反应详情

Using the procedure described in Example 306A, to a solution of 2-(5-amino-1-phenyl-1H-pyrazol-3-yl)-2-methylpropanenitrile (451 mg, 2 mmol) and potassium carbonate (359 mg, 2.6 mmol) in anhydrous DCM (4 ml) was added dropwise phenyl chloroformate (0.28 ml, 2.2 mmol) as a solution in DCM (2 ml) to afford phenyl 3-(2-cyanopropan-2-yl)-1-phenyl-1H-pyrazol-5-ylcarbamate (527 mg, 76%). 1H NMR (300 MHz, CDCl3) δ 1.74 (s, 6H), 6.66 (s, 1H), 7.05-7.60 (m, 11H); LC-MS (ESI) m/z 347 (M+H)+.