918530-84-4Relevant academic research and scientific papers
Copper-catalyzed fluorination of 2-pyridyl aryl bromides
Mu, Xin,Zhang, Hao,Chen, Pinhong,Liu, Guosheng
, p. 275 - 280 (2014/01/06)
Copper(i)-catalyzed cross-coupling of aryl halides is the subject of extensive interest in synthetic chemistry, but the related catalytic fluorination is unsuccessful. Herein, we have developed a novel copper-catalyzed fluorination of aryl bromides using AgF as the fluorine source. In this transformation a pyridyl directing group is essential for successful catalytic fluorination. A XANES/EXAFS study indicated that the presence of the pyridyl group is essential to stabilize the Cu(i) species and accelerate oxidative addition of the aryl bromide. Further mechanistic studies implicated a Cu(i/iii) catalytic cycle in this Cu(i)-catalyzed fluorination, and final aryl C-F bond formation possibly proceeds through an irreversible reductive elimination of the ArCu(iii)-F species. This rare report of catalytic fluorination by a copper catalyst provides a valuable foundation for further development of Cu(i)-catalyzed fluorination of aryl halides.
ORGANIC COMPOUNDS
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Page/Page column 47, (2010/04/06)
The present invention relates to a compound of formula (I) (I) or a salt thereof, wherein the substituents are as defined in the description, to compositions and use of the compounds in the treatment of diseases ameloriated by inhibition of phosphatidylinositol 3-kinase.
Organic Compounds
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Page/Page column 53, (2009/07/10)
The present invention relates to compounds of formula I and its salts, wherein the substituents are as defined in the description, to compositions and use of the compounds in the treatment of diseases ameloriated by inhibition of phosphatidylinositol 3-kinase.
