Catalytic quantities of (R)- or (S)-1-(1-naphthyl)ethylamine induce up to 82% e.e. in the hydrogenation of ethyl pyruvate over Ptâalumina, the actual modifier responsible for enantioselection being the secondary amine resulting from imine formation with ethyl pyruvate and subsequent reduction of the CN bond; a series of related derivatives has been prepared by reductive amination and tested as chiral modifiers.
催化量的 (R)- 或 (S)-1-(1-
萘基)
乙胺诱导高达 82% e.e.在
丙酮酸乙酯在
铂氧化铝上的氢化中,负责对映选择的实际改性剂是由与
丙酮酸乙酯形成
亚胺以及随后CN键还原而产生的仲胺;通过还原胺化制备了一系列相关衍
生物并作为手性修饰剂进行了测试。