Polymer Bulletin, Vol.33, No.2, 183-186, 1994
Novel Polyester by Inverse Electron Demand Diels-Alder Polyaddition of Bispyrone with Divinyl Ether
The inverse Diels-Alder reaction of bispyrone 4 with divinyl ether 5 leads to the polymer 6, with the number-average molecular weight M(n) = 4000 (gel permeation chromatography). The chemical structure of the polymer is determined by H-1 NMR spectroscopy and model reaction. Moreover, the stereochemistry of the model compound was investigated by means of 2D COSY spectroscopy.