Ring-opening of 3-aryl-2,3-epoxyamides 1 was achieved by using samarium diiodide and D2O, yielding 3-aryl-3-deuterio-2-hydroxyamides 2 with total regioselectivity. The starting compounds 1 were easily prepared by reaction of the corresponding lithium or potassium enolates of α-chloroamides with aldehydes or ketones. When the reaction was carried out in the presence of H2O instead of D2O, the corresponding
通过使用二
碘化and和D 2 O实现3-芳基-2,3-环氧酰胺1的开环,得到具有总区域选择性的3-芳基-3-
氘代-2-羟基酰胺2。通过使相应的α-
氯酰胺的烯醇
锂或
钾的烯醇盐与醛或酮反应,可以容易地制备起始化合物1。当反应在H 2 O而不是D 2 O存在下进行时,分离出相应的3-芳基-2-羟基酰胺。对映体纯的3-芳基-2,3-环氧酰胺的处理提供了光学活性的3-芳基-2-羟基酰胺。