A comparative study of the reactivities of the hydrogenation of β-ketoesters over tartaric acid-modified and unmodified Raney nickels indicated that a substrate specific activation by the tartaric acid modification is the reason for the almost perfect enantio-differentiation in the reaction of methyl 3-cyclopropyl-3-oxopropanoate (4).
对比研究显示,
酒石酸改性与未改性Raney
镍催化的β-
酮酯氢化反应的反应性表明,
酒石酸改性所导致的底物特异性活化是导致甲基3-环丙基-3-氧基
丙酸酯(4)反应中几乎完美的手性差异化的原因。