Process for producing boranes
AssigneeAir Products and Chemicals, Inc.
InventorsSergei Vladimirovich Ivanov, Baldomero Casas
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Abstract
This idea relates to the synthesis of salts of dodecahydrododecaborate B12H12 (2-). In the proposed process a metal hydride is reacted with an alkyl borate in the presence of a Lewis base to produce Lewis base-borane compex, which is thermally decomposed to produce salts of B12H12 (2-), while alkyl borare is recovered from the reaction by-product and is recycled.
Claims32
A process for producing salts of dodecahydrododecaborate (-2) comprising reacting at least one metal hydride with at least one alkyl borate in the presence of at least one Lewis base to generate a Lewis base-borane complex, and reacting the Lewis base-borane complex with at least one metal salt to form a reaction product comprising salts of dodecahydrododecaborate (-2), and optionally recycling alkyl borate from the reaction by-products wherein reactants and reaction products of the process are substantially free of diboranes.
A process of 1 wherein the Lewis base comprises triethylamine.
A process for producing salts of dodecahydrododecaborate (-2) comprising reacting at least one metal hydride with at least one alkyl borate in the presence of at least one Lewis base to generate a Lewis base-borane complex, and reacting the Lewis base-borane complex with at least one metal salt to form a reaction product comprising salts of dodecahydrododecaborate (-2), and wherein the reaction product further comprises sodium tetramethoxyborate which is further reacted to produce sodium methoxide and trimethylborate wherein the reactants and reaction products of the process are substantially free of diboranes.
A process for producing salts of dodecahydrododecaborate (-2) comprising reacting at least one hydride with at least one alkylborate in the presence of at least one Lewis base to obtain a Lewis base-borane complex, and contacting the Lewis base-borane complex with sodium borohydride to obtain salts of dodecahydrododecaborate (-2) wherein said dodecahydroborate (-2) comprises Na2B12H12 wherein reactants and products of the process are substantially free of diboranes.
A process for producing salts of dodecahydrododecaborate (-2) comprising reacting at least one metal hydride with at least one alkyl borate in the presence of at least one Lewis base to form a reaction product comprising salts of dodecahydrododecaborate (-2), and recovering the dodecahydrododecaborate (-2) wherein reactants and reaction products of the process are substantially free of diboranes.
A process for producing salts of dodecahydrododecaborate comprising:
- reacting sodium hydride with trimethyl borate in the presence of at least one amine to form a borane triethylamine complex,
- reacting the borane triethylamine complex with at least one metal salt to form a salt of dodecahydrododecaborate,
- recycling trimethylborate;
- and wherein reactants and products of the process are substantially free of diboranes.
Dependencies are inferred from the claim text.