4-Chlorophenyl Isocyanate → 1-[3-(4-Bromo-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4Chloro-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-chloro 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 49 as a colorless solid (0.052 g, 42%). LCMS m/z (%)=463 (M+H+79Br, 35Cl, 41), 465 M+H+ (81Br 35Cl88), 467H+ (81 Br 37Cl, 21), 1H NMR (400 MHz, acetone-d6) δ: 8.30 (bs, 1H), 8.24 (bs, 1H), 7.685 (d, J=2.66 Hz, 1H), 7.577 (d, J=1.92 Hz, 2H), 7.74 (d, J=2.65, 1H), 7.292 (d, J=1.9 Hz, 2H), 7.280 (d, J=1.6 Hz, 1H), 7.135 (d, J=9.01 Hz, 1H), 4.256 (m, 1H), 3.811 (s, 3H), 1.447 (d, J=6.61 Hz, 3H), 1.288 (d, J=6.61 Hz, 3H).

Provenance & Evidence