Methanol → 4-(3,4-Dimethoxyphenyl)-2-(2-hydroxyethyl)-6,7-dimethoxyquinazoline

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Reaction Steps

Methanol (15 ml) was added dropwise under reflux to a mixture of methyl 6,7-dimethoxy-4-(3,4-dimethoxyphenyl)-quinazoline-2-acetate (4.0 g), sodium borohydride (1.9 g) and tetrahydrofuran (80 ml). The mixture was stirred under reflux for 2 hours, poured into water and extracted with ethyl acetate. The ethyl acetate layer was washed with water, dried over magnesium sulfate. The solvent was evaporated under reduced pressure to give 6,7-dimethoxy-4-(3,4-dimethoxyphenyl)-2-(2-hydroxyethyl)quinazoline (3.0 g, 81%) which was then recrystallized from ethyl acetate. Colorless needle crystals. mp. 165°-166° C.

Provenance & Evidence