Hydrochloric Acid → HCID 68679736, compound

Participants

Reaction Steps

Sodium hydroxide (1.0 N, 200 ml) was added to a solution of 6-methoxy-7-benzyloxy-3,4-dihydroquinazolin-4-thione (30 g, 0.1 mol) in tetrahydrofuran (100 ml) and then methyl iodide (7.5 ml, 0.12 mol) was slowly added at ambient temperature over 30 minutes. The pH of the solution was then adjusted to 7 with hydrochloric acid (2.0 N), the reaction was diluted with water and the solid was recovered by suction filtration. Drying in vacuo yielded 4-(methylthio)-6-methoxy-7-benzyloxyquinazoline (29.5 g, 94% yield):

Provenance & Evidence