Stereocomplexity and Stereoselective Synthesis of Triamine Molecules Bearing Four Chiral Carbon Centers: Stereodifferentiated Preparation of All 10 Stereoisomers of 2,6-Bis[1-(1-phenylethylamino)ethyl]pyridines
作者:Jun'ichi Uenishi、Sachiko Aburatani、Taro Takami
DOI:10.1021/jo061729e
日期:2007.1.1
hydroxy groups with (R)-phenylethylamine or (S)-phenylethylamine via its methanesulfonate or toluenesulfonate simultaneously or stepwise afforded all the stereoisomers of 1. Stereospecific preparation of all the 10 possible stereoisomers of 2,6-bis[1-(1-phenylethylamino)ethyl]pyridines 1a−f was achieved. Triamine 1b reacted with ZnCl2 to form Zn−triamine complex 16, the structure of which was determined
化合物(S,S)-2,6-双(1-羟乙基)吡啶,(R,R)-2,6-双(1-乙酰氧基乙基)吡啶和(1 R,1 'S)-2-(通过脂肪酶催化的对映体纯形式的2,6-双(1-羟乙基)吡啶的动力学乙酰化反应获得了1-乙酰氧基乙基)-6-(1'-羟乙基)吡啶。(R)-苯乙胺或(S)-苯乙胺通过甲磺酸盐或甲苯磺酸盐的立体定向取代同时或逐步产生1的所有立体异构体。2,6-双[1-(1-(1-苯基乙基氨基)乙基]吡啶1a的所有10种可能的立体异构体的立体定向制备− f达到。三胺1b中与氯化锌反应2,形成锌-三胺复合物16,其结构通过X射线结晶分析来确定。