Ethyl orthoformate → 7-Methyl-4(3H)-quinazolinone

Participants

Reaction Conditions

Reaction Steps

A suspension of 2-amino-4-methylbenzamide (1.2 g, 8.0 mmol) in CH(OEt)3 (10 mL) was heated in a sealed tube at 110° C. for 4 h. Then the reaction was quenched with aq. NaHCO3 solution at rt and the precipitate obtained was filtered and dried. The solid mass was purified by column chromatography to afford 1.1 g of the title product. 1H NMR (300 MHz, DMSO-d6): δ 12.14 (br s, 1H), 8.05 (s, 1H), 8.00 (d, J=7.8 Hz, 1H), 7.47 (s, 1H), 7.34 (d, J=7.8 Hz, 1H), 2.45 (s, 3H).

Provenance & Evidence