No abstract

CÀ N bond formation is crucial for the preparation of synthetic organic nitrogen-containing heterocyclic compounds. This work provides a facile and highly efficient strategy (ca. ∼ 92 %) for the synthesis of quinazoline compounds, which involves tandem CÀ H/NÀ H bond functionalization using metal-free conditions without the need for an external oxidant. Mean-while, the reaction system exhibits good functional group tolerance and a wide substrate scope. Furthermore, our corresponding isotope tracking experiments have shown that dimethyl sulfoxide acts as a carbon source. Finally, this work affords a new strategy toward the further design and synthesis of heteroaromatic rings.