硫代乳酸 、
3-(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)imino-5,7-dimethyl-1H-indol-2-one 在
Montmorillonite KSF 作用下,
反应 0.08h,
以95%的产率得到3'-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-5,5',7-trimethyl-1,3-dihydro-spiro[2H-indole-3,2'-[1,3]-thiazolidine]-2,4'-dione