反应详情

The urea was prepared from 2-hydroxy 4-carbomethoxy aniline(0.167 g, 1 mmol) and 2-phenyl phenyl isocyanate(1 mmol) by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the desired compound(0.185 g, 50%). EI-MS m/z 363(M-H)-

1. customIt was purified by dilution with methylene chloride and precipitation with hexane
2. filtrationFiltering