2-Substituted 3-benzyl-1,3-oxazinanes react with the Reformatsky reagent derived from ethyl 2-bromoacetate and zinc, using very mild conditions (0°C, 1h) leading regioselectively to 3-substituted ethyl 3-[(3-hydroxypropyl)benzylamino] propanoates in high yield.
2-取代的 3-苄基-1,3-恶嗪烷与源自 2-
溴乙酸乙酯和
锌的 Reformatsky 试剂反应,使用非常温和的条件(0°C,1h),区域选择性地生成 3-取代的乙基 3-[(3-羟丙基)苄
氨基]
丙酸酯,产率高。