4-Chlorophenyl chloroformate → 4-Chlorophenyl 5-(2-fluoropropan-2-yl)isoxazol-3-ylcarbamate

Participants

Reaction Steps

Prepared from 5-(2-fluoropropan-2-yl)isoxazol-3-amine (40 mg, 0.278 mmol) and 4-chlorophenyl chloroformate (54 mg, 0.28 mmol) according to the procedure described in Example 122A Step 3, to afford 4-chlorophenyl 5-(2-fluoropropan-2-yl)isoxazol-3-ylcarbamate as a colorless solid (83 mg, 100%). 1H NMR (300 MHz, CDCl3) δ 8.11 (brs, 1H), 7.36-7.40 (m, 2H), 7.12-7.17 (m, 2H), 6.83 (s, 1H), 1.76 (d, J=21 Hz, 6H); LC-MS (ESI) m/z 299 (M+H)+.

Provenance & Evidence