85573-09-7

Upstream product

• 123-08-0 4-hydroxy-benzaldehyde 
• 95-54-5 1,2-diamino-benzene 

Downstream Products

• 6504-13-8 4-(1H-benzimidazol-2-yl)phenol 

Relevant academic research and scientific papers

Synthesis and evaluation of 2-aryl-1H-benzo[d]imidazole derivatives as potential microtubule targeting agents

Microtubule targeting agents (MTAs) are the potential drug candidates for anticancer drug discovery. Disrupting the microtubule formation or inhibiting the de-polymerization process by a synthetic molecule can lead to an excellent anticancer drug candidat

Cyclization of aromatic aldehydes and phenylenediamines under reduced pressure: A convenient, environmentally friendly, and simple procedure for benzimidazole precursors

The condensation of phenylenediamines with aromatic aldehydes in the presence of catalysts to obtain benzimidazoles under harsh condition is achieved by various reported conditions. The present work demonstrates a convenient, environmentally friendly, and simple procedure to obtain benzimidazoles through the cyclization between phenylenediamines and aromatic aldehydes under reduced pressure. By simply adding aromatic aldehydes to diaminobenzene derivatives and allowing the stoichiometric reaction at room temperature under reduced pressure at 66.6 Pa, the dehydrogenation leads to benzimidazoles with the yield as high as 80–90%. In addition, the purging of H2 gas to benzimidazoles results in the hydrogenation of imidazole to obtain the intermediate benzimidazolidine form. This confirms how the cyclization relies on the reduced pressure. This synthesis pathway not only gives the aromatic aldehydes with high yield under the mild condition but also the selection of benzaldehydes with reactive functional groups leads to the precursors for other chemical modifications and polymerizations.

Ni nanoparticles: Mild and efficient catalyst for the chemoselective synthesis of 2-arylbenzimidazoles, 2-arylbenzothiazoles, and azomethines

(Chemical Equation Presented) A new and efficient method has been developed for the synthesis of biologically significant 2-arylbenzimidazoles, 2-arylbenzothiazoles, and azomethines using recyclable and inexpensive polyvinyl pyrrolidone (PVP)-stabilized Ni nanoparticles in ethylene glycol at room temperature in excellent yields. Copyright Taylor & Francis Group, LLC.

Synthesis, characterization and use of Schiff bases as fluorimetric analytical reagents (part II)

Many Schiff bases were prepared by condensation reaction of certain aromatic amines with aromatic aldehydes derivatives and then the fluorescence properties of these Schiff bases were examined in acidic and basic media. It is shown that these compounds can be used for fluorimetric monitoring of small pH changes.

Synthesis and antibacterial activities of some schiff bases

Schiff bases p-hydroxybenzylidene-2-carboxyaniline, p-nitrobenzylidene-2- carboxyaniline, p-(N, N-dimethyl)aminobenzylidene-2-carboxyaniline, N-(4-hydroxybezylidene)-benzene-1,2-diamine, N-(4-nitrobezylidene)benzene-1,2- diamine,N-(4-(N, N-dimethylaminobezylidene)benzene-1,2-diamine, N-(4-(N,Ndimethylamino) benzylidene)naphthalen-1-amine,N-(4-nitrobenzylidene) naphthalen-1-amine,N-(4-chlorobenzylidene)naphthalen-1-amine,sodium-4-(4-(N, N-dimethyl amino)benzylideneamino)naphthalene-1-sulfonate,sodium -4-(4-nitrobenzylideneamino) naphthalene-1-sulfonate and sodium-4-(4- chlorobenzylideneamino) naphthalene-1-sulfonate obtained by condensation of aniline and naphthylamine derivatives with some aromatic aldehydes were characterized by physical and spectral methods. The biological activity of these products were as antibacterial agents against three species of human pathogenic bacteria such as Escherichia coli, Staphylococcus aureus and Klebsiella sp. Nearly 50% of these compounds showed reasonable activity against the bacterial species investigated and we found that the antibacterial activity is dependent on the molecular structure of the compounds.

Synthesis of 4-substituted styrene compounds via palladium-catalyzed suzuki coupling reaction using free phosphine ligand in air

The air-stable and easy to prepare nonsymmetric Schiff base ligands have been synthesized and proven to be efficient ligands for Suzuki cross-coupling reaction between aryl bromides and arylboronic acids using PdCl 2(CH3CN)2 as palladium source under aerobic conditions. The coupling reaction proceeded smoothly using N-[(3,4- dimethoxyphenyl)methylene]-1,2-benzenediamine (L3) as ligand under mild conditions to provide 4-substituted styrene compounds in good yields.

Dehydrogenations using benzofuroxan as oxidant

2-Arylsubstituted benzimidazoles, quinoxalines, in 3,5-position substituted 2,6-dimethylpyridines, and 1,4-bis(alkylamino)-9,10-anthracenediones are easily prepared under mild conditions by means of benzofuroxan as oxidant. Thus, the preparation of 2-arylbenzimidazoles succeeds in acetonitrile at 50°C in yields of 65 to 78%.

Carbonyl and thiocarbonyl compounds XX. Reaction of hydroxybenzaldehydes with o-phenylenediamine; newer aspects in benzimidazole synthesis

The nature of the products of the uncatalysed reaction of the o-hydroxybenzaldehydes 1a-d with o-phenylenediamine in boiling ethanol is mainly dependent on the molar ratio of the reactants and the nature of the substituents at the phenyl ring of the aldeh