4-Hydrazinobenzoic acid → HCID 22147916, compound

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Reaction Steps

5-(4-Chloro-phenyl)-3-(3-chloro-thiophen-2-yl)-1-(4-carboxy-phenyl)-4,5-dihydro-pyrazole: The title compound was prepared from 3-(4-chloro-phenyl)-1-(3-chloro-thiophen-2-yl)-propenone and 4-hydrazinobenzoic acid by a procedure similar to that of Example 105a as a yellowish oil (166 mg, 74%). 1H NMR (CDCl3): 9.02 (s, 1H), 7.92-6.80 (m, 10H), 5.72 (m, 1H), 4.20 (m, 1H), 4.01 (t, 1H), 3.41 (m, 1H).

Provenance & Evidence