Allylic alcohols 5 and 7 and their acetates 6 and 8 are aziridinated using 3-acetoxyaminoquinazolinone 1; the preferred sense of diastereoselection in aziridination of 5 is inverted in aziridination of its acetate 6 whereas the preferred sense of diastereoselection from 7 is retained in aziridination of its acetate 8; this is interpreted as evidence for nucleophilic attack by the acetoxyamino nitrogen of 1 on the alkene with hydrogen bonding between the hydroxyl and N-acetoxy group present in aziridination of 5 but absent in the case of 7.
使用 3-乙酰氧基
氨基
喹唑啉酮 1 对烯丙基醇 5 和 7 及其
乙酸酯 6 和 8 进行
氮丙啶化;在对其
乙酸酯 6 进行
氮丙啶化时,对 5 进行非对映选择的优选方式发生了逆转,而在对其
乙酸酯 8 进行
氮丙啶化时,对 7 进行非对映选择的优选方式得以保留;这可以解释为 1 的乙酰氧基
氨基氮对烯的亲核攻击,羟基和 N-乙酰氧基之间的氢键存在于 5 的
叠氮反应中,但在 7 的情况下却不存在。