Lewis acid-catalyzed 2-arylquinazoline formation from N′-arylbenzimidamides and paraformaldehyde

An efficient procedure for the synthesis of 2-arylquinazolines from N′-arylbenzimidamides has been developed under transition-metal-free conditions. In this process, stable and low-toxicity paraformaldehyde was used as the carbon source. A broad range of functional groups were well tolerated in this reaction system.

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