Palladium-Catalyzed Direct <i>Ortho</i> C–H Arylation of 2-Arylpyridine Derivatives with Aryltrimethoxysilane
作者:Wu Li、Zhangwei Yin、Xiaoqing Jiang、Peipei Sun
DOI:10.1021/jo2016168
日期:2011.10.21
A Pd(OAc)2-catalyzed cross-coupling reaction between 2-arylpyridine and aryltrimethoxysilane in the presence of AgF and BQ in 1,4-dioxane was studied. After various reaction parameters (catalyst, oxidant, additive, solvent and reaction temperature) were examined, the optimal conditions for the reaction were identified. The synthesis is compatible to aryltrimethoxysilane with both electron-withdrawing
研究了在1,4-二恶烷中,在AgF和BQ存在下,Pd(OAc)2催化2-芳基吡啶与芳基三甲氧基硅烷之间的交叉偶联反应。在检查了各种反应参数(催化剂,氧化剂,添加剂,溶剂和反应温度)后,确定了反应的最佳条件。该合成与芳基三甲氧基硅烷在芳基部分上具有吸电子基团和给电子基团两者相容,且产率适中。提供了C–H键活化的动力学同位素效应(k H / k D)。
Pd-catalyzed desulfitative Hiyama coupling with sulfonyl chlorides
作者:Wei Zhang、Fang Liu、Ke Li、Baoli Zhao
DOI:10.1002/aoc.3139
日期:2014.5
Palladium‐catalyzed desulfitativeHiyama cross‐coupling reactions of various arylsulfonyl chlorides with aryltriethoxysilane have been achieved in good yields. The reported cross‐coupling reactions are tolerant to the common functional groups regardless of electron‐withdrawing or electron‐donating, making these transformations attractive alternatives to the traditional cross‐coupling approaches. Copyright
Cu-Catalyzed Arylation of Bromo-Difluoro-Acetamides by Aryl Boronic Acids, Aryl Trialkoxysilanes and Dimethyl-Aryl-Sulfonium Salts: New Entries to Aromatic Amides
作者:Satenik Mkrtchyan、Michał Jakubczyk、Suneel Lanka、Michael Pittelkow、Viktor O. Iaroshenko
DOI:10.3390/molecules26102957
日期:——
copper-catalyzed directarylation. Readily available and structurally simple aryl precursors such as arylboronicacids, aryl trialkoxysilanes and dimethyl-aryl-sulfonium salts were used as the source for the aryl substituents. The scope of the reactions was tested, and the reactions were insensitive to the electronic nature of the aryl groups, as both electron-rich and electron-deficient aryls were successfully
We describe herein a regioselective palladium(II)-catalyzedintermolecularhydroarylation of unactivated aliphatic alkenes with electronically and sterically diverse (hetero)arylsilanes under redox-neutral conditions. A removable bidentate 8-aminoquinoline auxiliary was readily employed to dictate the regioselectivity, prevent β-hydride elimination, and facilitate protodepalladation. This silicon-based
Ruthenium(<scp>ii</scp>)-catalyzed ortho-C–H arylation of diverse N-heterocycles with aryl silanes by exploiting solvent-controlled N-coordination
作者:Pradeep Nareddy、Frank Jordan、Michal Szostak
DOI:10.1039/c7ob00818j
日期:——
We report the first method for the direct, regioselectiveRu(II)-catalyzed oxidative arylation of C–H bonds in diverse N-heterocycles with aryl silanes by exploiting solvent-controlled N-coordination. The reaction takes advantage of the attractive features of organosilanes as coupling partners, providing proof of concept for N-directed Ru(II)-catalyzed C–H arylation. This novel, operationally-simple