反应详情

733 g of 2,4-diamino-toluene, 1069 g ethyl carbamate, 1160 g ethanol (approximately 96%) and 5.5 g zinc octoate were reacted in the apparatus described in Example 1 for 6.1 hours at 200° C. After the apparatus had cooled and the pressure had been reduced, the reaction mixture was removed, filtered and analyzed by high pressure liquid chromatography (HPLC). A yield of 1220 g (76% of the theoretical yield) of 2,4-bis-(ethoxy carbonylamino)-toluene was obtained.

1. temperatureAfter the apparatus had cooled
2. customthe reaction mixture was removed
3. filtrationfiltered