Sodium hydride → (E)-methyl 3-(5-phenyl-4-(pyridin-2-ylmethylamino)quinazolin-2-yl)acrylate

Participants

Reaction Conditions

Reaction Steps

A solution of trimethyl phosphonoacetate (0.225 g 1.00 mmol) in THF (20 mL) was added 95% sodium hydride (0.050 g, 2.0 mmol). Upon the completion of addition, the mixture was stirred at 0° C. for 30 min and then 5-phenyl-4-(pyridin-2-ylmethylamino)quinazoline-2-carbaldehyde (Example 212, prepared in a similar manner to the procedure described below, 0.340 g, 1.00 mmol) was added to the reaction mixture. The resulting mixture was stirred at room temperature for 14 h. After this time, the reaction mixture was quenched with saturated aqueous ammonium chloride solution (50 mL) and extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and filtrated. The filtrate was concentrated and the resulting residue was subjected to silica gel column chromatography using 5% MeOH in chloroform as the eluent to provide (E)-methyl 3-(5-phenyl-4-(pyridin-2-ylmethylamino)quinazolin-2-yl)acrylate (0.30 g, 72%) as a brown solid. LCMS Method V: retention time 1.94 min; [M+1]=411.2.

Provenance & Evidence