concisely synthesize highly enantiomerically enriched 5-alkylsubstituted pyrrolidine-3-carboxylic acids, organocatalytic enantioselective Michael addition reactions of 4-alkyl-substituted 4-oxo-2-enoates with nitroalkanes have been developed. Using the developed reaction method, 5-methylpyrrolidine-3-carboxylic acid with 97% ee was obtained in two steps.
为了简明地合成高度对映体富集的5-烷基取代的
吡咯烷-3-
羧酸,已经开发了4-烷基取代的4-氧代-2-烯酸酯与硝基
烷烃的有机催化对映选择性迈克尔加成反应。使用改进的反应方法,分两步获得具有97%ee的5-甲基
吡咯烷-3-
羧酸。