Catalytic reduction of unsaturated ketones in a continuous reactor. II. Hydrogenation of 6, 10-dimethyl-3, 5, 9-undecatrien-2-one on raney nickel

…, ÉM Sul'man, TV Ankudinova, OB Sannikov…

Index: Gontar', A. I.; Popov, O. S.; Sul'man, E. M.; Ankudinova, T. V.; Sannikov, O. B.; et al. Pharmaceutical Chemistry Journal, 1983 , vol. 17, # 2 p. 141 - 143 Khimiko-Farmatsevticheskii Zhurnal, 1983 , vol. 17, # 2 p. 197 - 199

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Abstract

The catalytic hydrogenation of three C= C bonds in pseudoionone [6, 10-dimethyl-3, 5, 9- undecatrien-2-one (I)] gave hexahydropseudoionone (II), which is an intermediate product in the synthesis of vitamins E and Kz. The principal mechanisms for carrying out this reaction under batchwise conditions are given in [1-3]. Among the hydrogenation products 5, 6- dihydropseudoionone (III), 3, 4-dihydropseudoionone (IV), 3, 4, 5, 6- ...