4981-92-4Relevant articles and documents
Mercury (II), copper (II) and silver (I) complexes with ether or diether functionalized bis-NHC ligands: Synthesis and structural studies
Liu, Qing-Xiang,Yu, Jie,Zhao, Xiao-Jun,Liu, Shu-Weng,Yang, Xiao-Qiong,Li, Kang-Ying,Wang, Xiu-Guang
, p. 4086 - 4096 (2011)
The oligoether-linked dibenzimidazolium (or diimidazolium) salts, bis[2-(3-ethylbenzimidazolium-1-yl)ethyl]ether diiodide (1), bis[2-(3- nbutylbenzimidazolium-1-yl)ethyl]ether diiodide (2), 1,1′-[1,2-ethanediyl-bis(oxy-1,2-ethanediyl)]-bis(3-benzylbenzimidazolium- 1-yl) diiodide (3), 1,1′-[1,2-ethanediyl-bis(oxy-1,2-ethanediyl)]-bis(3- ethylbenzimidazolium-1-yl) di-hexafluorophosphate (4), 1,1′-[1,2- ethanediyl-bis(oxy-1,2-ethanediyl)]-bis(3-benzylimidazolium-1-yl) diiodide (5), and their five mercury(ii), copper(ii) and silver(i) complexes with ether or diether linkers mercury-{C,C′-bis[2-(3-ethylimidazolin-2-yliden-1-yl) ethyl]ether} tetraiodomercurate (7), copper-{C,C′-bis[2-(3- nbutylimidazolin-2-yliden-1-yl)ethyl]ether} tetraiodomercurate (8), mercury-{C,C′-1,1′-[1,2-ethanediylbis(oxy-1,2-ethanediyl)] -bis(3-benzylbenzimidazolin-2-yliden-1-yl)} triiodomercurate acetate (9), silver-{C,C′-1,1′-[1,2-ethanediylbis(oxy-1,2-ethanediyl)] -bis(3-ethylbenzimidazolin-2-yliden-1-yl)} hexafluorophosphate (10) and mercury-{C,C′-1,1′-[1,2-ethanediylbis(oxy-1,2-ethanediyl)] -bis(3-benzylimidazolin-2-yliden-1-yl)} tetraiodomercurate (11), as well as one anionic complex bis[2-(3-nbutylbenzimidazolium-1-yl)ethyl]ether di-μ-iodo-bis(diiodomercurate) (6) were prepared and characterized. Each of N-heterocyclic carbene metal complexes 7-11 possesses a macrometallocycle, respectively, formed by one metal atom and one bidentate chelate carbene ligand. In the crystal packing of complexes 6-11, 2D supramolecular layers are formed via intermolecular weak interactions, including π-π interactions, hydrogen bonds, C-H...π contacts and weak Hg...I bonds.
Benzoxazole and dioxolane substituted benzimidazole–based N–heterocyclic carbene–silver(I) complexes: Synthesis, structural characterization and in vitro antimicrobial activity
Shahini,Achar, Gautam,Budagumpi, Srinivasa,Müller-Bunz, Helge,Tacke, Matthias,Patil, Siddappa A.
, p. 1 - 13 (2018)
A novel series of 1,3–benzoxazole and 1,3–dioxolane substituted benzimidazole–based N–heterocyclic carbene (NHC) precursors (6a–b and 11a–b) and their corresponding NHC–silver(I) acetate (12a–b and 14a–b) and bis–NHC–silver(I) hexafluorophosphate complexe
Synthesis, Structure, and Anticancer Activity of Symmetrical and Non-symmetrical Silver(I)-N-Heterocyclic Carbene Complexes
Atif, Muhammad,Bhatti, Haq Nawaz,Haque, Rosenani A.,Iqbal, Muhammad Adnan,Ahamed Khadeer, Mohammad B.,Majid, Amin Malik Shah Abdul
, p. 1171 - 1189 (2020)
Synthesis and anticancer studies of three symmetrically and non-symmetrically substituted silver(I)-N-Heterocyclic carbene complexes of type [(NHC)2-Ag]PF6 (7–9) and their respective (ligands) benzimidazolium salts (4–6) are describe
Methanol as the C1source: Redox coupling of nitrobenzenes and alcohols for the synthesis of benzimidazoles
An, Jie,Lai, Zemin,Li, Hengzhao,Peng, Mengqi,Sun, Yanhao,Yan, Zihan,Yang, Ruoyan,Zhang, Yuntong
supporting information, p. 748 - 753 (2022/02/02)
We present an operationally simple redox coupling for the synthesis of N-1 substituted benzimidazoles using feedstock building block 2-nitroaniline derivatives as the precursors and methanol as the C1 source. Higher atom, step, and redox economies and exc
Benzimidazole- And Imidazole-Fused Selenazolium and Selenazinium Selenocyanates: Ionic Organoselenium Compounds with Efficient Peroxide Scavenging Activities
Banerjee, Kaustav,Bhattacherjee, Debojit,Mahato, Sulendar K.,Sufian, Abu,Bhabak, Krishna Pada
, p. 12984 - 12999 (2021/08/30)
Three new classes of ionic organoselenium compounds containing cationic benzimidazolium and imidazolium ring systems with selenocyanates as counterions are described. The cyclization of N,N′-disubstituted benzimidazolium and imidazolium bromides having N-(CH2)2-Br and N-(CH2)3-Br groups in the presence of potassium selenocyanate (KSeCN) led to formation of the corresponding selenazolium selenocyanates (21a, 21b, 22a, and 22b) and selenazinium selenocyanates (21c, 21d, 22c, and 22d). However, the open-chain selenocyanates with additional selenocyanate counterions (21e, 21f, 22e, and 22f) were formed from the N,N′-disubstituted benzimidazolium and imidazolium bromides having N-(CH2)6-Br groups. Mechanistic studies were carried out to understand the feasibility of such cyclization processes in the presence of KSeCN. The compounds were studied further for their potencies to catalytically reduce H2O2 in the presence of thiols. Interestingly, the cyclic selenazolium (21a, 21b, 22a, and 22b) and selenazinium compounds (21c, 21d, 22c, and 22d) exhibited significantly higher antioxidant activities than the corresponding acyclic selenocyanates (21f, 22e, and 22f). Selected compounds (22d and 22e) were further evaluated for their potencies in modulating the intracellular level of reactive oxygen species (ROS) in a representative macrophage cell line (RAW 264.7). Owing to the cationic nature of compounds, they may target and scavenge mitochondrial ROS in the cellular medium.
