Optically pure 1-aryl-N-(2'-hydroxy-1'-isopropylethyl)-2-phenylethylamines (3a-c) were synthesized by the reactions of N-(2-hydroxy-1-isopropylethyl) arylmethylideneamines (2a-c) with benzylmagnesium chloride. The diastereomers (5a-c) were prepared from N-(2-hydroxy-1-isopropylethyl) phenylethylideneamine (4) and aryllithium compounds. The optical purity of 3a was elucidated and the absolute configuration was determined by synthesis via an alternative route. The characteristic methyl signals in the nuclear magnetic resonance (NMR) spectra suggested the configurations of the chiral amines (3a-c and 5a-c).
通过N-(2-羟基-1-异丙基乙基)苯亚甲基胺(2a-c)与
苄基氯化镁的反应,合成了光学纯的1-芳基-N-(2'-羟基-1'-异丙基乙基)-
2-苯乙胺(3a-c)。通过N-(2-羟基-1-异丙基乙基)苯乙亚甲基胺(4)与芳基
锂化合物的反应,制备了非对映异构体(5a-c)。通过另一条合成路线阐明了3a的光学纯度,并确定了其绝对构型。核磁共振(NMR)谱中特征的甲基信号表明了手性胺(3a-c和5a-c)的构型。