4426-24-8Relevant articles and documents
A method of synthesizing joint boric acidfrequency that ester
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Paragraph 0037-0041, (2017/03/08)
The invention relates to a method for synthesizing bisdiboron. The method comprises the following steps: preparing a tri-substituted boron midbody from raw materials, namely, nafoxidine and boron tribromide which are easy to obtain from the market, in the presence of an acid-binding agent triethylamine; subsequently reacting with boron tribromide to obtain a bromo-boron midbody; coupling the product in the presence of metal sodium to obtain nafoxidine-substituted coupled boron; finally adding pinacol to react, thereby obtaining a target product, namely, the bisdiboron. The method has the advantages that nafoxidine can be directly recycled, and the triethylamine hydrobromide can be also directly recycled after being simply neutralized and dried. The midbodies obtained in the method disclosed by the invention can be directly used after the solvent is simply distilled, except the compound, the midbodies are all solids when being purified, the operation is easy, the solvent and the reagents can be recycled, the damage to the environment is reduced, and the process can be successfully expanded to be the scale greater than 10kg.
Addition reactions of bis(pinacolato)diborane(4) to carbonyl enones and synthesis of (pinacolato)2BCH2B and (pinacolato)2BCH2CH2B by insertion and coupling
Ali, Hijazi Abu,Goldberg, Israel,Srebnik, Morris
, p. 3962 - 3965 (2008/10/08)
The title compound adds to αβ-unsaturated carbonyls to give the products of 1,4-addition after hydrolysis of the intermediate boron enolates, in 68-86% isolated yield (four examples). In addition, we discovered that diazomethane reacts with bis(pinacolato
