Suzuki−Miyaura Coupling of Aryl Tosylates Catalyzed by an Array of Indolyl Phosphine−Palladium Catalysts
摘要:
A family of indolyl phosphine ligands was applied to Suzuki-Miyaura cross-coupling of aryl tosylates. Catalyst loading can be reduced to 0.2 mol % for coupling of nonactivated aryl tosylate. A challenging example for room temperature coupling is realized. The scope of this highly active Pd/L2 system can be extended to other boron nucleophiles, including trifluoroborate salts and boronate esters. The ligand structural comparisons toward the reactivity in tosylate couplings are also described.
SYNTHESIS OF BINUCLEATING LIGANDS OF PYRIDYLPHENOL
作者:Huichang Zhang、Man Kin Tse、Kin Shing Chan
DOI:10.1081/scc-100103995
日期:2001.1.1
The synthesis of pyridylphenol-type dinucleating triand penta-dentate ligands has been accomplished by crosscouplings.
吡啶基苯酚型双核三和五齿配体的合成已通过交叉偶联完成。
Base effect on the cross-coupling of bulky arylboronic acid with halopyridines
作者:Huichang Zhang、Kin Shing Chan
DOI:10.1016/0040-4039(95)02343-7
日期:1996.2
Base has been shown to have a remarkable effect on acceleration of the rate of Suzuki coupling of sterically bulky boronic acid with halopyridines in non-aqueous solvent.
已显示在非水溶剂中,碱对促进体积庞大的硼酸与卤代吡啶的Suzuki偶联速率有显着影响。
Base and Cation Effects on the Suzuki Cross-Coupling of Bulky Arylboronic Acid with Halopyridines: Synthesis of Pyridylphenols
Strong base and large size cation have been shown to accelerate the rate and the yield of Suzuki coupling of a sterically bulky boronic acid with halopyridines in DME for the synthesis of pyridylphenols.
Palladium-catalyzed Buchwald-Hartwig Amination and Suzuki-Miyaura Cross-coupling Reaction of Aryl Mesylates
作者:Shun Wong
DOI:10.15227/orgsyn.092.0195
日期:——
Enantioselectivity Increases with Reactivity: Electronically Controlled Asymmetric Addition of Diethylzinc to Aromatic Aldehydes Catalyzed by a Chiral Pyridylphenol
作者:Huichang Zhang、Feng Xue、T. C. W. Mak、Kin Shing Chan