Potassium Carbonate → phenyl 1-phenyl-3-(trifluoromethyl)-1H-pyrazol-5-ylcarbamate

Participants

Reaction Steps

To a suspension of 1-phenyl-3-(trifluoromethyl)-1H-pyrazol-5-amine (1.136 g, 5 mmol) and K2CO3 (1.035 g, 7.5 mmol) in THF (20 mL) was dropped a solution of phenyl chloroformate (0.939 g, 6 mmol) in THF (10 mL). After stirred at room temperature overnight, the mixture was quenched with water and extracted with CH2Cl2. Extracts were dried over MgSO4, concentrated under reduced pressure, and dried under vacuum to afford phenyl 1-phenyl-3-(trifluoromethyl)-1H-pyrazol-5-ylcarbamate as solid (1.714 g, 99%). 1H NMR (300 MHz, CDCl3) δ 7.55 (m, 5H), 7.39 (m, 2H), 7.28 (m, 2H), 7.14 (m, 2H), 6.86 (m, 1H); LC-MS (ESI) m/z 348 (M+H)+.

Provenance & Evidence