Molecular Rearrangements. Synthesis, Stability, and Rearrangements of 2-Imino-2H-isoxazolopyrimidines and 2-Aminoisoxazolopyrimidinium Salts

Article abstract of DOI:10.1021/jo00152a032

2-Amino derivatives of isoxazolo<2,3-a>pyrimidinium salts were prepared by the condensation of 3,5-diaminoisoxazole with acetylacetone and benzoylacetone, respectively.The free base, e.g., 2-amino-2H-isoxazolo<2,3-a>pyrimidine system, was found to be unst