5-(2-diethylaminoethyl)-3-methyl-4-oxo-1,4,5,6,7,8-hexahydropyrrolo[3,2-c]azepine-2-carbaldehyde 、
5-溴氧化吲哚 在
2-(5-bromo-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-5-(2-diethylamino-ethyl)-3-methyl-5,6,7,8-tetrahydro-1H-pyrrolo[3,2-c]azepin-4-one 作用下,
以to obtain 2-(5-bromo-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-5-(2-diethylamino-ethyl)-3-methyl-5,6,7,8-tetrahydro-1H-pyrrolo[3,2-c]azepin-4-one 5 (59 mg, yield 67.8%) as a yellow solid的产率得到2-(5-bromo-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-5-(2-diethylamino-ethyl)-3-methyl-5,6,7,8-tetrahydro-1H-pyrrolo[3,2-c]azepin-4-one