Borverbindungen, 8. Mitteilung Umlagerung mittlerer O-B-O-Heterocyclen zu ringförmigen Oligomeren / Boron Compounds, Part 8 Rearrangement of Medium Sized O-B-O Heterocycles to Cyclic Oligomers

Abstract

The condensation of phenyldihydroxyborane with pentane-1,5-diols yields no 1,3,2-dioxabora-cyclooctanes but oligomeric boron heterocycles. Their formation can be explained by an exchange of ligands of the boron atom, a process analogous to metathetic ring-opening polymerisation.