1-Phenylcarbamoylisatin 在
(+)-Ph-BPE 作用下,
以
二氯甲烷 、
氯仿 为溶剂,
反应 12.5h,
生成 dimethyl4-methyl-2'-oxo-1'-(phenylcarbamoyl)spiro[cyclopent[2]ene-1,3'-indoline]-3,5-dicarboxylate 、 (1R,4R,5R)-dimethyl4-methyl-2'-oxo-1'-(phenylcarbamoyl)spiro[cyclopent[2]ene-1,3'-indoline]-3,5-dicarboxylate 、
(1S,4S,5S)-dimethyl4-methyl-2'-oxo-1'-(phenylcarbamoyl)spiro[cyclopent[2]ene-1,3'-indoline]-3,5-dicarboxylate