1,1-Dialkyl-2-acyl-3-hydroxypyrazolidinium and 2,2-dialkyl-5-hydroxyisoxazolidinium salts

Abstract

Salts of 1,1-dimethyl-2-acylhydrazines and 1,1-dialkylhydroxylamines add quantitatively to the double bond of oxo compounds with an unsubstituted vinyl substituent. The structure of the products depends on the nature of the substituent at the carbonyl group.¹H and¹³C NMR spectroscopy indicated that acrolein derivatives have the cyclic structure of 1,1-dialkyl-2-acyl-3-hydroxypyrazolidinium and 2,2-dialkyl-5-hydroxyisoxazolidinium salts, while derivatives of phenyl vinyl ketone and hydrazide salts are the corresponding linear, hydrazinium salts. Ring-chain tautomerism was found for several derivatives of methyl vinyl ketone in solution.

How to Cite
Zelenin, K. N.; Mel'nikova, L. F.; Bezhan, I. P.; Lagoda, I. V.; Chakchir, B. A. Chem. Heterocycl. Compd. 1998, 34, 1. [Khim. Geterotsikl. Soedin. 1998, 34, 1.]

For this article in the English edition, see DOI https://doi.org/10.1007/BF02251546