been developed using redox-active esters prepared in situ from alkyl carboxylates and N-hydroxyphthalimide tetramethyluronium hexafluorophosphate (PITU). This undivided cell one-pot method enables C–C bond formation using inexpensive, benchtop-stable reagents with isolated yields up to 95% with good functional group tolerance, which includes nitrile, ketone, ester, alkene and selectivity over other aromatic
Ruphos-mediated Suzuki cross-coupling of secondary alkyl trifluoroborates
作者:Adri van den Hoogenband、Jos H.M. Lange、Jan Willem Terpstra、Melle Koch、Gerben M. Visser、Martin Visser、Ties J. Korstanje、Johann T.B.H. Jastrzebski
DOI:10.1016/j.tetlet.2008.04.129
日期:2008.6
A Ruphos-mediated Suzukicross-coupling between (hetero)aryl bromides and secondary alkyltrifluoroborates is described using palladium catalysis. The Ruphos ligand showed superior properties as compared to S-Phos in this type of reaction. This method constitutes a valuable extension to current methods for the straightforward production of secondary-alkylated (hetero)aryl derivatives.