The Suzuki−Miyaura cross-coupling of aryl phosphates using Ni(PCy3)2Cl2 as an inexpensive, bench-stable catalyst is described. Broad substrate scope and high efficiency are demonstrated by the syntheses of more than 40 biaryls and by constructing complex organic molecules. The poor reactivity of aryl phosphates relative to aryl halides is successfully employed to construct polyarenes by selective cross-coupling
Potassium Trimethylsilanolate Enables Rapid, Homogeneous Suzuki−Miyaura Cross-Coupling of Boronic Esters
作者:Connor P. Delaney、Vincent M. Kassel、Scott E. Denmark
DOI:10.1021/acscatal.9b04353
日期:2020.1.3
Herein, a mild and operationally simple method for the Suzuki−Miyaura cross-coupling of boronicesters is described. Central to this advance is the use of the organic-soluble base, potassium trimethylsilanolate, which allows for a homogeneous, anhydrous cross-coupling. The coupling proceeds at a rapid rate, often furnishing products in quantitative yield in less than 5 min. By applying this method
A revisit of organoaluminumreagents for cross-coupling reactions has opened up several types of C–C bond formation protocols through cleavage of phenolic/alcoholic C–O and C–F and ammonium C–N bonds. Catalyzed by the commercially available NiCl2(PCy3)2 catalyst, these reactions proceed smoothly with a wide range of substrates and broad functional group compatibility, providing a versatile methodology
作者:Anna M. Wagner、Amanda J. Hickman、Melanie S. Sanford
DOI:10.1021/ja408112j
日期:2013.10.23
with diaryliodoniumsalts. The site selectivity of these reactions is predominantly controlled by steric factors. Remarkably, Na2PtCl4-catalyzed naphthalene arylation proceeds with opposite site selectivity compared to that obtained with Na2PdCl4 as the catalyst. Preliminary mechanistic studies provide evidence for a Pt(II)/Pt(IV) catalytic cycle involving rate-limiting C-C bond-forming reductive elimination
Palladium-Catalyzed Suzuki-Miyaura Reactions of Potassium Aryl- and Heteroaryltrifluoroborates with Aryl- and Heteroaryl Triflates
作者:Gary A. Molander、Daniel E. Petrillo、Nicole R. Landzberg、John C. Rohanna、Betina Biolatto
DOI:10.1055/s-2005-871544
日期:——
The Suzuki-Miyaura cross-coupling of potassium aryl-and heteroaryltrifluoroborates with aryl- and heteroaryl triflates is reported. The catalyst system provides good to excellent yields using sterically hindered and electronically diverse coupling partners.