57509-00-9

Upstream product

• 4394-76-7 6-methyl-2H-pyran-2-one 
• 941-69-5 N-phenyl-maleimide 
• 57508-99-3 N-phenyl-6-methyl-3,6-endooxycarbonyl-1,2,3,6-tetrahydrophthalimide 
• 75581-73-6 N-phenyl-3-methyl-1,2-dihydrophthalimide 

Relevant 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

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

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.