7-Nitroquinazolin-4(3H)-one → 7-Amino-quinazolin-4-ol

Participants

Reaction Steps

Pd/C (100 mg) was added as a single portion to a degassed and flushed (3×Ar) suspension of 7-nitroquinazolin-4-one (1.15 g, 6.02 mmol) in methanol (150 mL). The resulting black mixture was degassed, flushed with hydrogen and allowed to stir for 4 hours. The mixture was filtered through celite, washed well with methanol, and the filtrate concentrated to give a tanned solid. This was purified by column chromatography (silica) using 10% methanol/ethyl acetate as the eluent. Combined fractions gave a beige solid (949 mg, 98% yield).

Provenance & Evidence