411226-02-3Relevant articles and documents
A method of synthesizing joint boric acidfrequency that ester
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Paragraph 0047-0050, (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.
Tetra(pyrrolidino)diborane(4), [(C4H8N)2B]2, as a New Improved Alternative Synthetic Route to Bis(pinacolato)diborane(4) - Crystal Structures of the Intermediates
Ali, Hijazi Abu,Goldberg, Israel,Srebnik, Morris
, p. 73 - 78 (2007/10/03)
The compound tetra(pyrrolidino)diborane(4) (3) is an important new and alternative precursor for the preparation and synthesis of bis(pinacolato)diborane(4). The latter is the major intermediate among the diborane derivatives used for many addition and insertion reactions into multiple bonds. The crystal structure of 3 and its precursor, tris(pyrrolidino)borane, 1, were determined. In addition the solvolysis reactions and solution behavior of 3 with alcohols were examined.
