Is There BN Bond-Length Alternation in 1,2:3,4:5,6-Tris(biphenylylene)borazines?
作者:Matthias Müller、Cäcilia Maichle-Mössmer、Peter Sirsch、Holger F. Bettinger
DOI:10.1002/cplu.201300110
日期:2013.9
The alternation of the BN bonds in the central borazinering of the overcrowded 1,2:3,4:5,6-tris(biphenylylene)borazine (2 a) and its tribromo derivative (2 g) is investigated by computational methods and compared with their experimentally obtained crystal structures. The calculations are performed with a meta-generalized-gradient-approximation (GGA) density functional (Tao-Perdew-Staroverov-Scuseria
The Overcrowded Borazine Derivative of Hexabenzotriphenylene Obtained through Dehydrohalogenation
作者:Sunanda Biswas、Matthias Müller、Christina Tönshoff、Klaus Eichele、Cäcilia Maichle-Mössmer、Adrian Ruff、Bernd Speiser、Holger F. Bettinger
DOI:10.1002/ejoc.201200322
日期:2012.8
Treatment of 9-chloro-9-bora-10-azaphenanthrene with potassium hexamethyldisilazide yields the borazinederivative of hexabenzotriphenylene (4). This compound, the formal trimer of 9,10-azaboraphenanthryne (6), is soluble in organic solvents and was fully characterized. The tetramer of 6 is formed as a byproduct in the previously described high-temperature synthesis of 4.
Solution Phase Reactivity of Dibenzo[c,e][1,2]azaborinine: Activation and Insertion into Si‐E Single Bonds (E=H, OSi(CH
<sub>3</sub>
)
<sub>3</sub>
, F, Cl) by a BN‐Aryne
作者:Constanze Keck、Jennifer Hahn、Divanshu Gupta、Holger F. Bettinger
DOI:10.1002/chem.202103614
日期:2022.1.24
Si-F Bond Activation: The BN triple bond of a BN-aryne is extremely reactive and can even activate the inert Si−F bond for insertion in solution. The mechanism involves coordinative interaction between the boron and fluorine atoms followed by nucleophilic attack of the nitrogen atom on silicon.
Si - F 键激活:BN-芳炔的 BN 三键具有极高的反应性,甚至可以激活惰性 Si−F 键以插入溶液中。该机制涉及硼和氟原子之间的配位相互作用,随后氮原子对硅进行亲核攻击。
BN-Phenanthryne: Cyclotetramerization of an 1,2-Azaborine Derivative
作者:Matthias Müller、Cäcilia Maichle-Mössmer、Holger F. Bettinger
DOI:10.1002/anie.201403213
日期:2014.8.25
Thermolysis of 9‐azido‐9‐borafluorene in heptane solution produces the tetramer of a BN‐phenanthryne. The isolation of the self‐trapping product provides evidence for the involvement of the BN‐aryne in the thermolysis reaction. Its formation may be rationalized by denitrogenation of the azide and ringenlargement.