Ready N-alkylation of enantiopure aminophenols: synthesis of tertiary aminophenols
作者:Cristina Cimarelli、Gianni Palmieri、Emanuela Volpini
DOI:10.1016/s0040-4020(01)00589-0
日期:2001.7
alkylation of aminophenols to enantiopure tertiary aminophenols, which are useful chiral ligands for metal-catalysed asymmetric reactions, is reported. This very simple synthetic methodology, through reduction or alkylation of an intermediate benzoxazine, was performed in mild conditions, suitable for the conservation of the configuration of the stereogenic centres. Some crystalline aminophenols show the
报道了氨基酚的区域选择性间接烷基化为对映体纯的叔氨基酚,其对于金属催化的不对称反应是有用的手性配体。这种非常简单的合成方法,是通过中间体苯并恶嗪的还原或烷基化,在温和的条件下进行的,适合保留立体异构中心的构型。一些结晶氨基苯酚显示出“结晶诱导的不对称转变”现象。