886509-20-2Relevant academic research and scientific papers
New benzimidazolium N-heterocyclic carbene precursors and their related Pd-NHC complex PEPPSI-type: Synthesis, structures, DFT calculations, biological activity, docking study, and catalytic application in the direct arylation
?zdemir, ?smail,?zdemir, Nam?k,Bensouici, Chawki,Benzerka, Saida,Boulebd, Houssem,Gürbüz, Nevin,Khiri-Meribout, Naima,Sandeli, Abd El-Krim
, (2021/09/28)
New benzhydryl-5,6-dimethyl-(3-methylbenzyl)benzimidazolium salt as N-heterocyclic carbene precursors and their related new Pd-NHC complex PEPPSI-type with the general formula [PdBr2(NHC)(pyridine)] were prepared and theoretically studied. Quan
1,3-Dioxane Functionalized Pd-PEPPSI Catalyst for Direct Arylation of Heteroaromatics
Ulu, ?znur Do?an
, (2021/08/09)
A series of benzimidazolium salts (1a-d) and their Pd-PEPPSI complexes (pyridine-enhanced precatalyst preparation, stabilization, and initiation) (2a-d) were prepared to catalyze the direct arylation of heteroaromatics (2-acetylthiophene and 2-furaldehyde) with various aryl bromides. The structures of all isolated compounds were elucidated based on spectroscopic methods (1H and 13C NMR, FT-IR and LC-MS spectroscopy). Under optimized reaction conditions, C5-arylated products were obtained in moderate to excellent yields in the direct arylation of heteroaromatics.
Synthesis of [PdBr2(benzimidazole-2-ylidene)(pyridine)] complexes and their catalytic activity in the direct C[sbnd]H bond activation of 2-substituted heterocycles
Lasmari, Sarra,Gürbüz, Nevin,Boulcina, Raouf,?zdemir, Nam?k,?zdemir, ?smail
, (2021/02/27)
A series of unsymmetrical 1,3-disubstituted benzimidazolium chlorides, 2a-f, having two nitrogen atoms substituted by various alkyl groups were synthesized as N-heterocyclic carbene (NHC) precursors in high yields. The benzimidazolium salts are readily co
Synthesis, structures, DFT calculations, and catalytic application in the direct arylation of five-membered heteroarenes with aryl bromides of novel palladium-N-heterocyclic carbene PEPPSI-type complexes
?zdemir, ?smail,?zdemir, Nam?k,Benzerka, Saida,Boulebd, Houssem,Gürbüz, Nevin,Khiri-Meribout, Naima,el-Krim Sandeli, Abd
, p. 17878 - 17892 (2021/10/12)
A new series of Pd-catalysts based on an N-heterocyclic carbene PEPPSI-type ligand (PEPPSI = pyridine enhanced precatalyst preparation stabilization and initiation) with the general formula [Pd(ii)Br2(NHC)(pyridine)] was synthesized and fully characterize
Palladium-carbene catalyzed direct arylation of five-membered heteroaromatics
?zdemir, ?smail,?zdemir, Nam?k,Kalo?lu, Murat,Kalo?lu, Nazan,Y?ld?r?m, ?lkay
, (2020/01/08)
Due to the industrial importance of bi(hetero)arenes, the synthesis of these compounds by homogeneous Pd-catalyzed direct arylation is an important research topic in modern organic chemistry. In this study, PEPPSI-type, (PEPPSI = Pyridine Enhanced Precatalyst Preparation Stabilization and Initiation), new Pd-catalysts with N-heterocyclic carbene ligand were synthesized, and they were used as catalysts in the synthesis of bi(hetero)arenes by direct arylation process. The structures of Pd-carbene complexes were elucidated by different spectroscopic and analytical techniques such as NMR, FT-IR and elemental analysis. The more detailed structural characterization of one of the complexes was determined by single-crystal X-ray diffraction study. Pd-carbene complexes were used as effective catalysts in the direct arylation of five-membered heteroaromatics such as thiophene, furan and thiazole derivatives with (hetero)aryl bromides for 1 h, in the presence of 1 mol% of catalyst loading, and successful results were obtained.
Palladium(II)-N-Heterocyclic Carbene Complexes: Efficient Catalysts for the Direct C-H Bond Arylation of Furans with Aryl Halides
Kalo?lu, Murat,?zdemir, ?smail
, (2018/05/03)
This paper contains the synthesis and characterization of the seven new benzimidazolium salts and their corresponding new palladium(II)-NHC complexes with the general formula [PdX2(NHC)2], (NHC?=?N-heterocyclic carbene, X?=?Cl or Br)
Synthesis and evaluation of thiosemicarbazones functionalized with furyl moieties as new chemosensors for anion recognition
Santos-Figueroa, Luis E.,Moragues, María E.,Raposo, M. Manuela M.,Batista, Rosa M. F.,Costa, Susana P. G.,Ferreira, R. Cristina M.,Sancenón, Félix,Martínez-Má?ez, Ramón,Ros-Lis, José Vicente,Soto, Juan
experimental part, p. 7418 - 7428 (2012/09/25)
A family of heterocyclic thiosemicarbazone dyes (3a-f and 4) containing furyl groups was synthesized in good yields, characterized and their response in acetonitrile in the presence of selected anions was studied. Acetonitrile solutions of 3a-f and 4 show
