Asymmetric synthesis. XXXIII. Diastereoselective alkylation of N,N-substituted amides
作者:Laurent Micouin、Vincent Schanen、Claude Riche、Angèle Chiaroni、Jean-Charles Quirion、Henri-Philippe Husson
DOI:10.1016/0040-4039(94)85366-5
日期:1994.9
A series of α-substituted amides 3 and 7–9 has been synthesized in enantiomerically pure form by diastereoselective alkylation of N-alkyl phenylglycinol amides 2 and 4–6 respectively. A rigid amide enolate has been postulated to explain the observed diastereoselectivity.
通过对映体纯净的形式分别通过N-烷基苯基甘氨醇酰胺2和4-6的非对映选择性烷基化合成了一系列α-取代的酰胺3和7-9。已假定使用刚性酰胺烯酸酯来解释观察到的非对映选择性。