B. Baudoin et al., A FACILE PREPARATION OF QUINAZOLIN-4-(3H)-ONES FROM O-AMIDO BENZONITRILES USING SODIUM PERBORATE, Synthetic communications, 23(20), 1993, pp. 2833-2837
The oxidation of o-amidobenzonitriles using sodium perborate followed
by cyclisation gives the corresponding quinazolin-4(3H)-ones in a 'one
pot' reaction under mild, non-hazardous conditions.