cyclopentane/[PdCl(C3H5)]2 system catalyses efficiently the cross-coupling of aryl bromides with functionalised arylboronicacids. The electronic properties of the arylboronicacids seem to have a minor influence on the reaction rate. Better results were generally obtained for the reaction of electron poor aryl bromides associated with electron rich arylboronicacids rather than the contrary.
Neopentylphosphines as effective ligands in palladium-catalyzed cross-couplings of aryl bromides and chlorides
作者:Lensey L. Hill、Joanna M. Smith、William S. Brown、Lucas R. Moore、Paul Guevera、Emily S. Pair、Jake Porter、Joe Chou、Christopher J. Wolterman、Raluca Craciun、David A. Dixon、Kevin H. Shaughnessy
DOI:10.1016/j.tet.2008.02.037
日期:2008.7
The use of neopentylphosphine ligands in the palladium-catalyzed Suzuki, Sonogashira, Heck, and Hartwig–Buchwald couplings of arylbromides and chlorides are reported. Di-tert-butylneopentylphosphine (DTBNpP) provided highly active catalysts for the coupling of arylbromides at mild temperatures. Trineopentylphosphine, an air-stable trialkylphosphine, gave inactive catalysts at room temperature, but
The Suzuki-Miyaura Reaction Performed Using a Palladium-N-Heterocyclic Carbene Catalyst and a Weak Inorganic Base
作者:Frédéric Izquierdo、Martin Corpet、Steven P. Nolan
DOI:10.1002/ejoc.201500043
日期:2015.3
We gratefully acknowledge the EC for funding through the seventh framework program SYNFLOW, the ERC (Advanced Investigator Award ‘FUNCAT’ to SPN) and the EPSRC. S.P.N. is a Royal Society Wolfson Research Merit Award holder.
Sequential borylation of a first aryl iodide using a dialkylaminoborane followed by a Suzuki-Miyaura cross coupling of second aryl iodide ended up with an efficient, selective and practical synthesis of unsymmetrical biaryls. This tandem coupling shows a wide range of applicability.
Continuous-Flow Synthesis of Biaryls Enabled by Multistep Solid-Handling in a Lithiation/Borylation/Suzuki-Miyaura Cross-Coupling Sequence
作者:Wei Shu、Laurent Pellegatti、Matthias A. Oberli、Stephen L. Buchwald
DOI:10.1002/anie.201105223
日期:2011.11.4
it flow: An efficient and modular synthesis of biaryls under continuous‐flow conditions has been realized by a lithiation/borylation/Suzuki–Miyaura cross‐coupling sequence under ambient conditions. Aryl bromides and heteroaromatic precursors can be transformed in the room‐temperature lithiation reaction with nBuLi, followed by borylation and Suzuki–Miyauracoupling with the aid of ultrasonic irradiation