Gold-Catalyzed Oxidative Coupling Reactions with Aryltrimethylsilanes
作者:William E. Brenzovich、Jean-François Brazeau、F. Dean Toste
DOI:10.1021/ol102194c
日期:2010.11.5
During continuing studies with a novel oxidative gold oxyarylation reaction, arylsilanes were found to be competent coupling partners, providing further evidence for an intramolecular electrophilic aromatic substitution mechanism. While providing yields complementary to those of the previously described boronic acid methods, the use of trimethylsilanes reduces the observation of homocoupling byproducts
Selective aromatic carbon–oxygen bond cleavage of trifluoromethoxyarenes: a trifluoromethoxy group as a convertible directing group
作者:Akinori Iijima、Hideki Amii
DOI:10.1016/j.tetlet.2008.08.002
日期:2008.10
An efficient method for selective activation of aromatic C–O bonds in trifluoromethoxyarenes is developed. Upon treatment with a metallic sodium/chlorotrimethylsilane system, trifluoromethoxyarenes undergo reductive dealkoxylation to provide the corresponding arylsilanes. Also the synthetic applications of the present reactions combined with ortho-metallation are described.