作者:Yong Yang、Joyce Fen Yan Lim、Xinying Chew、Edward G. Robins、Charles W. Johannes、Yee Hwee Lim、Howard Jong
DOI:10.1039/c5cy00507h
日期:——
and Cy*Phine-nBu), demonstrated exceptional broad-based performance and operational simplicity in the copper-freeSonogashiracross-coupling of challenging (hetero-)aryl chlorides and terminal alkynes. Modifications to the periphery of the ligand scaffold showed modest improvements in the reaction rate when more electron-donating substituents were incorporated, which hints at potential design upgrades
利用演化的间-叔芳基膦配体Cy * Phine的不同变异,开发了三种新颖的钯配合物。这些空气和水分稳定的配合物PdCl 2 L 2(L = Cy * Phine,Cy * Phine-CF 3和Cy * Phine- n Bu)在无铜Sonogashira中表现出优异的广泛性能和操作简便性具有挑战性的(杂)芳基氯化物和末端炔烃的交叉偶联。当引入更多的供电子取代基时,对配体支架外围的修饰显示出反应速率的适度提高,这暗示了未来潜在的设计升级。
Post-synthetic modified MOF for Sonogashira cross-coupling and Knoevenagel condensation reactions
作者:Chizoba I. Ezugwu、Bibimaryam Mousavi、Md. Ali Asraf、Zhixiong Luo、Francis Verpoort
DOI:10.1016/j.jcat.2016.10.015
日期:2016.12
(1) which was synthesized by solvothermal reaction of 1,3-bis(4-carboxyphenyl)imidazolium chloride (H2L+Cl−) and Zn(NO3)2·6H2O. This new material, 1-Pd, was characterized by PXRD, TGA, SEM, TEM, 1H and 13C NMR, FTIR and XPS measurements. This catalyst exhibited an excellent activity for both Sonogashira cross-coupling and Knoevenagel condensation reaction retaining its catalytic and uniform distribution
reactions of dibromoalkenes with arylboronic acids using a hydrazone–Cu catalyst system proceeded smoothly under mild conditions to afford the corresponding internal alkyne derivatives in good yields. Furthermore, we also succeeded in the synthesis of o-allyloxy(ethynyl)benzene derivatives, which are known to be effective precursors of various heterocyclic compounds, through this reaction.
An N-heterocyclic carbene based MOF catalyst for Sonogashira cross-coupling reaction
作者:Chizoba I. Ezugwu、Bibimaryam Mousavi、Md. Ali Asrafa、Akshay Mehta、Harsh Vardhan、Francis Verpoort
DOI:10.1039/c5cy01944c
日期:——
The post-synthetic modification of azolium containing MOFs generated a new heterogeneous N-heterocycliccarbene catalyst (1-Pd), which is very active for Sonogashira cross coupling reaction.
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。