Double asymmetric induction as a mechanistic probe: the doubly diastereoselective conjugate addition of enantiopure lithium amides to enantiopure α,β-unsaturated esters and enantiopure α,β-unsaturated hydroxamates
作者:Stephen G. Davies、James A. Lee、Paul M. Roberts、James E. Thomson、Jingda Yin
DOI:10.1016/j.tet.2011.05.102
日期:2011.8
diastereoselective conjugate addition of the antipodes of lithium N-benzyl-N-(α-methylbenzyl)amide to a range of enantiopure α,β-unsaturated esters [derived from Corey’s 8-phenylmenthol chiral auxiliary] and enantiopure α,β-unsaturated hydroxamates [derived from our ‘chiral Weinreb amide’ auxiliary (S)-N-1-(1′-naphthyl)ethyl-O-tert-butylhydroxylamine] has been used as a mechanistic probe to determine the
将N-苄基-N-(α-甲基苄基)锂的对映体双非对映选择性共轭加成到一系列对映纯α,β-不饱和酯[源自Corey's 8-苯基薄荷醇手性助剂]和对映纯α,β-不饱和异羟肟酸盐[源自我们的“手性Weinreb酰胺”辅助(小号) - ñ -1-(1'-萘基)乙基- ø -叔-butylhydroxylamine]已被用作一种机械探针,以确定这些受体的活性构象。