Palladium-catalyzed direct 5-arylation of formyl- or acetyl-halothiophene derivatives
作者:Kassem Beydoun、Henri Doucet
DOI:10.1016/j.jorganchem.2010.12.021
日期:2011.5
found to catalyze the direct arylation of some functionalized halothiophene derivatives allowing the synthesis in only one step of polyfunctionalized arylated thiophenes. In the presence of 2-acetyl-3-chlorothiophene, 2-acetyl-4-chlorothiophene, 2-acetyl-3-bromothiophene diethylacetal or 2-(4-bromothiophen-2-yl)-[1,3]dioxolane, and a variety of aryl bromides, the 5-arylation products were obtained
Room-Temperature Direct Arylation of Polyfluorinated Arenes under Biphasic Conditions
作者:Olivier René、Keith Fagnou
DOI:10.1021/ol1006136
日期:2010.5.7
New biphasic conditions for the palladium-catalyzed direct arylation of electron-poor fluorinated arenes have been developed. Taking advantage of biphasic chemistry, the use of an immiscible mixture of water and an organic solvent allows complete solubilization of all components of the system, enabling the reaction to proceed at room temperature in yields up to 99%.
An organic cation as a silver(<scp>i</scp>) analogue for the arylation of sp<sup>2</sup> and sp<sup>3</sup> C–H bonds with iodoarenes
作者:Carlos Arroniz、J. Gabriel Denis、Alan Ironmonger、Gerasimos Rassias、Igor Larrosa
DOI:10.1039/c4sc01215a
日期:——
A general, cost-effective and sustainable replacement for silver in palladium catalysed direct arylations of C(sp2)–H and C(sp3)–H bonds.