BORONATE OLIGOMERS VIA DEHYDROGENATION OF DIOLS WITH THEXYLBORANE

As a series of our studies on novel boron-containing polymers, dehydrogenation reaction between bifunctional hydroborane compounds, i.e., thexylborane (1) and diols to produce a novel boronate oligomer is described here. When 1 was reacted with an equimolar amount of 1,6-hexanediol at room temperature for 1 day, a colorless wax was obtained after removing the solvent. The cryoscopic measurement of the molecular weight of the obtained was indicated the formation of oligomeric species. This oligomer was purified by coagulation with n-pentane, and characterized by spectroscopic analyses. The thermal stability of the resulting boronate oligomer is also described.