capable of carrying out the intramolecular α-amidoalkylation of a tertiary N-acyliminium ions when a methoxylated benzene ring is used as internal π nucleophile. The reaction can be applied to the synthesis of pyrrolo[2,1-a]isoquinolines and use of the sterically congested acid 3e is determinant to obtain good levels of enantioselection.
当使用甲氧基化的苯环作为内部π亲核试剂时,BINOL衍生的手性布朗斯台德酸能够进行叔N-酰基
亚胺离子的分子内α-酰胺烷基化反应。该反应可用于
吡咯并[2,1- a ]
异喹啉的合成,并且决定性使用空间拥挤的酸3e以获得对映体的良好
水平。