Sodium Hydroxide → HCID 136186376, compound

Participants

Reaction Steps

2N Aqueous sodium hydroxide solution (2.8 ml) was added to a stirred solution of t-butyl 3-(8-methylquinazolin-4(3H)-on-2-yl)-4n-propoxycinnamate (Example 10; 0.79 g, 0.0018 mol) in methanol (2.8 ml) and the resulting solution heated under reflux for 4 hours. The solvent was removed by evaporation under vacuum, the residue-dissolved in water (25 ml) and this solution washed with ethyl acetate (4×30 ml). The aqueous solution was acidified with 2N hydrochloric acid and then extracted with ethyl acetate (3×30 ml). The organic extracts were combined, dried (Na2SO4) and evaporated under vacuum to give the title compound, which crystallized from ethyl acetate to give a white solid (0.41 g, 60%), m.p. 256°-257° C. Found: C,69.46; H,5.57; N,7.75. C21H20N4O4 requires C,69.22; H,5.53; N,7.69%.

Provenance & Evidence