Change in selective action of catalysts during hydrogenation of dienone group

Autor:	G. I. Samokhvalov, L. F. Gur'yanova, L. Kh. Freidlin, N. V. Borunova, L. I. Gvinter, M. A. Miropol'skaya
Rok vydání:	1975
Předmět:	chemistry.chemical_compound Character (mathematics) chemistry Hydrogen Group (periodic table) Yield (chemistry) Organic chemistry chemistry.chemical_element General Chemistry Conjugated system Ionone Selectivity Catalysis
Zdroj:	Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 24:514-517
ISSN:	1573-9171 0568-5230
DOI:	10.1007/bf00927467
Popis:	1. On the example of the hydrogenation ofΒ-ionone we verified the general character of the rule, according to which modification with Pb, Cd, or ZnO changes the selectivity of the action of catalysts that belong to the Group VIII metals, and the hydrogen adds selectively to the C = C bond that is conjugated with the carbonyl group of the 3,5-dien-2-one. The exo character of the C = C bond in the 5,6 position is responsible for the high selectivity of the process. 2. The method of mathematical planning of the experiment was used to find the optimum conditions for the hydrogenation ofΒ-ionone to dihydro-Β-ionone on skeletal Ni, modified with lead, in 93–94% yield.
Databáze:	OpenAIRE
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