4-Bromobenzyl isocyanate → N-[(4-bromophenyl)methyl]-N'-(1-methylisoquinolin-5-yl)urea

Participants

Reaction Conditions

Reaction Steps

The product from Example 65A (480 mg, 3.04 mmol) in toluene (9 mL) was treated with 1-bromo-4-(isocyanatomethyl)benzene (0.43, 3.07 mmol) with stirring. After heating the mixture at 90° C. for 1 hour, the mixture was allowed to cool to room temperature, filtered, and the filter cake washed with toluene to provide the title compound. The corresponding di-hydrochloride salt was prepared using methanolic HCl (680 mg, 50%). 1H NMR (300 MHz, DMSO-d6) δ 8.74 (s, 1H), 8.38 (d, J=6.1 Hz, 1H), 8.25 (d, J=7.8 Hz, 1H), 7.78-7.85 (m, 2H), 7.53-7.61 (m, 3H), 7.32 (d, J=8.5 Hz, 2H), 7.11 (t, J=6.1 Hz, 1H), 4.34 (d, J=6.1 Hz, 2H), 2.88 (s, 3H); MS (ESI+) m/z 370/372 (M+H+, 79Br/81Br).

Provenance & Evidence