of aryl cyanides with diboron in the presence of a rhodium/Xantphos catalyst and DABCO affords arylboronic esters via carbon-cyano bond cleavage. This unprecedented mode of reactivity for a borylrhodium species allows the regioselective introduction of a boryl group in a late stage of synthesis.
A new convenient method for the synthesis of dibenzo[a,h]anthracenes and picenes using ruthenium-catalyzed regioselective C–H arylation of aromatic ketones has been developed. Acetophenone derivati...
Organoboron compounds. Part VIII. Aliphatic and aromatic diboronic acids
作者:I. G. C. Coutts、H. R. Goldschmid、O. C. Musgrave
DOI:10.1039/j39700000488
日期:——
Diboronic acids (HO)2B·R·B(OH)2(where R = polymethylene, arylene, or thiophen-2,5-diyl) are prepared by reactions of methyl borate with difunctional Grignard reagents and are characterised by the formation of cyclic esters with various diols. The polymethylenediboronic acids are much more resistant to aerial oxidation than are the corresponding alkylboronic acids. All the diboronic acids undergo dehydration
Organoboron compounds. Part VII. Photochemical reactions of boron halides with aromatic hydrocarbons and aromatic ethers
作者:R. A. Bowie、O. C. Musgrave
DOI:10.1039/j39700000485
日期:——
arylboronic acids. The initial reaction products, the arylboron dihalides, appear to be formed by photolysis of the boron trihalides followed by reaction of the resulting dihalogenoboryl radicals with the aromaticcompounds. The reaction induced by visible light between benzene and boron tribromide gives low yields (after hydrolysis) of phenylboronic acid and p-phenylenediboronic acid and may occur
Anionic Conjugated Polyelectrolytes for FRET‐based Imaging of Cellular Membrane Potential
作者:Okhil K. Nag、Ji‐Eun Jeong、Van Sang Le、Eunkeu Oh、Han Young Woo、James B. Delehanty
DOI:10.1111/php.13233
日期:2020.7
confocal imaging. Importantly, cells labeled with FsPFc10 show excellent cellular viability with no adverse effect on cell membrane depolarization. During depolarization of membrane potential, HEK 293T/17 cells labeled with the donor‐acceptor FRET pair exhibit a greater fluorescence response in FluoVolt™ emission relative to when FluoVolt™ is used as the sole imaging probe. These results demonstrate the conjugated