The hydrazine reagent used in this reaction will participate in the cyclization.
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3,5-dimethyl-2-phenyl-2,5-dihydro-4H-pyrazolo[4,3-c]quinolin-4-one
2-(4-methoxybenzyl)-3-phenylbenzofuran
2-methyl-4-phenyl-1-(2-o-tolylethylidene)semicarbazide