The tendency to tautomeric equilibria of 5-(2-mercaptoacetylhydrazine)-3,5-dimethyl-∆ 2 -isoxazoline in solutions with the participation of not only the isoxazoline ring but also of ∆ 2 -pyrazoline and 1,3,4-thiadiazin-5(6H)-one forms was confirmed by 1 H and 13 C NMR spectroscopy. A new type of tautomeric transformations involving three different rings was found.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.