Recovery of tris(aryl)borane from their tetrahydrofuran complexes
AssigneeAlbemarle Corporation
InventorsJohn Y. Lee, Jamie R. Strickler
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Abstract
This invention relates to methods for separating tris(aryl)boranes from tris(aryl)boranetetrahydrofuran complexes in hydrocarbon solvents via distillation.
Claims23
A process for removal of tetrahydrofuran from a tris(aryl)borane.tetrahydrofuran complex wherein said complex consists essentially of a tris(aryl)borane bound to tetrahydrofuran, which process comprises nonazeotropically distilling tetrahydrofuran at a temperature in the range of from about 115.degree. C. to about 160.degree. C. from a mixture comprising atris(aryl)borane.tetrahydrofuran complex and an inert liquid hydrocarbon solvent composition.
A process for removal of tetrahydrofuran from a tris(aryl)borane.tetrahydrofuran complex wherein said complex consists essentially of a tris(aryl)borane bound to tetrahydrofuran, which process comprises nonazeotropically distilling, in a distillation system, tetrahydrofuran and inert liquid hydrocarbon at a temperature in the range of from about 115.degree. C. to about 160.degree. C. from a mixture comprising a tris(aryl)borane.tetrahydrofuran complex and an inert liquid hydrocarbon solvent composition, while continuously removing tetrahydrofuran and inert liquid hydrocarbon from the distillation system and continuously adding inert liquid hydrocarbon solvent composition to the distillation system to replace distillate removed therefrom.
Dependencies are inferred from the claim text.