4-羟基吲哚

对甲苯磺酰氯

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

1-hydroxy-4-nitroindole