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ISSUE 6

Year 2007, Month 6 (Section Full Articles, Page 1190)

Reactions of Z-isomers of alkylaromatic 1,2-hydroxylamino oximes with methyl and arylglyoxals

S. A. Amitina, I. A. Grigor´ev, V. I. Mamatyuk, and A. Ya. Tikhonov

Reactions of the Z-isomers of alkylaromatic 1,2-hydroxylamino oximes (that contain the hydroxylamino group at the primary or secondary carbon atom) with methylglyoxal gave 6-acetyl-5,6-dihydro-4H-1,2,5-oxadiazines. Analogous reactions with arylglyoxals in the presence of trifluoroacetic acid afforded 6-aroyl-5,6-dihydro-4H1,2,5-oxadiazines. It was found that phenylglyoxal in the absence of the acid yielded N-substituted α-aroylnitrone which undergoes cyclization into the corresponding oxadiazine under the action of CF3COOH.

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