dimethyl 5-hydroxy-3-(4-nitrophenyl)-1,2-diphenylpyrrolidine-2,5-dicarboxylate 在
柠檬酸 作用下,
以
甲苯 为溶剂,
生成 (2R*,3R*)-dimethyl 2,3-dihydro-3-(4-nitrophenyl)-1,2-diphenyl-1H-pyrrole-2,5-dicarboxylate 、 (2S*,3R*)-dimethyl 2,3-dihydro-3-(4-nitrophenyl)-1,2-diphenyl-1H-pyrrole-2,5-dicarboxylate