4-Chloro-3-hydrazinylbenzoic acid hydrochloride 、 ethylbenzoylacetate 在
甲醇 、 乙醚 作用下,
以
水 为溶剂,
反应 1.0h,
以to yield 62.4 g (84%) of the titled compound as pale brown crystals的产率得到8-chloro-2-phenyl-1,3,4,5-tetrahydrobenz[cd]indol-5-one
The invention provides novel benzindole derivatives, processes for producing them, as well as a neuroprotective agent, an agent to prevent or treat diseases involving the degeneration, retraction or death of neurons, and an analgesic, each containing the benzindole derivatives as an active ingredient.