2-cyano-6-nitro-trans-β-dimethylaminostyrene

1-[(4-甲基苯基)磺酰基]-1,5,6,7-四氢-4H-吲哚-4-酮

5-chloro-4-oxo-1-(p-toluenesulfonyl)-4,5,6,7-tetrahydroindole

5-bromo-1-(4-methylphenyl)sulfonyl-6,7-dihydro-5H-indol-4-one

4-(1,3-dithian-2-yl)-1-(p-toluenesulfonyl)indole