Journal of Polymer Science Part A: Polymer Chemistry, Vol.33, No.5, 767-770, 1995
Synthesis of a Tetra(Maleimide) as Intermediate Compound in a Linear Diels-Alder Polyaddition of Bismaleimides with bis(2-Pyrone)S
The tetrafunctional products 3 and 6 were synthesized via Diels-Alder reaction of bis(2-pyrone) with bismaleimides in mol ratio 1:7. The chemical structure of these products was determined by H-1-NMR spectroscopy; the high degree of purity was confirmed by means of elemental analysis. The cyclization of the tetraimide 3 with 2 mol monopyrone 7 to the bicycle 8 was carried out.