75581-80-5Relevant academic research and scientific papers
DIENE SYNTHESIS WITH 2-PYRONES AND 2-PYRIDONES. XXXIII. STEREOCHEMISTRY OF THE DOUBLE DIENE SYNTHESIS OF 2-PYRONES WITH N-PHENYLMALEIMIDE
Nesterova, T. L.,Shusherina, N. P.,Shulishov, E. V.
, p. 387 - 390 (2007/10/02)
The stereeochemistry of the successive addition of two molecules of N-phenylmaleimide to 2-pyrones was investigated for the first time.Irrespective of the structure, the reaction of the pyrones with N-phenylmaleimide takes place stereoselectively with the
Diene synthesis with 2-pyrones and 2-pyridones. XXVII. Thermolysis of 1,4-cycloadducts of 2-pyrones with N-phenylmaleimide
Shusherina, N. P.,Nesterova, T. L.,Polyakova, O. V.
, p. 1111 - 1115 (2007/10/02)
It was shown for the first time that the thermolysis of 1,4-cycloadducts of 2-pyrones with N-phenylmaleimide gives either N-phenylimides of 1,2-dihydrophthalic acids or their dimers, depending on the temperature, the heating time, and the structure of the initial adducts.It was established that the N-phenylimides of 1,2-dihydrophthalic acid and 3-bromo-1,2-dihydrophthalic acid dimerize at 196 deg C by a diene synthesis mechanism.
