1024586-09-1Relevant academic research and scientific papers
Micellar Catalysis for Ruthenium(II)-Catalyzed C?H Arylation: Weak-Coordination-Enabled C?H Activation in H2O
Yetra, Santhivardhana Reddy,Rogge, Torben,Warratz, Svenja,Struwe, Julia,Peng, Wentao,Vana, Philipp,Ackermann, Lutz
, p. 7490 - 7494 (2019)
Chemoselective C?H arylations were accomplished through micellar catalysis by a versatile single-component ruthenium catalyst. The strategy provided expedient access to C?H-arylated ferrocenes with wide functional-group tolerance and ample scope through weak chelation assistance. The sustainability of the C?H arylation was demonstrated by outstanding atom-economy and recycling studies. Detailed computational studies provided support for a facile C?H activation through thioketone assistance.
OrthoC-H arylation of arenes at room temperature using visible light ruthenium C-H activation
Charitou, Anastasios,Greaney, Michael F.,Ivanova, Maria,Sagadevan, Arunachalam,Vuagnat, Martin,Wang, Fen
, p. 4439 - 4443 (2020/05/18)
A ruthenium-catalyzedorthoC-H arylation process is described using visible light. Using the readily available catalyst [RuCl2(p-cymene)]2, visible light irradiation was found to enable arylation of 2-aryl-pyridines at room temperature for a range of aryl bromides and iodides.
Group exchange between ketones and carboxylic acids through directing group assisted Rh-catalyzed reorganization of carbon skeletons
Lei, Zhi-Quan,Pan, Fei,Li, Hu,Li, Yang,Zhang, Xi-Sha,Chen, Kang,Wang, Xin,Li, Yu-Xue,Sun, Jian,Shi, Zhang-Jie
supporting information, p. 5012 - 5020 (2015/05/05)
The Rh(I)-catalyzed direct reorganization of organic frameworks and group exchanges between carboxylic acids and aryl ketones was developed with the assistance of directing group. Biaryls, alkenylarenes, and alkylarenes were produced in high efficiency from aryl ketones and the corresponding carboxylic acids by releasing the other molecule of carboxylic acids and carbon monoxide. A wide range of functional groups were well compatible. The exchanges between two partners were proposed to take place on the Rh-(III) center of key intermediates, supported by experimental mechanistic studies and computational calculations. The transformation unveiled the new catalytic pathway of the group transfer of two organic molecules.
Cobalt-catalyzed direct arylation and benzylation by C-H/C-O cleavage with sulfamates, carbamates, and phosphates
Song, Weifeng,Ackermann, Lutz
supporting information; experimental part, p. 8251 - 8254 (2012/09/07)
Inexpensive cobalt catalysts enable the first direct arylation and benzylation of (hetero)arenes with aryl carbamates, sulfamates, and phosphates with ample scope. The non-radical C-H/C-O arylation reaction even proved viable at ambient temperature. Copyr
Extrusion of CO from aryl ketones: Rhodium(I)-catalyzed C-C bond cleavage directed by a pyridine group
Lei, Zhi-Quan,Li, Hu,Li, Yang,Zhang, Xi-Sha,Chen, Kang,Wang, Xin,Sun, Jian,Shi, Zhang-Jie
supporting information; experimental part, p. 2690 - 2694 (2012/04/23)
Snipping tool: The rhodium(I)-catalyzed extrusion of carbon monoxide from biaryl ketones and alkyl/alkenyl aryl ketones was developed to produce biaryls and alkyl/alkenyl arenes, respectively, in high yields (see scheme). A wide range of functionalities are tolerated. Not only does this method provide an alternative pathway to construct useful scaffolds, but also offers a new strategy for C-C bond activation. Copyright
Palladium-catalyzed direct ortho C-H arylation of 2-arylpyridine derivatives with aryltrimethoxysilane
Li, Wu,Yin, Zhangwei,Jiang, Xiaoqing,Sun, Peipei
experimental part, p. 8543 - 8548 (2011/12/03)
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 temperat
Mechanistic insight into direct arylations with ruthenium(II) carboxylate catalysts
Ackermann, Lutz,Vicente, Ruben,Potukuchi, Harish K.,Pirovano, Valentina
supporting information; experimental part, p. 5032 - 5035 (2010/12/25)
Mechanistic studies revealed ruthenium-catalyzed direct arylations to proceed through reversible C-H bond activation and subsequent rate-limiting oxidative addition with aryl halides, which led to the development of widely applicable well-defined rutheniu
Catalytic direct arylations in polyethylene glycol (PEG): Recyclable palladium(O) catalyst for C-H bond cleavages in the presence of air
Ackermann, Lutz,Vicente, Ruben
supporting information; experimental part, p. 4922 - 4925 (2010/01/16)
Two protocols for ruthenium- or palladium-catalyzed direct arylations In user-friendly polyethylene glycol (PEG) were devised, which set the stage for the development of user-friendly paliadium(0)-cataiyzed C-H bond functionalizations In the presence of a
Iron-catalyzed direct arylation through directed C-H bond activation
Norinder, Jakob,Matsumoto, Arimasa,Yoshikai, Naohiko,Nakamura, Eiichi
, p. 5858 - 5859 (2008/09/19)
An iron-catalyzed C-C bond formation reaction of a nitrogen-containing aromatic compound with an arylzinc reagent takes place at 0 °C in a good to quantitative yield. The reaction involves a C-H bond activation directed by a neighboring nitrogen atom. The important additives in this reaction are 1,10-phenanthroline, tetramethylethylenediamine, and 1,2-dichloro-2-methylpropane, in the absence of which a very low product yield was observed. Copyright
