1201005-45-9Relevant articles and documents
Imidazole-aryl coupling reaction via C[sbnd]H bond activation catalyzed by palladium supported on modified magnetic reduced graphene oxide in alkaline deep eutectic solvent
Shariatipour, Monire,Salamatmanesh, Arefe,Jadidi Nejad, Masoumeh,Heydari, Akbar
, (2019/11/20)
By employing reusable heterogeneous catalyst, modified magnetic reduced graphene oxide-supported palladium catalyst (MRGO@ DAP- AO-Pdll), the regioselective C-5 arylation of imidazoles via C[sbnd]H bond activation pathway for the preparation of
Dimetallic Palladium-NHC Complexes: Synthesis, Characterization, and Catalytic Application for Direct C?H Arylation Reaction of Heteroaromatics with Aryl Chlorides
Lee, Jhen-Yi,Ghosh, Debalina,Kuo, Ya-Ting,Lee, Hon Man
, p. 648 - 658 (2020/01/02)
A series of dimetallic palladium(II)-NHC complexes comprised of 1,4-naphthalenyl or 9,10-anthracenyl spacer sandwiched between two imidazole rings was successfully synthesized. These complexes were characterized by 1H and 13C{1H} NMR spectroscopy and elemental analysis. The structures of two dimetallic palladium complexes and a related mononuclear palladium complex to be used for comparative studies were further characterized by X-ray diffraction. The dimetallic palladium complex with the 9,10-anthracenyl linker was very efficient in catalyzing direct C?H arylation reactions of heteroaromatic compounds (imidazoles, imidazo[1,2-a]pyridine, and thioazole) with a broad range of aryl chlorides, employing a mild monopalladium loading of 1.5 mol%.It allows for the effective use of aryl chlorides to prepare arylated heterocycles, previously only accessible with the more reactive bromide counterparts. Importantly, the catalytic activity of the dimetallic precatalyst was found to be higher than that of an analogous mononuclear complex. (Figure presented.).
Palladium(II) Complexes of N-Heterocyclic Carbene Amidates Derived from Chalcogenated Acetamide-Functionalized 1 H-Benzimidazolium Salts: Recyclable Catalyst for Regioselective Arylation of Imidazoles under Aerobic Conditions
Bhaskar, Renu,Sharma, Alpesh K.,Singh, Ajai K.
, p. 2669 - 2681 (2018/09/10)
The chalcogenated acetamide-functionalized 1H-benzimidazolium salt precursors [1-(CH2C(O)NH(CH2)2S/SePh)-3-R-C7H5N2]+ X (L1-L4; R = Me, CH2Ph; X = Br, I) to C,N,S/Se l