2-[(Trifluoroacetyl)amino]benzamide → 2-(Trifluoromethyl)-3,4-dihydroquinazolin-4-one

Participants

Reaction Steps

(Trifluoroacetamido)benzamide (73.0 g, 0.31 mole) was heated in ethylene glycol (150 ml) in an oil bath with stirring. The amide dissolved at around 130° and product began to precipitate out at 150°. The temperature was held at 150° for a further 1 hour before cooling. The solid was filtered off washing well with cold water to give the product, 55.7 g (84%).

Provenance & Evidence