4-iodo-3-methanesulfonylamino-benzoic acid methyl ester 、
吲哚 、
2-dimethylaminomethyl-1-methanesulfonyl-1H-indole-5-carboxylic acid methyl ester 以After workup and normal phase chromatography, obtained 2-dimethylaminomethyl-1-methanesulfonyl-1H-indole-6-carboxylic acid methyl ester (3.02 g, 73% yield) as a yellow solid的产率得到2-dimethylaminomethyl-1-methanesulfonyl-1H-indole-6-carboxylic acid methyl ester