13 research outputs found
1-Cyclohexylmethyl-3-methyl-2-[(phenylimino)(sulfido)methyl]benzimidazolium
In the zwitterionic title compound, C22H25N3S, the benzimidazole ring system makes a dihedral angle of 55.69 (11)° with the phenyl ring. In the crystal structure, inter- and intramolecular C—H⋯S interactions occur
1-(Prop-2-en-1-yl)-3-[(trimethylsilyl)methyl]benzimidazolium bromide monohydrate
In the title compound, C14H21N2Si+·Br−·H2O, the benzimidazole ring system is almost planar [maximum deviation = 0.021 (2) Å]. In the crystal, O—H⋯Br and C—H⋯O hydrogen bonds link the ions via the O atoms of the water molecules. In addition, there are π–π stacking interactions between the centroids of the benzene and imidazole rings of the benzimidazole ring system [centroid–centroid distances = 3.521 (3) and 3.575 (2) Å]
1,3-Difurfurylbenzimidazolium chloride monohydrate
The title compound, C17H15N2O2
+·Cl−·H2O, was synthesized from benzimidazole and furfryl chloride in dimethylformamide. The cationic benzimidazolium ring is connected to two furan rings via methylene bridges. The furan rings make dihedral angle of 79.09 (18)° with respect to each other, and make dihedral angles of 73.92 (12) and 72.58 (13)° with respect to the benzimidazole ring. O—H⋯Cl, C—H⋯O and C—H⋯Cl hydrogen bonds and C—H⋯π interactions contribute to the stabilization of the crystal structure. Furthermore, there is a π–π interaction between adjacent five- and six-membered rings of the benzimidazole groups [centroid–centroid distance = 3.5305 (8) Å]
(E)-1,1′-Bis[(E)-but-2-enyl]-3,3′-(propane-1,3-diyl)bis(1H-benzimidazol-3-ium) dibromide monohydrate
The title compound, C25H30N4
2+·2Br−·H2O, was synthesized from 1,1′-propylenedibenzimidazole and (E)-1-bromobut-2-ene in dimethylformamide solution. The two benzimidazole ring systems are essentially planar, with maximum deviations of 0.011 (4) and 0.023 (3) Å. The dihedral angle between these two ring systems is 25.87 (15)°. The crystal structure is stabilized by intermolecular O—H⋯Br and C—H⋯Br hydrogen-bonding interactions. Atmospheric water was incorporated into the crystal structure
Dichloridobis[5-nitro-1-trimethylsilylmethyl-1H-benzimidazole-κN 3]cobalt(II) N,N-dimethylformamide solvate
The title compound, [CoCl2(C11H15N3O2Si)2]·C3H7NO, was synthesized from 5-nitro-1-trimethylsilylmethyl-1H-benzimidazole and cobalt(II) chloride in dimethylformamide. The CoII atom is coordinated in a distorted tetrahedral environment by two Cl atoms and two N atoms. In the crystal structure, there are a number of C—H⋯Cl and C—H⋯O hydrogen-bonding interactions between symmetry-related molecules
1-Benzyl-3-[(trimethylsilyl)methyl]benzimidazolium chloride monohydrate
The title compound, C18H23N2Si+·Cl−·H2O, was synthesized from 1-[(trimethylsilyl)methyl]benzimidazole and benzyl chloride in dimethylformamide. The benzimidazole ring system is approximately planar, with a maximum deviation of 0.022 (2) Å, and makes an angle of 74.80 (12)° with the phenyl ring. The crystal packing is stabilized by O—H⋯Cl, C—H⋯Cl, C—H⋯O and C—H⋯π interactions between symmetry-related molecules together with π–π stacking interactions between the imidazolium and benzene rings [centroid–centroid distance = 3.5690 (15) Å] and between the benzene rings [centroid–centroid distance = 3.7223 (14) Å]
Synthesis, Characterization and Microwave-Promoted Catalytic Activity of Novel N-phenylbenzimidazolium Salts in Heck-Mizoroki and Suzuki-Miyaura Cross-Coupling Reactions under Mild Conditions
molecule
Microwave Assisted Suzuki-Miyaura and Ullmann Type Homocoupling Reactions of 2- and 3-Halopyridines Using a Pd(OAc)2/Benzimidazolium Salt and Base Catalyst System
A number of novel benzimidazole derivatives 1–4 were synthesized and the catalytic activity of these compounds in a catalytic system consisting of a benzimidazolium salt/Pd(OAc)2/K2CO3 were investigated in the Suzuki-Miyaura and Ullmann type homocoupling reactions under microwave irradiation. We obtained both cross coupling and homocoupling products of pyridine and some side products such as dimethylaminopyridine and unsubstituted pyridine
Microwave Assisted Suzuki-Miyaura and Ullmann Type Homocoupling Reactions of 2- and 3-Halopyridines Using a Pd(OAc)2/Benzimidazolium Salt and Base Catalyst System
A number of novel benzimidazole derivatives 1–4 were synthesized and the catalytic activity of these compounds in a catalytic system consisting of a benzimidazolium salt/Pd(OAc)2/K2CO3 were investigated in the Suzuki-Miyaura and Ullmann type homocoupling reactions under microwave irradiation. We obtained both cross coupling and homocoupling products of pyridine and some side products such as dimethylaminopyridine and unsubstituted pyridine