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REaction of N-Arylbenzamidines with Arenenitrile N-Oxides

Szczepankiewicz W., Borowiak T., Kubicki M., Suwiński J., Wagner P.

Polish Journal of Chemistry

2002

Vol. 76 / nr 8

1137-1142

Looking for a method of 4-arylamino-4-aryl-3-aza-3-buten-2-one oximes preparation a reaction of N-arylbenzamidines with arenenitrile N-oxides (generated in situ form oximoyl chlorides) has been performed to produce unstable 5-amino-4,5-dihydro-1,2,4-oxadiazoles,which under aqueous acidic conditions hydrolyzed to acyclic N-benzoyloxy-N'-arylareneamidines. Structure of one of the latter compounds has been confirmed by X-ray analysis.