Synthesis of 2,3‐diaryl‐3,4‐dihydro‐2H‐1,3‐benzoxazines and their fungicidal activities

A series of novel 2,3‐diaryl‐3,4‐dihydro‐2H‐1,3‐benzoxazines have been prepared in high yields from o‐arylaminomethylphenols and aromatic aldehydes in the presence of SnCl4 for the first time, and their fungicidal activities were investigated too. Some of the products showed good fungicidal activities against Rhizoctonia solani justified by 100% activity of compound 1b. J. Heterocyclic Chem., (2010)