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Expired
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GB20660/59A
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Kali Chemie AG
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Kali Chemie AG
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Publication of GB856857ApublicationCriticalpatent/GB856857A/en
C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic System
C07F5/02—Boron compounds
C07F5/027—Organoboranes and organoborohydrides
Abstract
Boron trialkyls are prepared by reacting boron trioxide, activated by the addition of boric acid esters, with aluminium trialkyls. Preferably the boron trioxide used is obtained by vacuum dehydration of boric acid at an elevated temperature. The boron trioxide may be activated with 10-90% mol of boric acid ester. Boric acid methyl ester is preferred but other esters up to and including the butyl ester may be used. The reaction proceeds at any temperature between 20 and 180 DEG C. and may be effected in the presence of solvents or diluents such as mineral oils and hydrocarbons, aromatic compounds and ethers. an example, boron trioxide activated with boric acid methyl ester is dissolved in diethylene glycol dimethyl ether and reacted with aluminium triethyl at 75 DEG C. to give boron triethyl.
GB20660/59A1958-07-191959-06-16Method of producing boron trialkyls
ExpiredGB856857A
(en)