Rearrangement of α-hydroxy imines to α-amino ketones: Mechanistic aspects and synthetic applications
作者:Philippe Compain、Jacques Goré、Jean-Michel Vatèle
DOI:10.1016/0040-4020(96)00317-1
日期:1996.5
In refluxing diglyme, rearrangement of α-hydroxy imines bearing diversely substituted allyl groups or a 3-trimethylsilylpropargyl group on the α-carbon to the nitrogen afforded in good yields α-amino ketones. Migration of allyl or 3-trimethylsilylallyl groups occured without allylic transposition in contrast to the 1-methylallyl group. In the 3 cases studied, the rearrangement of enantioenriched α-hydroxy
在回流二甘醇二甲醚中,在α-碳上带有不同取代的烯丙基或3-三甲基甲硅烷基炔丙基的α-羟基亚胺重排至氮,可得到高产率的α-氨基酮。与1-甲基烯丙基相比,烯丙基或3-三甲基甲硅烷基烯丙基的迁移没有烯丙基移位而发生。在所研究的3个案例中,对映体富集的α-羟基亚胺发生了完全的1,2-手性转移。重排用于制备(+)-1-苄基-1-氮杂螺[5.5]十一烷-7-one,其是(-)-过氢组蛋白毒素合成中的前体。