4-Fluorophenyl isocyanate → 1-[3-(4-Bromo-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-fluoro-phenyl)-urea

Participants

Reaction Steps

To a solution of 3-(4-bromo-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.08 g, 0.258 mmol) in CH2Cl2, was added 4-fluoro phenyl isocyanate (0.036 g, 0.263 mmol) and stirred overnight. The resulting precipitate was filtered and washed with methylene chloride/hexane (1:1), and dried in vacuo to yield Compound 50 as a colorless solid (0.037 g, 32%). LCMS m/z (%)=449 M+H+ (81Br, 58), 447 M+H+ (79 Br, 63), 1H NMR (400 MHz, CDCl3) δ: 7.5 (s, 1H), 7.346 (d, 1.95 Hz, 2H), 7.326 9 bs, 1H), 7.151 (d, J=4.77 Hz, 1H), 7.124 (t, 1H), 6.995 (d, J=1.87 Hz, 2H), 6.869 (d, J=5.42 Hz, 1H), 6.847 (d, J=4.71 Hz, 1H), 4.045 (m, 1H), 3.651 (s, 3H), 1.333 (d, J=6.61 Hz, 3H), 1.160 (d, J=6.61 Hz, 3H).

Provenance & Evidence