Homologous biphenyl and (diastereomeric) binaphthyl tertiary azepines and quaternary iminium salts were prepared from (+)-(S,S)-l-acetonamine. Both the amines and iminium ions behave as effective catalysts for the enantioselective epoxidation of unfunctionalized olefins (ee up to 83%).
由(+)-(S,S)-1-
丙酮胺制备同源
联苯和(非对映体)联
萘基叔氮杂
环庚烷和季
亚胺盐。胺和
亚胺离子都充当未官能化烯烃(ee高达83%)对映选择性环氧化的有效催化剂。