Method of synthesis of lithium substituted borohydride reagents and method of synthesis of reactive lithium hydride
US6268537A · kind A · utility
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20Claims
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Key dates
| Filing date | May 25, 1999 |
| Grant date | Jul 31, 2001 |
| Priority date | — |
| Expiry date | May 25, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F5/027
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A synthetic route for forming lithium trisubstituted borohydride compounds comprises the step of reacting a processed lithium hydride reactant with a trisubstituted borane wherein the reaction is maintained for a period of time in a temperature range of approximately 15.degree. C. to approximately 42.degree. C. A method of synthesizing LiH comprises the step of reacting an alkyl lithium (for example, n-butyl lithium) with hydrogen in the presence of tetrahydrofuran. The reaction temperature is preferably maintained in the range of approximately -78.degree. C. to approximately 25.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.