Research progress in transition metal-free catalytic synthesis of quinazoline-4(3H)-ones
The latest progress in transition metal-free catalytic synthesis methods of quinazoline-4(3Hf)-ones is reviewed.It is pointed out that although great progress has been obtained in the synthesis of quinazoline-4(3H)-ones,there is still a need to vigorously develop more economical and green routes,such as the development of robust and recyclable catalysts with high catalytic activity.