7035-68-9Relevant articles and documents
Preparation and characterization of two bronsted acid ionic liquids
Chen, Shuanhu,Wang, Mingtian,Wang, Fei,Yang, Fenrong,Shi, Suqing,Wang, Nani
, p. 1027 - 1031 (2011)
Two Bronsted acid task specific ionic liquids based on the benizimidazolium cation (1-ethylbenzimidazolium tetrafluoroborate {[H-eBim]BF4 (1)} and 1-propylbenzimidazolium tetrafluoroborate {[H-pBim]BF4 (2)}) were synthesized and characterized. The crystal of 1 is in orthorhombic system with space group Pnma, and the unit cell parameters as follows: a = 9.9308(16), b = 6.8813(11), c = 15.345(3) A, V = 1048.6(3) A3, Z = 4, Dc = 1.482 g/cm3. Structure 2 crystallizes in the monoclinic space group P21/c, with unit cell a = 4.9688(14), b = 13.684(4), c = 17.295(5) A, β = 92.090(6)°, V = 1175.2(6) A3, Z = 4, Dc = 1.402 g/cm3. These molecules are stabilized in solid state by various intra and intermolecular hydrogen bonding interactions to give polymeric structures.
N-Heterocyclic carbene copper(i), mercury(ii) and silver(i) complexes containing durene linker: Synthesis and structural studies
Liu, Qing-Xiang,Chen, Ai-Hui,Zhao, Xiao-Jun,Zang, Yan,Wu, Xiu-Mei,Wang, Xiu-Guang,Guo, Jian-Hua
, p. 293 - 305 (2011)
The dibenzimidazolium salts bis[N-(alkyl)benzimidazoliumylmethyl] durene·2X (1a: alkyl = C2H5, X = Br; 1b: alkyl = C2H5, X = PF6; 1c: alkyl = n-C 3H7, X = Cl; 1d: alkyl = n-Csub
Using Methanol as a Formaldehyde Surrogate for Sustainable Synthesis of N-Heterocycles via Manganese-Catalyzed Dehydrogenative Cyclization
Li, Yibiao,Liu, Qiang,Shao, Zhihui,Yuan, Shanshan
supporting information, (2022/02/23)
The development of an efficient and sustainable synthetic route for formaldehyde production from renewable feedstock, especially in combination with a subsequent transformation to straightforwardly construct valuable chemicals, is highly desirable. Herein, we report a novel manganese-catalyzed dehydrogenative cyclization of methanol as a formaldehyde surrogate with a variety of dinucleophiles for facile synthesis of N-heterocycles. The in situ generated formaldehyde via catalytic methanol dehydrogenation can be selectively trapped by diverse dinucleophiles to avoid several possible side reactions. The utility of this transformation is further highlighted by its successful application to the synthesis of 13C-labeled N-heterocycles using 13CH3OH as a readily accessible 13C-isotope reagent.
Highly efficient one pot synthesis of benzimidazoles from 2-nitroaniline and PhSiH3 as reducing agent catalyzed by Pd/C as a heterogeneous catalyst
Phatake, Vishal V.,Bhanage, Bhalchandra M.
, (2021/03/15)
This work reports an efficient route for the synthesis of benzimidazole from o-nitroaniline in the presence of carbon dioxide atmosphere, PhSiH3 as a reducing agent catalyzed by Pd/C as a catalyst. Benzimidazoles have become the focus of organic chemists, as benzimidazole is an important intermediate in medicinal chemistry. We have developed more efficient route for the synthesis benzimidazole and various substituted benzimidazoles have been synthesized in good to excellent yield. The TBD (1,5,7-Triazabicyclo [4.4.0] dec-5-ene) is selected as a base as it promotes the CO2 insertion. Benzimidazoles were synthesized through reduction of nitro group followed by cyclization of amine using CO2 as a carbon source. Moreover, the Pd/C catalyst can be recycled up to five recycle run without significant changes in the yield of the product.
Iodine(I) and Silver(I) Complexes of Benzoimidazole and Pyridylcarbazole Derivatives
Rissanen, Kari,Siepmann, Marcel,Taipale, Essi,Truong, Khai-Nghi
supporting information, p. 17412 - 17419 (2021/10/19)
The synthesis of iodine(I) complexes with either benzoimidazole or carbazole-derived sp2 N-containing Lewis bases is described, as well as their corresponding silver(I) complexes. The addition of elemental iodine to the linear two-coordinate Ag
