Preparation of β-aminoesters from ketene silyl acetals and N-(alkylamino)benzotriazoles
作者:Alan.R. Katritzky、N. Shobana、Philip A. Harris
DOI:10.1016/s0040-4039(00)94482-4
日期:1990.1
A wide variety of β-aminoesters are prepared in good yields by the reaction of lithium ester enolates derived from ketene silyl acetals with N-(alkylamino)benzotriazoles. The secondary β-aminoesters readily cyclize to β-lactams (2-azetidinones) on deprotonation.
通过衍生自乙烯酮甲硅烷基乙缩醛的锂酯烯醇化物与N-(烷基氨基)苯并三唑反应,可以以高收率制得各种各样的β-氨基酯。在去质子化时,仲β-氨基酯容易环化为β-内酰胺(2-氮杂环丁烷酮)。