688-74-4Relevant articles and documents
McCusker,Kilzer
, p. 372 (1960)
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Mikhailov,B.M.,Aronovich,P.M.
, (1961)
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A method for the production of sulfate or sulfonate esters
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Paragraph 0034; 0038, (2015/03/31)
The present invention relates to method for the production of sulfate or sulfonate esters essentially comprising the steps of adding sulfuric acid or sulfonic acid to boron acid in a medium with or without solvent (121), stirring the prepared mixture 8122), removing the precipitated boric acid (123), removing the solvent in case the solvent is used (124), producing dialkyl sulfate esters, mono alkyl sulfate esters and sulfonate esters of alkali metal salts (125), and based on the acidolysis of boron esters obtained from alcohol and boric acid with sulfuric acid or sulfonic acid.
Triorganyl- and diorganyloxozirconium hydridoborates - Synthesis and structures
Knizek, Joerg,Noeth, Heinrich,Schmidt-Amelunxen, Martin
, p. 5548 - 5557 (2012/02/04)
The reactions of Zr(OBu)4 and Zr(OEt)4 with H 3B·THF in THF led to HB(OR)2 and B(OR)3, but no zirconium tetrahydroborate [(RO)4-nZr(BH4) n] could be isolated. On the contrary, the reactions of [tBu 3CO]4-nZrCln and [tBu3SiO] 4-nZrCln with LiBH4 generated the tetrahydroborates [(RO)3Zr(BH4)] and [(RO) 2Zr(BH4)2]. These can be used to produce by hydroborate exchange dihydridodiorganyl borates [(RO)4-nZr(H 2BC8H14)n] and byproducts. The structures of the new zirconium hydridoborates have been determined by X-ray crystallography. Compound [(tBu3CO)3Zr(H 2BC8H14)] shows site-disordered dihydroborate units with agostic Zr-H-C interactions, while [(tBu3SiO) 2Zr(H2BC8H14)2] is quite symmetric (C2/c). The corresponding tetrahydridoborates possess in most cases μ31-bonded ZrH3BH groups. Compounds of the type [(RO)4-nZr(BH4)n] were obtained from the reaction of(RO)4Zr (R = Bu, Et) with H 3B·THF or that of (RO)4-nZrCln(n = 1, 2; R = tBu3C, tBu3Si) with LiBH4. Boryl group exchange with H2BC8H14- leads to (RO)4Zr(H2BC8H14)n with agostic Zr-H-B bonding when n = 1, whereas a symmetric ZrH2B compound results when n = 2. Copyright
Synthesis and antioxidant characteristics of borate esters used in lubricating oil
Shekarriz,Ghanbari,Taghipoor,Khalili,Hajialiakbari,Adibi,Soleymani
experimental part, p. 3646 - 3652 (2010/11/04)
In the present studies, the preparation of esters of boric acid with hindered phenols is reported, wherein the alkyl groups are branched on the α-carbon atoms. The products were evaluated in terms of their oxidative stability. In most cases, improvements in oxidative stability in ahydrocarbon media (cumene) were observed.