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Reaction of 1,3- hydroxylamino oximes with formaldehyde, acetaldehyde, and acetone

Research paper by A. Ya. Tikhonov, L. B. Volodarskii

Indexed on: 01 Feb '77Published on: 01 Feb '77Published in: Chemistry of Heterocyclic Compounds



Abstract

The products of condensation of 1,3-hydroxylamino oximes with formaldehyde have 1-hydroxy-1,2,5,6-tetrahydropyrimidine 3-oxide (cyclic form) structures, the products of condensation with acetone have N-(3-oximino-substituted)-α,α-dimethylnitrone (open form) structures, and the products of condensation with acetaldehyde exist in solution in the form of a tautomeric mixture of the open and cyclic forms. The products of condensation of alkyl-aromatic 1,3-hydroxylamino oximes with acetaldehyde have N-(3-oximino-substituted)-α-nitrone (open form) structures.