Water → HCID 9862550, compound

Participants

Reaction Steps

6-Amino-4-benzylamino-7-ethylaminoquinazoline (4.5 g, 15.4 mmol) obtained, according to the procedures in Example 1, from 4-benzylamino-7-ethylamino-6-nitroquinazoline obtained in Reference Example 3 was suspended in ethanol (300 ml). To the suspension were added carbon disulfide (25 ml) and triethylamine (9.3 ml, 66.4 mmol), followed by heating under reflux for 6.5 hours. Water was added to the reaction mixture and the resulting crystals were filtered and recrystallized from a mixed solvent of dimethylformamide and ethanol to give the title compound (3.54 g, 60.6%).

Provenance & Evidence