1,3-Dipolar cycloaddition of anhydro-4-hydroxy-1,3-oxazolium hydroxides with carbonyl compounds
Abstract
Cycloadducts of mesoionic compounds with carbonyl compounds were isolated for the first time in the reaction of isomunchnones (anhydro-4-hydroxy-1,3-oxazolium hydroxides) with benzoylacetaldehyde, p-chloro- and p-nitro-benzaldehyde, p-nitroacetophenone, and benzil.