Polyaddition of bifunctional bicyclo ortho esters with acid chlorides accompanying double ring-opening isomerization

摘要

Polyaddition of bifunctional bicyclo ortho esters (BOEs) with bifunctional acid chlorides were carried out to afford quantitatively the corresponding polymers via a double ring-opening isomerization process. Polyaddition of bifunctional BOEs with a trifunctional acid chloride, 1,3,5-benzenetricarbonyl chloride, also proceeds satisfactorily to yield crosslinked polymers quantitatively. The mixtures of BOEs and acid chloride show zero to low shrinkage (0.6) during the polyaddition reaction.