79911-05-0Relevant academic research and scientific papers
Preparation of 3(5)-Phenyl-1-hydroxypyrazole 2-Oxide and 4-Methyl-3(5)-phenyl-1-hydroxypyrazole 2-Oxide
Hansen, John F.,Luther, Matthew L.
, p. 1163 - 1166 (2007/10/02)
Nitrosation of acrylophenone oxime or of methacrylophenone oxime with n-butyl nitrite in the presence of pyridine and copper(II) sulfate gives the copper complexes of the title compounds.The free 1-hydroxypyrazole 2-oxides are isolated by treating the copper complexes with dilute sodium hydroxide, filtration, and acidification of the basic filtrates.The title compounds are the first examples of 1-hydroxypyrazole 2-oxides in which the C3(5) ring position is unsubstituted.
FURAZANS AND FURAZAN OXIDES. IX. THE ISOXAZOLINIC REARRANGEMENT OF FUROXANS
Boulton, A. J.,Coe, David E.,Tsoungas, Petros G.
, p. 167 - 172 (2007/10/02)
Angeli's structure for the rearrangement product of 3-methylfuroxans produced by the action of base is shown to be correct.Ponzio's evidence for an alternative structure is reexamined and reinterpreted.
