Ammonia → 7-((6-Chloro-2-oxo-1,2-dihydropyrid-4-yl)methoxy)-6-methoxy-3,4-dihydroquinazolin-4-one

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Reaction Steps

A mixture of 7-((2-chloro-6-methoxy-4-pyridyl)methoxy)-6-methoxy-4-phenoxyquinazoline (400 mg, 0.95 mmol) and 2M hydrochloric acid (20 ml) was heated at reflux for 3 hours. The mixture was allowed to cool and adjusted to pH6-7 with aqueous ammonia solution. The resulting precipitate was collected by filtration washed with water and dried to give crude 7-((6-chloro-2-oxo-1,2-dihydropyrid-4-yl)methoxy)-6-methoxy-3,4-dihydroquinazolin-4-one (190 mg, 60%).

Provenance & Evidence