Low temperature catalytic reduction
OwnerRoy G. Gordoninventor
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Abstract
This invention relates to a method of utilizing alkali metal hydrides, such as sodium hydride and lithium hydride, under mild and safe conditions. The method may be used to produce bonds between hydrogen and elements such as carbon, silicon, germanium, tin, phosphorous, arsenic, antimony and tellurium. Many organic compounds, such as chlorides, bromides, ketones, aldehydes and acid chlorides, may also be reduced. The elements from the above list are bonded, before the reduction, to electronegative elements such as fluorine, chlorine, bromine, iodine, oxygen, sulfur, selenium and nitrogen. According to the invention, the alkali metal hydride is catalytically activated by a solution of an alkali borohydride in a suitable ether solvent, so that it rapidly replaces the halogens or other electronegative groups by hydrogen atoms.
Claims15
A process for reducing compounds having reducible electronegative functionality, said process comprising the step of carrying out said reduction in a reaction medium which comprises a reducing agent which is a hydride of an alkali metal, and a catalyst which is the borohydride of an alkali metal, and an ether solvent in which the borohydride catalyst is soluble.
A composition useful in effecting the catalytic reduction of organic halides and the like, said composition comprising,
- (1) an ether solvent for an alkali metal borohydride,
- (2) an effective quantity of an alkali metal hydride reducing agent, and
- (3) a catalytic quantity of the borohydride of an alkali metal.
A process for reducing a chemical compound having electronegative functionality said process comprising the step of dissolving a borohydride of an alkali metal in an ether solution to form a reaction medium, activating, in said reaction medium, a sodium hydride reducing agent with said borohydride;
- carrying out said reduction of said chemical compound in said reaction medium, and wherein a complex compound is formed by said solvent and a borane reaction product of said borohydride such that borohydride is regenerated by a reaction a said complex compound and said hydride.
Dependencies are inferred from the claim text.