Activation-temperature dependence in enantioselective hydrogenation of unsaturated carboxylic acids over cinchonidine-modified Pd/C catalysts
摘要：
The enantioselective hydrogenation of α , β-unsaturated acids catalyzed by cinchonidine-modified Pd/C was found to be highly dependent on the pretreatment temperature of the catalyst. An asymmetric yield as high as 92% was achieved in the hydrogenation of ( E)-2,3-di(4-methoxyphenyl)propenoic acid using a conventional 5%Pd/C catalyst activated in situ at elevated temperatures before modification with cinchonidine.
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关键词：
Enantioselectivity Hydrogenation Unsaturated carboxylic acid Palladium catalyst Cinchonidine Activation temperature
DOI：
10.1016/j.jcat.2005.09.006
被引量：
年份：
2005
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