Phenyl chloroformate → phenyl 3-tert-butyl-1-(4-tert-butylphenyl)-1H-pyrazol-5-ylcarbamate

Participants

Reaction Steps

Using the procedure in Example 118A, 3-tert-butyl-1-(4-tert-butylphenyl)-1H-pyrazol-5-amine (996 mg, 3.67 mmol) and phenyl chloroformate (1.40 mL, 11.0 mmol) were reacted to give phenyl 3-tert-butyl-1-(4-tert-butylphenyl)-1H-pyrazol-5-ylcarbamate (957 mg, 2.45 mmol, 66%). 1H NMR (300 MHz, DMSO-d6) δ 10.05 (br s, 1H), 7.56-7.08 (m, 8H), 6.77 (s, 1H), 6.33 (s, 1H), 1.33 (s, 9H), 1.28 (s, 9H); LC-MS (ESI) m/z 392 (M+H)+.

Provenance & Evidence