- Diene synthesis with 2-pyrones and 2-pyridones. XXVII. Thermolysis of 1,4-cycloadducts of 2-pyrones with N-phenylmaleimide
-
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.
- Shusherina, N. P.,Nesterova, T. L.,Polyakova, O. V.
-
p. 1111 - 1115
(2007/10/02)
-