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

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Reaction Steps

To a solution of 3-(2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.1 g, 0.433 mmol) in CH2Cl2, was added 4-fluoro phenyl isocyanate (0.0652 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 44 as a colorless solid (0.050 g, 30%). LCMS m/z (%)=369 M+H+, (100), 1H NMR (400 MHz, DMSO-d6) δ: 8.59 (bs, 1H), 8.52 (bs, 1H), 7.42-7.35 (m, 4H), 7.28-7.27 (d, J=2.7 Hz, 1H), 7.057 (m, 3H), 6.07 (d, J=1.76 Hz, 1H), 4.10 (m, 1H), 3.66 (s, 3H), 1.24 (d, J=6.56 Hz, 6H).

Provenance & Evidence