Hydrochloric Acid → 2-[7-(4-Fluoro-benzyloxy)-4-oxo-4H-quinazolin-3-yl]-acetamide

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7-(4-Fluoro-benzyloxy)-3H-quinazolin-4-one: A mixture of sodium hydride (55%, 3.2 g, 73 mmol), 4-fluorobenzyl alcohol (9.2 g, 73 mmol) and 7-fluoro-3H-quinazolin-4-one (3.0 g, 18 mmol) in DMF (75 mL) was heated at 140° C. for 2 h. The resulting suspension was cooled to rt and the mixture acidified to pH 3 with HCl (conc.). The resulting precipitate was then filtered off, washed with water and diethylether. Partial purification by chromatography on silica gel eluting with ethyl acetate:hexane (2:1) afforded the title compound (3.2 g, 66%) as an off-white solid. MS: m/e=271.3 (M+H+).

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