A general and facile methodology for temperature-dependent enantiodivergent and diastereodivergent synthesis of amino acids with one or multiple chiral centers was developed. Camphor-based tricyclic iminolactones attack electrophiles from the endo face at low temperature (−78 to −40 °C) and from the exo face at high temperature (−10 to 25 °C).
开发了一种通用且简便的方法,用于合成具有一个或多个手性中心的温度依赖性对映异构体和非对映异构体
氨基酸。基于
樟脑的
三环亚
氨基内酯在低温(−78至-40°C)时从内表面攻击亲电子体,在高温(−10至25°C)时从外表面攻击亲电子体。