336880-93-4Relevant academic research and scientific papers
A neutral Gold(III)-Boron transmetalation
Hofer, Manuel,Gomez-Bengoa, Enrique,Nevado, Cristina
, p. 1328 - 1332 (2014)
The occurrence of direct transmetalation between gold(III) and boron species during gold-catalyzed cross-coupling reactions has recently become the subject of intense discussion. In this work, we investigate the transmetalation reaction between discrete, stable gold(III) complexes and boron reagents. Interestingly, electron-rich arylboronic acids remain unreactive under neutral conditions, whereas electron-deficient species undergo transmetalation in a highly efficient manner.
Influence of the diol structure on the Lewis acidity of phenylboronates
Adamczyk-Wozniak, Agnieszka,Jakubczyk, Michal,Jankowski, Piotr,Sporzynski, Andrzej,Urbanski, Piotr M.
, p. 415 - 419 (2013)
A series of cyclic esters of pentafluorophenylboronic acid have been obtained and their Lewis acidity evaluated experimentally by a modified Gutmann method. The results based on 31P NMR measurements were compared with those determined by quantum mechanical calculations at the DFT-VSXC/pcS-2 level of theory. The differences in Lewis acidity are discussed on the basis of electronic and geometric parameters. The calculations revealed that the complexes of investigated esters with Et3PO have multiple conformers of a wide range of calculated 31P NMR shielding constants. Additionally, a correlation between the calculated O-B-O angle of esters and the experimental acceptor number was found. Copyright
