Ethyl 4-oxocyclohexanecarboxylate → Ethyl 9-benzoyl-1,2,3,4-tetrahydrocarbazole-3-carboxylate

Participants

Reaction Steps

Following a procedure similar to that of Example 31 and using 11 g. of 1-benzoyl-1-phenylhydrazine hydrochloride and 7.62 g. of ethyl cyclohexanone-4-carboxylate (prepared in situ from the corresponding ethylene ketal) there was obtained 6.2 g. of the title compound; m.p. 67°-69°C. (ether-pentane).

Provenance & Evidence