cinnamylamines attached to a chiral perhydrobenzoxazine occurs in high yields by reaction with benzeneselenenyl chloride in dichloromethane−methanol. The diastereoselection is dependent on the temperature of the reaction and the structure of the substituent at C-2 and can be rationalized by accepting a 1,4-asymmetric induction process after coordination of the selenium to the nitrogen atom of the allylamine
与手性过氢苯并恶嗪连接的肉桂胺的区域和非对映选择性甲氧基
硒烯化反应通过与
二氯甲烷中的苯
硒烯基
氯反应而高收率地发生。非对映体的选择取决于反应的温度和C-2处取代基的结构,并且可以通过在
硒与
烯丙胺系统的氮原子配位后接受1,4-不对称诱导过程来使其合理化。