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Molecules. 2012 Jul 6;17(7):8174-85. doi: 10.3390/molecules17078174.

Synthesis and fungicidal activity of novel 2,3-disubstituted-1,3-benzoxazines.

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  • 1School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China.


A series of new 2,3-disubstituted-3,4-dihydro-2H-1,3-benzoxazines were prepared in moderate to excellent yields by aza-acetalizations of aromatic aldehydes with 2-(N-substituted aminomethyl)phenols in the presence of TMSCl. Their structures were confirmed by IR, ¹H-NMR, ¹³C-NMR, MS and elemental analysis. The fungicidal activities of the target compounds were preliminarily evaluated, and some compounds exhibited good activity against Rhizoctonia solani.

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