The synthesis of indolo[1,2-a]quinazolinone starting from 2-iodobenzamide and indole derivatives is reported. In this two-step procedure, indole is N-arylated with 2-iodobenzamide derivatives via Ullman coupling, followed by an intramolecular C–H amidation using a palladium catalyst.
![Graphical abstract: Syntheses of indolo[1,2-a]quinazolinone derivatives via palladium catalyzed intramolecular C–H amidation](http://hg.y866.cn/compound/lib/scimg/usr/1/C3RA44798G.jpg)