Potassium Carbonate → phenyl 1-tert-butyl-1H-pyrazol-4-ylcarbamate

Participants

Reaction Steps

To a solution containing 1-tert-butyl-1H-pyrazol-4-amine (0.995 g, 7.16 mmmol) in THF (20 mL), phenylchloroformate (1.00 mL, 8.02 mmol) and K2CO3 (1.32 g, 9.52 mmol) were added at room temperature. After stirring overnight, the mixture was filtered and the solid washed with THF. The filtrate was concentrated to dryness and the residue was dissolved in DCM and the organic solution was washed with brine and dried over MgSO4 to yield phenyl 1-tert-butyl-1H-pyrazol-4-ylcarbamate as a solid (1.65 g, 89%). 1H NMR (300 MHz, CDCl3) δ 7.85 (1H, s), 7.30 (6H, m), 1.60 (9H, s).

Provenance & Evidence