4-Methoxybenzyl alcohol → 7-chloro-5-(4-methoxybenzyloxy)-3-methylpyrido[4,3-d]pyrimidin-4(3H)-one

Participants

Reaction Conditions

Reaction Steps

To a solution of 4-methoxybenzylalcohol (596 μL, 4.78 mmol) in anhydrous DMF (20 mL) was added NaH (208 mg, 60% dispersion in mineral oil, 5.20 mmol) at 0° C. The mixture was stirred at 0° C. for 10 minutes before 5,7-dichloro-3-methylpyrido[4,3-d]pyrimidin-4(3H)-one (1.00 g, 4.35 mmol) was slowly added. The resulting mixture was heated at 80° C. overnight, cooled down, quenched with H2O (200 mL), and extracted with EtOAc (3×100 mL). The combined organic layer was dried over MgSO4 and evaporated under reduced pressure to afford crude 7-chloro-5-(4-methoxybenzyloxy)-3-methylpyrido[4,3-d]pyrimidin-4(3H)-one as a yellow solid.

Provenance & Evidence