Process for the preparation of 3-(4-methyl-3-cyclohexen-1-yl) bu

Details Process for the preparation of 3-(4-methyl-3-cyclohexen-1-yl) bu Process for the preparation of 3-(4-methyl-3-cyclohexen-1-yl) bu

1979-08-24

1982-06-29

Helfin, Bernard

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

Organic compounds

Oxygen containing

C07C 4550

Patent

active

043373631

ABSTRACT:
In a process for the preparation of 3-(4-methyl-3-cyclohexen-1-yl) butyraldehyde by hydroformylation of limonene in the presence of a catalyst containing a metal of Group VIII of the Periodic Table, the improvement wherein a rhodium carbonyl complex containing additionally a triphenyl and/or trialkyl phosphine as ligands is used as catalyst and the reaction is conducted at a pressure of 100 to 350 bars and at a temperature of 110.degree. to 160.degree. C., the triphenyl or trialkyl phosphines or mixture thereof being present in an amount of 10 to 50 moles per gram atom of rhodium in the reaction mixture.

REFERENCES:
patent: 3801646 (1974-04-01), Booth
patent: 3933919 (1976-01-01), Wilkinson
patent: 4122121 (1978-10-01), Gray et al.
Kogami (I), Yukagaku, vol. 22, No. 6 (1973), pp. 316-320.
Kogami et al., Chem. Abs., vol. 79 (1973), 92400n.

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