3,4-Difluorophenyl isocyanate → 1-[3-(4-Bromo-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3,4-difluoro-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 3,4-difluoro phenyl isocyanate (0.041 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 51 as a colorless solid (0.096 g, 80%). LCMS m/z (%)=467 M+H+ (81Br, 88), 465, M+H+ (79Br, 95), 1H NMR (400 MHz, DMSO-d6) δ: 8.816 (bs, 1H), 8.68 (bs, 1H), 7.5 (s, 1H), 7.412 (d, J=2.51 Hz, 2H), 7.389 (d, J=2.51 Hz, 2H), 7.199 (t, 1H), 7.167 (s, 1H), 6.983 (t, 1H), 3.989 (m, 1H), 3.596 (s, 3H), 1.225 (d, J=6.61 Hz, 3H), 1.078 (d, J=6.61 Hz, 3H.

Provenance & Evidence