Nucleophilic Ring Opening of 3-Benzyl-1,3-oxazinanes by Reformatsky Reagents. A Synthesis of β-Amino Ester Derivatives
作者:Angel Alberola、Maria A. Alvarez、Celia Andrés、Alfonso González、Rafael Pedrosa
DOI:10.1055/s-1990-27092
日期:——
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。