Electronic and steric effects in the hydrogenation of alkyl aryl ketones on palladium
作者:
H. van Bekkum,
A.P.G. Kieboom,
K.J.G. van De Putte,
期刊:
Recueil des Travaux Chimiques des Pays‐Bas
(WILEY Available online 1969)
卷期:
Volume 88,
issue 1
页码: 52-61
ISSN:0165-0513
年代: 1969
DOI:10.1002/recl.19690880109
出版商: WILEY‐VCH Verlag
数据来源: WILEY
摘要:
AbstractThe hydrogenation of some forty aromatic ketones to the corresponding alcohols has been studied in ethanol using carbon‐supported palladium as the catalyst. Zero order kinetics with respect to ketone is observed. For acetophenones electronic substituent effects may be expressed in terms of aHammett‐Yukawarelationship with ρ = 0.7. 2‐Alkylacetophenones react very slowly. With alkyl phenyl ketones increase of size of the alkyl group causes increasing rate of hydrogenation. The adsorbed state is discussed on the basis of competition exper
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