ethyl 5-fluoro-3-formyl-1H-indole-2-carboxylate 、
3-bromomethyl-5-fluoro-benzo[b]thiophene 以to give 5-fluoro-1-(5-fluoro-benzo[b]thiophen-3-ylmethyl)-3-formyl-1H-indole-2-carboxylic acid ethyl ester as white solid的产率得到5-fluoro-1-(5-fluoro-benzo[b]thiophen-3-ylmethyl)-3-formyl-1H-indole-2-carboxylic acid ethyl ester