反应详情

Concentrated ammonia (10 ml) is added to a solution of phenyl N-(2-diisopropylaminoethyl)-N-(4,6-dimethyl-2-pyrimidinyl)carbamate hydrochloride (7.33 g., 0.018 mole) in 50 ml of tetrahydrofuran and the mixture is allowed to stand for twenty-four hours. It is concentrated, water and chloroform are added to the residue, the chloroform is separated and concentrated. Crystallization of the residue from hexane yields N-(2-diisopropylaminoethyl)-N-(4,6-dimethyl-2-pyrimidinyl)urea melting at 134°-136° C.

1. waitto stand for twenty-four hours
2. concentrationIt is concentrated
3. additionwater and chloroform are added to the residue
4. customthe chloroform is separated
5. concentrationconcentrated
6. customCrystallization of the residue from hexane