Simple Amine/Pd(OAc)<sub>2</sub>-Catalyzed Suzuki Coupling Reactions of Aryl Bromides under Mild Aerobic Conditions
作者:Bin Tao、David W. Boykin
DOI:10.1021/jo040147z
日期:2004.6.1
A new palladium catalyst (DAPCy) made from Pd(OAc)2 and commercially available, inexpensive dicyclohexylamine has been developed for the Suzuki coupling reaction of aryl bromides with boronic acids to give the coupling products in good to high yields. The air-stable catalyst was characterized and well-defined by X-ray crystallography. A catalytic system involving DAPCy in dioxane demonstrates a temperature-dependent
Suzuki–Miyaura reaction protocol of using bromophenyl fluorosulfonate as building block for the preparation of unsymmetrical terphenyls. The chemoselective cross-coupling of bromophenyl fluorosulfonate and arylboronicacids can be achieved by controlling base species without using any ligands. Under this methodology, various of m- and p-unsymmetrical terphenyls were obtained in moderate to good yields.
A one-pot protocol for the fluorosulfation and Suzuki coupling of phenols is described.
一种用于苯酚的氟磺化和铃木偶联的一锅法协议被描述。
Copper-Catalyzed Synthesis of Phenanthridine Derivatives under an Oxygen Atmosphere Starting from Biaryl-2-carbonitriles and Grignard Reagents
作者:Line Zhang、Gim Yean Ang、Shunsuke Chiba
DOI:10.1021/ol101490n
日期:2010.8.20
A copper-catalyzedsynthesis of phenanthridine derivatives was developed startingfrom biaryl-2-carbonitriles and Grignard reagents. The present transformation is carried out by a sequence of nucleophilic addition of Grignard reagents to biaryl-2-carbonitriles to form N-H imines and their Cu-catalyzed C−N bond formation on the aromatic C−H bond, where molecular oxygen is a prerequisite to achieve the
trans-Pd(OAc)2(Cy2NH)2 catalyzed Suzuki coupling reactions and its temperature-dependent activities toward aryl bromides
作者:Bin Tao、David W. Boykin
DOI:10.1016/j.tetlet.2003.08.116
日期:2003.10
amines for Suzuki coupling reactions of aryl bromides is described. A well-defined air-stable complex, trans-Pd(OAc)2(Cy2NH)2 effectively promotes Suzuki couplings of aryl bromides with a range of aryl boronic acids to give diaryl products in high yields. It also exhibits temperature-dependent activity toward aryl bromides bearing different electronic substituents under reaction conditions.