α-Acylamino-carboxamide azides 1, obtained from Ugi reactions of o-azidobenzaldehyde, amines, benzoylformic acid, and isocyanides, reacted with triphenylphosphine to give various 2-acylquinazolines 3 and/or 3H-1,4-benzodiazepin-3-ones 4 in moderate to good yields via sequential Staudinger and intramolecular aza-Wit...
