Formamide → 6-Nitro-3,4-dihydroquinazolin-4-one

Participants

Reaction Steps

A mixture of 5-nitroanthranilic acid (2 g, 14.6 mmol) and formamide (2.9 ml, 72 mmol) is irradiated at 150 C in a microwave (power: 60 W) until TLC shows completion of reaction (20 minutes). After cooling, the reaction mixture is rinsed with ethyl acetate and evaporated under reduced pressure. The crude is purified by flash chromatography (silica gel; ethyl acetate/hexanes) to give the above product.

Provenance & Evidence