作者:Robin B. Bedford、Charlotte J. Mitchell、Ruth L. Webster
DOI:10.1039/c003074k
日期:——
Solvent-free reaction conditions facilitate a range of aromatic C-H functionalisations that traditionally require acidic or disfavoured solvents. These reactions include selective ortho- and meta-arylation of aryl carbamates and anilides and selective halogenation reactions.
A Meta-Selective Copper-Catalyzed C–H Bond Arylation
作者:Robert J. Phipps、Matthew J. Gaunt
DOI:10.1126/science.1169975
日期:2009.3.20
For over a century, chemical transformations of benzenederivatives have been guided by the high selectivity for electrophilic attack at the ortho/para positions in electron-rich substrates and at the meta position in electron-deficient molecules. We have developed a copper-catalyzed arylation reaction that, in contrast, selectively substitutes phenyl electrophiles at the aromatic carbon–hydrogen sites