the preparation of cyclohexanone Method for the preparation of cyclohexanone

1982-01-22

1983-08-23

Reamer, James H.

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

Organic compounds

Oxygen containing

C07C 4534

Patent

active

044005440

ABSTRACT:
The invention provides an efficient method for the preparation of cycloheone by the liquid-phase oxidation of cyclohexene in the presence of a catalyst system. The rate of conversion of the cyclohexene and the yield of cyclohexanone are unexpectedly increased when the reaction mixture brought into contact with oxygen or air contains a limited amount of an aliphatic alcohol having 2-10 carbon atoms in a molecule such as ethyl alcohol with the catalyst system composed of a palladium compound, e.g. PdCl.sub.2, and at least one co-catalytic ingredient which is a copper compound or iron compound such as CuCl.sub.2 or FeCl.sub.3. The influence of benzene or cyclohexane admixed in the reaction mixture was studied to indicate no adverse effects or even better results in the reaction giving further advantages of the process in which the starting cyclohexene need not be purified and can be used as prepared by the partial hydrogenation of benzene or partial dehydrogenation of cyclohexane.

REFERENCES:
patent: 3340304 (1967-09-01), Schulz et al.
patent: 3370073 (1968-02-01), Clement et al.
patent: 3391190 (1968-07-01), Kilsheimer et al.
patent: 3410807 (1968-11-01), Lloyd
patent: 3927108 (1975-12-01), van de Moesdyk et al.
patent: 4271320 (1981-06-01), Takitah et al.

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