作者:Christopher J. Teskey、Andrew Y. W. Lui、Michael F. Greaney
DOI:10.1002/anie.201504390
日期:2015.9.28
transition‐metal‐catalyzed, meta‐selectiveCHbromination procedure is reported. In the presence of catalytic [Ru(p‐cymene)Cl2}2], tetrabutylammonium tribromide can be used to functionalize the metaCH bond of 2‐phenylpyridine derivatives, thus affording difficult to access products which are highly predisposed to further derivatization. We demonstrate this utility with one‐pot bromination/arylation and
报道了过渡金属催化的间位选择性C - H 溴化过程的第一个例子。在催化[Ru(p-伞花烃)Cl 2 } 2 ]存在下,三溴化四丁基铵可用于官能化2-苯基吡啶衍生物的间位C - H键,从而提供难以获得的产物,该产物非常容易进一步衍生化。我们通过一锅式溴化/芳基化和溴化/烯基化程序证明了这种实用性,可在一步中分别提供间芳基化和间烯基化产物。
Directed<i>meta</i>-Selective Bromination of Arenes with Ruthenium Catalysts
Ru‐catalyzed direct CH activation/meta‐bromination of arenes bearing pyridyl, pyrimidyl, and pyrazolyl directing groups has been developed. A series of bromo aryl pyridines and pyrimidines have been synthesized, and further coupling reactions have also been demonstrated for a number of representative functionalized arenes. Preliminary mechanistic studies have revealed that this reaction may proceed through
Silver-Catalyzed Arylation of (Hetero)arenes by Oxidative Decarboxylation of Aromatic Carboxylic Acids
作者:Jian Kan、Shijun Huang、Jin Lin、Min Zhang、Weiping Su
DOI:10.1002/anie.201408630
日期:2015.2.9
arylation of heteroarenes by oxidative decarboxylation of aromatic carboxylic acids. To address this challenge, the silver‐catalyzed intermolecular Minisci reaction of aromatic carboxylic acids was developed. With an inexpensive silver salt as a catalyst, this new reaction enables a variety of aromatic carboxylic acids to undergo decarboxylative coupling with electron‐deficient arenes or heteroarenes regardless
Syntheses and structure of dinuclear metal complexes containing naphthyl-Ir bichromophore
作者:Ryo Ohyama、Masaki Mishima、Akiko Inagaki
DOI:10.1039/d1dt01853a
日期:——
of novel metalcomplexes were synthesized containing an Ir-cyclometalated bichromophore as a visible-light sensitizer. A new bichromophoric unit containing a naphthyl substituent and methyl substituents on the 2-phenylpyridine chelating ligand was synthesized and characterized for the first time. According to the increased crystallinity of the bichromophoric unit, novel Ir–M metalcomplexes (M = Pd