Room-Temperature Suzuki−Miyaura Couplings in Water Facilitated by Nonionic Amphiphiles
摘要:
Use of a dilute aqueous solution containing a nonionic amphiphile allows efficient Suzuki-Miyaura cross-couplings of arylboronic acids with a wide array of aryl halides and pseudohalides, including sterically hindered and lipophilic substrates, in most cases at room temperature.
Biaryl Synthesis via Decarboxylative Pd-Catalyzed Reactions of Arenecarboxylic Acids and Diaryliodonium Triflates
作者:Jean-Michel Becht、Claude Le Drian
DOI:10.1021/ol8011293
日期:2008.7.17
A novel simple and efficientsynthesis of biaryls via a Pd-catalyzed decarboxylative cross-coupling reaction of arenecarboxylic acids and diaryliodonium triflates is described. The PdCl2/DPEphos catalytic system in the presence of Ag2CO3 in DMSO was found to be the most efficient. Various biaryls, including sterically hindered biaryls, were synthesized with yields ranging from 37 to 85%.
Palladium-Catalyzed Stille Cross-Coupling Reaction of Aryl Chlorides using a Pre-Milled Palladium Acetate and XPhos Catalyst System
作者:John R. Naber、Stephen L. Buchwald
DOI:10.1002/adsc.200800032
日期:2008.5.5
highly active catalystsystem based upon a biaryl monophosphine ligand, XPhos, for the palladium-catalyzedStillereaction has been developed. This method allows for the coupling of arylchlorides with a range of tributylarylstannanes to produce the corresponding biaryl compounds in good to excellent yields (61–98%) in short reaction times (4 h). Palladium(II) acetate [Pd(OAc)2] and XPhos in a 1:1.1 ratio
Room-Temperature Suzuki−Miyaura Couplings in Water Facilitated by Nonionic Amphiphiles
作者:Bruce H. Lipshutz、Tue B. Petersen、Alexander R. Abela
DOI:10.1021/ol702714y
日期:2008.4.1
Use of a dilute aqueous solution containing a nonionic amphiphile allows efficient Suzuki-Miyaura cross-couplings of arylboronic acids with a wide array of aryl halides and pseudohalides, including sterically hindered and lipophilic substrates, in most cases at room temperature.