Claims
- 1. A process for the preparation of cyanoborohydrides having the formula:
- RBH.sub.3 CN
- wherein R is an alkali metal, a quaternary ammonium radical, or a phosphonium radical, said process comprising:
- (a) reacting a cyanide compound of the formula:
- RCN
- wherein R is a defined above, and a BH.sub.3 donor, and
- (b) heating the reaction product of (a) under refluxing conditions until substantially all of any isocyanoborohydride produced in step (a) is converted to cyanoborohydride.
- 2. A process as defined in claim 1 wherein the BH.sub.3 donor is the molecular complex BH.sub.3.tetrahydrofuran.
- 3. A process as defined in claim 2 wherein the molecular complex BH.sub.3.tetrahydrofuran is prepared by treating the molecular complex BF.sub.3.diethyl ether with a compound of the formula RBH.sub.4 wherein R is an alkali metal, a quaternary ammonium radical or a phosphonium radical.
- 4. A process as defined in claim 3 wherein the molecular complex BH.sub.3.tetrahydrofuran is separated from the by-products of its preparation prior to treatment of the cyanide compound with said complex.
- 5. A process as defined in claim 3 wherein the treatment of the cyanide compound with the BH.sub.3.tetrahydrofuran molecular complex is commenced without separation of said complex from the by-products of its preparation.
- 6. A process as defined in claims 1, 2, 3, 4 or 5 wherein R is sodium.
Parent Case Info
This is a continuation-in-part of Ser. No. 109,720 filed Jan. 4, 1980 which is a continuation of Ser. No. 943,015 filed Sept. 18, 1978, both now abandoned.
US Referenced Citations (3)
Non-Patent Literature Citations (1)
Entry |
Wade et al.; "Inorg. Chem.", 9 1970, pp. 2146-2150. |
Continuations (1)
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Number |
Date |
Country |
Parent |
943015 |
Sep 1978 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
109720 |
Jan 1980 |
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