反应详情

The urea was prepared from 2-hydroxy 3,4-difluoro aniline (0.290 g, 2 mmol) and 2-bromo phenyl isocyanate (0.4 g) by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane (0.254 g, 37%). EI-MS m/z 343 (M+H)+

1. customIt was purified by dilution with methylene chloride and precipitation with hexane (0.254 g, 37%)