m-Tolylhydrazinium(1+) chloride → 1-m-tolyl-3-(trifluoromethyl)-1H-pyrazol-5-amine

Participants

Reaction Steps

Following the procedure in Example 161A Step 3, m-tolylhydrazine hydrochloride (1.15 g, 7.30 mmol) and 4,4,4-trifluoro-3-oxobutanenitrile (1.0 g, 7.30 mmol) were reacted to give 1-m-tolyl-3-(trifluoromethyl)-1H-pyrazol-5-amine (380 mg, 1.57 mmol, 22%). 1H NMR (300 MHz, DMSO-d6). δ 7.60-7.20 (m, 4H), 5.82-5.61 (m, 3H), 2.59 (s, 3H); LC-MS (ESI) m/z 242 (M+H)+.

Provenance & Evidence