关键词: 酯;催化;环戊二烯 P;羰基化合物;醛;金属茂络合物;自由基反应;还原反应;钛络合物;格氏试剂;酮 P;二氯化物;偶合反应, 烷

Aliphatic, aromatic and a,b-unsatd. ketones were readily reduced to the corresponding secondary alcs. by iso-Pr magnesium bromide in the presence of a catalytic amount of bis(neomenthylcyclopentadienyl)titanium dichloride, while diaryl ketones afforded reduction coupling product pinacols under similar conditions. Aliphatic and aromatic esters were reduced to the corresponding primary alcs. by the Grignard reagent with the same catalyst.