title: NMR investigation of hydrogen bonding and 1,3-tautomerism in 2-(2-hydroxy-5-substituted-aryl) benzimidazoles.
abstract: The 1,3-tautomerism associated with 2-(2-hydroxy-5-substituted-aryl)benzimidazoles was studied in different solvents. The effect of hydrogen bonding involving the hydroxyl group of the 2-aryl ring on the tautomerism was investigated using NMR spectroscopy. The influence of the solvent concentration on 2-(2-hydroxy-5-chloroaryl)benzimidazole was studied in acetone-d6 and DMSO-d6.
authors.affiliation: Department of Organic Chemistry, Madurai Kamaraj University, Madurai 625 021, India.
authors.forename: V
authors.initials: V
authors.lastname: Sridharan
authors.forename: S
authors.initials: S
authors.lastname: Saravanan
authors.forename: S
authors.initials: S
authors.lastname: Muthusubramanian
authors.forename: S
authors.initials: S
authors.lastname: Sivasubramanian
mesh_terms: D001562:Benzimidazoles / Q000032:analysis* / Q000737:chemistry*; D006860:Hydrogen Bonding; D007536:Isomerism; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D012997:Solvents / Q000737:chemistry*
chemical_list: D001562:Benzimidazoles; D012997:Solvents