CO<sub>2</sub>
Conversion into Esters by Fluoride-Mediated Carboxylation of Organosilanes and Halide Derivatives
作者:Xavier Frogneux、Niklas von Wolff、Pierre Thuéry、Guillaume Lefèvre、Thibault Cantat
DOI:10.1002/chem.201505092
日期:2016.2.24
A one‐step conversion of CO2 into heteroaromatic esters is presented under metal‐free conditions. Using fluoride anions as promoters for the C−Si bond activation, pyridyl, furanyl, and thienyl organosilanes are successfully carboxylated with CO2 in the presence of an electrophile. The mechanism of this unprecedented reaction has been elucidated based on experimental and computational results, which
TBAF-Catalysed silver oxide-mediated cross-coupling of functional trimethysilylpyridines: access to arylpyridines and bihetaryl compounds
作者:Frédéric Louërat、Heather Tye、Spencer Napier、Michael Garrigou、Mark Whittaker、Philippe C. Gros
DOI:10.1039/c0ob00710b
日期:——
The concomitant use of silver oxide and catalytic amount of TBAF allowed the efficient and chemoselective coupling of readily available 4-chloro- and 4-methyl-2-trimethyl-silyl-pyridines with heteroaromatic and aromatic halides. Based on control experiments, a mechanism involving the formation of a pyridylsilver intermediate and TBAF recycling is postulated.