66901-96-0Relevant academic research and scientific papers
The Beckmann Reaction of Phenyl-substituted 1,3-Dioximes
Gnichtel, Horst,Boehringer, Ulrich
, p. 1507 - 1513 (2007/10/02)
The 1,3-diketones 1a - c react with hydroxylammonium choride to give isoxazolin-5-ols 2a - c predominantly, in addition to dioximes 3a and b, respectively.The anti (E,E) configuration of the dioximes was established by UV and 1H NMR.By Beckmann reaction of 3a, b and d, 4H-pyrazole N-oxides 4a, b and d were formed.The amphi (Z,E) configuration of 1,3-bis(hydroxyimino)-1,3-diphenyl-2-propanone (6) was established by 13C NMR.
