Synthesis of quinazolinones via Cp*Co( iii )-catalyzed C–H functionalization of primary amides with oxadiazolones

system, where oxadiazolone could function as an internal oxidant to maintain the catalytic cycle, is reported. Amide-directed C-H bond activation and oxadiazolone decarboxylation are key to the success of this traceless, atom- and step-economic, and cascade approach for the construction of the quinazolinone skeleton.