3-hydroxy-5-oxo-7,8-dihydro-6H-naphthalene-2-carboxylic acid 、 (3'-Trifluoromethyl-biphenyl-3-yl)-hydrazine hydrochloride 在
溶剂黄146 、 zinc(II) chloride 作用下,
生成
2-hydroxy-9-(3-(trifluoromethyl)phenyl)-6,11-dihydro-5H-benzo[a]carbazole-3-carboxylic acid