Phenyl isocyanate → HCID 12876131, compound

Participants

Reaction Steps

In 300 ml of anhydrous dichloromethane, 13.0 g (0.1 mole) of 1,1-diethyl-3-methylurea and 12.0 g (0.1 mole) of phenylisocyanate were dissolved. Under cooling the mixture with stirring, 26.0 g (0.1 mole) of stannic chloride was added dropwise. The reaction was continued at a room temperature for 15 hours and the reaction mixture was treated by a procedure similar to that of mentioned in Example 1, and recrystallized from ethanol-petroleum ether to obtain 19.7 g (yield 79%) of 1,1-diethyl-3-methyl-5-phenylbiuret having a melting point of 88°-89.5° C.

Provenance & Evidence