Copper-Catalyzed Cross-Coupling of Vinyliodonium Salts and Zinc-Based Silicon Nucleophiles
作者:Liangliang Zhang、Martin Oestreich
DOI:10.1021/acs.orglett.8b03714
日期:2018.12.21
A silylation of vinyliodonium salts using zinc-based silicon reagents as nucleophiles is reported. This cross-coupling is catalyzed by copper, and vinylsilanes are obtained in high yield likely following a Cu(I)/Cu(III) reaction mechanism. The procedure is operationally simple, neither air- nor moisture-sensitive, and tolerant of a range of functional groups. The new method is an addition to the still
CuI-catalyzed Suzuki coupling reaction of organoboronic acids with alkynyl bromides
作者:Shihua Wang、Min Wang、Lei Wang、Bo Wang、Pinhua Li、Jin Yang
DOI:10.1016/j.tet.2011.05.031
日期:2011.7
A CuI-catalyzed Suzuki cross-coupling reaction of organoboron derivatives with alkynyl bromides has been developed. In the presence of CuI (10 mol %) and 8-hydroxyquinoline (20 mol %), organoboron derivatives including aromatic and alkenyl boronic acids, potassium aryltrifluoroborates, and sodium tetraphenylborate reacted smoothly with 1-bromo-2-substituted acetylene to generate the corresponding cross-coupling
已经开发出CuI催化的有机硼衍生物与炔基溴化物的Suzuki交叉偶联反应。在CuI(10 mol%)和8-羟基喹啉(20 mol%)的存在下,有机硼衍生物(包括芳族和烯基硼酸,芳基三氟硼酸钾和四苯基硼酸钠)与1-溴-2-取代的乙炔平稳反应,生成相应的交叉偶联产物在C 2 H 5 OH中具有良好至极好的收率。重要的是要注意,芳族N,O-配体8-羟基喹啉是该反应最有效的配体。
The reaction of vinylboronic acids with vinylmercuric acetates; A new synthesis of divinylmercurials
作者:Rajender S. Varma、Sastry A. Kunda、George W. Kabalka
DOI:10.1016/0022-328x(84)80651-8
日期:1984.11
The reaction of vinylboronic acids with vinylmercuric acetates produces symmetrical divinylmercurials in high yield. The reaction can be utilized to prepare functionally substituted mercurials. Attempts to prepare unsymmetrical divinylmercurials resulted in redistribution products yielding symmetrical and unsymmetrical divinylmercury compounds.
An Efficient and Recyclable Magnetic-Nanoparticle-Supported Palladium Catalyst for the Suzuki Coupling Reactions of Organoboronic Acids with Alkynyl Bromides
acetylenes to generate the corresponding cross-coupling products in good to excellent yields in ethanol. In addition, it is possible to recover and reuse the supported palladium catalyst at least 16 times without significant loss of its catalytic activity. palladium catalyst - Suzuki coupling reaction - organoboronic acids - alkynyl bromides - magneticnanoparticles