1009630-16-3Relevant academic research and scientific papers
Direct arylation of arene C-H bonds by cooperative action of NHCarbene-Ruthenium(II) catalyst and carbonate via proton abstraction mechanism
Oezdemir, Ismail,Demir, Serpil,Cetinkaya, Bekir,Gourlaouen, Christophe,Maseras, Feliu,Bruneau, Christian,Dixneuf, Pierre H.
, p. 1156 - 1157 (2008)
Direct functionalization of sp2 C-H bonds via ortho diarylation of 2-pyridyl benzene with arylbromides was achieved using ruthenium(II) catalysts containing a RuCl2(NHC) unit and generated from [RuCl2(arene)]2 and two types of NHC precursors, pyrimidinium and benzimidazolium salts, in the presence of Cs2CO3. DFT calculations from RuCl2(NHC)(2-pyridylbenzene) show that a proton abstraction mechanism, on cooperative actions of both the coordinated base and the Ru(II) center, is favored via a 13.7 kcal·mol-1 exothermic process affording an orthometalated intermediate with a 2.009 A Ru-C bond. Copyright
Synthesis of rhodium complexes derived from benzimidazolin-2-ylidene ligands and first used for the addition of arylboron to benzonitriles
Demir, Serpil,Yi?it, Murat,?zdemir, Ismail
, p. 21 - 26 (2013/06/27)
Benzimidazolium salts and their new rhodium complexes ([Rh(COD)(NHC)Cl]) were synthesized and characterized by elemental analysis, 1H NMR, 13C NMR, and IR spectroscopy. The addition of arylboron to benzonitriles in the presence of a catalytic amount of rhodium NHC complexes was examined. Corresponding carbonyl compounds were obtained in good yields. This method allows for the preparation of a wide variety of carbonyl compounds in moderate to excellent yields and displays a high level of activity for the addition of arylboron to nitriles.
Benzylic imidazolidinium, 3,4,5,6-tetrahydropyrimidinium and benzimidazolium salts: Applications in ruthenium-catalyzed allylic substitution reactions
Yasar, Sedat,Oezdemir, Ismail,Cetinkaya, Bekir,Renaud, Jean-Luc,Bruneau, Christian
experimental part, p. 2142 - 2149 (2009/04/04)
Imidazolidinium, tetrahydropyrimidinium and benzimidazolium salts were prepared. Upon reaction with tBuOK, they generate carbene ligands, which were associated in situ to [RuCp*(MeCN)3]PF6 to produce ruthenium catalysts that are acti
