Triethylamine → 2-Amino-7-(4-fluoro-phenyl)-4-methyl-7,8-dihydro-6H-quinazolin-5-one O-(2-dimethylamino-ethyl)-oxime

Participants

Reaction Steps

To a stirred solution of 2-amino-7-(4-fluoro-phenyl)-4-methyl-7,8-dihydro-6H-quinazolin-5-one oxime, compound 30, (109 mg, 0.38 mmol) in DMF (2 ml) under nitrogen was added sodium hydride (60% dispersion in oil) (18 mg, 0.44 mmol) and the mixture was stirred at ambient temperature for 10 min. 2-Dimethylaminoethylchloride hydrochloride (54 mg, 0.38 mmol) and triethylamine (52 μl, 0.38 mmol) were added to the reaction mixture, which was stirred and heated at 80° C. until complete disappearance of 2-amino-7-(4-fluoro-phenyl)-4-methyl-7,8-dihydro-6H-quinazolin-5-one oxime was observed by LC-MS. Ethyl acetate (5 ml) was added to the mixture and the solution was washed three times with water (3×5 ml). The organic phase was dried with MgSO4, filtered and the solvent removed under reduced pressure to furnish the title compound as a brown solid.

Provenance & Evidence