The crystalline adduct of (5S)-5-phenylmorpholin-2-one with formaldehyde and benzotriazole on treatment with acid generates an azomethine ylid which may be trapped with a range of dipolarophiles in yields superior to those using in situ generation methodology.
(5S)-5-苯基
吗啉-2-酮与
甲醛和苯并三唑的结晶加合物在用酸处理后生成偶氮甲碱叶立德,其可以用一系列亲偶极试剂捕获,其产率优于使用原位生成方法的产率。