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

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Reaction Steps

To a solution of 3-(4-chloro-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.1 g, 0.433 mmol) in CH2Cl2, was added 4-fluoro-phenyl isocyanate (0.065 g, 0.476 mmol) and stirred overnight. The resulting precipitate was filtered and washed with methylene chloride/hexane (1:1), and dried in vacuo to yield Compound 54 as a colorless solid (0.055 g, 33%). LCMS m/z (%)=405 M+H+ (37Cl, 20), 404 M+H+ (35Cl, 50), 1H NMR (400 MHz, acetone-d6) δ: 8.62 (bs, 1H), 8.101 (s, 1H), 8.081 (d, J=2.3 Hz, 2H), 7.967 (t, 1H), 7.885 (d, J=2.21 Hz, 2H), 7.558 (d, J=8.91 Hz, 1H), 7.473 (t, 1H), 4.67 (m, 1H), 4.238 (s, 3H), 1.873 (d, J=6.61 Hz, 3H), 1.713 (d, J=6.61 Hz, 3H).

Provenance & Evidence