Untersuchungen zur Synthese von Polyethern aus Anhydropolyolen

Studies on the Synthesis of Polyethers from Anhydropolyols . By reaction of 1,4:3,6-dianhydro-D-sorbitol with base and αω-dihaloalkanes mono and dialkyl derivatives are obtained. The use of trans-1,4-dichloro-2-butene leads to oligomers up to the heptamer which are isolated and structurally assigned. Polymerisations with super acids of substituted tetrahydrofuranes such as the 1,4-anhydro-2,3-di-O-alkyl-D-erythritols lead to functionalized poly(oxytetramethylenes). By detailed studies of reaction parameters optimized conditions are achieved, and by polymer analyses the linear structures of these polyethers are demonstrated.