77475-09-3Relevant academic research and scientific papers
DIENE SYNTHESIS WITH 2-PYRONES AND 2-PYRIDONES. XXVIII. 1-ALKYL-3-METHYL-2-PYRIDONES AND THEIR THIO ANALOGS IN THE DIENE SYNTHESIS REACTION WITH N-PHENYLMALEIMIDE
Shusherina, N. P.,Pilipenko, V. S.,Kireeva, O. K.,Geller, B. I.,Stepanyants, A. U.
, p. 2047 - 2051 (2007/10/02)
1,4-Cycloadducts of 1-alkyl-3-methyl-2-pyridones and their thio analogs with N-phenylmaleimide were obtained, and the products from their catalytic hydrogenation were also obtained.It was shown that adducts with the endo configuration are formed under the conditions of kinetically controlled reactions (80-110 deg C).With increase in temperature they are converted (partially or completely) into the exo isomers.The configurations of the cycloadducts were assigned on the basis of the PMR spectra.
