Mild and highly efficient method for the synthesis of 2-arylbenzimidazoles and 2-arylbenzothiazoles
(Chemical Equation Presented) A new, convenient method for the syntheses of 2-substituted benzimidazole and benzothizole is described. Short reaction times, large-scale synthesis, easy and quick isolation of the products, excellent chemoselectivity, and excellent yields are the main advantages of this procedure.
Bahrami, Kiumars,Mehdi Khodaei,Naali, Fardin
p. 6835 - 6837
(2008/12/22)
A simple and efficient one-pot synthesis of 2-substituted benzimidazoles
A simple and efficient procedure for the synthesis of substituted benzimidazoles through a one-pot condensation of o-phenylenediamines with aryl aldehydes in the presence of H2O2/HCl system in acetonitrile at room temperature is described. Short reaction time, large-scale synthesis, easy and quick isolation of the products, and excellent yields are the main advantages of this procedure. Georg Thieme Verlag Stuttgart.
Bahrami, Kiumars,Khodaei, Mohammad Mehdi,Kavianinia, Iman
p. 547 - 550
(2008/01/03)
H2O2/HCI as a new and efficient system for synthesis of 2-substituted benzimidazoles
The system, H2O2/HCI, oxidises carbon-nitrogen bonds for the synthesis of benzimidazoles from aldehydes and diamines in water at 100°C. Both aryl aldehydes bearing electron-donating and electron-withdrawing substituents afforded desired benzimidazoles in excellent yields. This procedure is also applicable to substituted o-phenylenediamines, which produced 2-phenylbenzimidazoles smoothly in excellent yields. The simplicity of the system, the use of water as the solvent, large-scale synthesis and easy work-up are main advantages of this procedure.
Bahrami, Kiumars,Khodaei, Mohammad M.,Kavianinia, Iman
p. 783 - 784
(2007/10/03)
Synthesis of 2,5(6)-Disubstituted-benzimidazoles, 2-Substituted-5-(4-substituted-phenyl)-1,3,4-thiadiazoles and Imidazothioxanthene and Their Antifilarial Activity
2-Carbomethoxyaminothioxanthenoimidazol-12-one-13,13-dioxide (5), 2,5(6)-disubstituted-benzimidazoles (10-13) and 2-substituted-5-(3-nitro-4-substituted-phenyl)-1,3,4-thiadiazoles (18-24) have been synthesized and evaluated for their antifilarial a
Chauhan, P. M. S.,Bhakuni, D. S.
p. 1146 - 1149
(2007/10/02)
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