Change in the selectivity of the action of catalysts in the hydrogenation of the dienone group View Full Text


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Article Info

DATE

1972-06

AUTHORS

N. V. Borunova, L. Kh. Freidlin, L. I. Gvinter, T. Atabekov, V. A. Zamureenko, I. M. Kustanovich

ABSTRACT

ConclusionsThe addition of metallic lead and treatment with a solution of lead acetate changed the selectivity of the acticn of Ni-Al2O3 and Ni-ZnO catalysts in the hydrogenation of dienones. In the presence of a modified catalyst, hydrogen is preferentially added at the 3,4-double bond, while on an unmodified catalyst it is preferentially added at the 5,6-double bond.Intermediate enol formation (registered by deutero-exchange) shows that the change in the direction of the process is associated with a change in its mechanism. On the modified catalyst, 1,2-addition of hydrogen is reduced, and the 3,4-bond is saturated to a substantial degree by 1,4-addition of hydrogen to the C=C C=O group. More... »

PAGES

1254-1257

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf00854539

DOI

http://dx.doi.org/10.1007/bf00854539

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1036540181


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