Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1976-06-30
1977-04-26
Thomas, Jr., James O.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
252431N, 260439CY, 260593R, C07B 100, C07C 4500
Patent
active
040201082
ABSTRACT:
In a process for the catalytic hydrogenation of unsaturated compounds, which process is characterizable as employing for the active catalyst a glyoxime complexed with cobalt and a base, referred to as a cobaloxime catalyst, the improvement for obtaining increased conversion and/or yield comprising employing a large excess of the glyoxime complexing agent in the hydrogenation reaction. The invention is particularly applicable to the selective reduction of certain .alpha.,.beta.-unsaturated aliphatic ketones and is described with reference to the highly selective hydrogenation of carvone to dihydrocarvone.
REFERENCES:
patent: 3110747 (1963-11-01), Mulleneaux
patent: 3130237 (1964-04-01), Wald
patent: 3463810 (1969-08-01), Malhotra et al.
Beilstein, Handbook der Org. Chem., vol. VII, III supp., pp. 336-337.
Armstrong et al., Chem. Abst., vol. 19, pp. 3054-3055, (1925).
Ohgo et al., Bull. Chem. Soc., Jap., vol. 44, pp. 283-285, (1971).
Schrauzer et al., Ber., vol. 99, pp. 602-610, (1965).
Reamer James H.
SCM Corporation
Thomas Richard H.
Thomas, Jr. James O.
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