10066-20-3Relevant articles and documents
Effect of substituents on spin density in benzimidazole nitronyl nitroxide radicals studied by electron spin resonance
Esat, Burak,Fidan, Ismail,Bahceci, Sumeyye,Yerli, Yusuf,Sari, Levent
scheme or table, p. 641 - 650 (2010/06/21)
Several novel benzimidazole-3-oxide-1-oxyl radicals with substituents at 5 and/or 6 position were synthesized. The ESR analysis of nitrogen hyperfine coupling constants (hfccs) revealed that substituents at 5 and 6-position affect the spin density to greater extent than substituents on the phenyl ring at 2-position. Density functional theory calculations of nitrogen hfccs were performed using several different Pople type basis sets, as well as double and triple zeta quality individual gauge for localized orbital (IGLO-II, IGLO-III) and electron paramagnetic resonance (EPR-II, EPR-II) basis sets. Experimental and theoretical hfccs are compared.
Studies on the Reaction of o-Benzoquinone Dioxime with Aldehydes: An Improved Procedure for 1-Hydroxybenzimidazole 3 -Oxides
Paetzold, F.,Niclas, H.-J.,Gruendemann, E.
, p. 345 - 350 (2007/10/02)
An improved method for the preparation of the title compounds 4 is described.Thus, 1-hydroxybenzimidazole 3-oxides are obtained in high yields by the reaction of o-benzoquinone dioxime 1 with aromatic and heteroaromatic substituted aldehydes 2 in the pres
A NOVEL RING TRANSFORMATION OF BENZOFUROXANES TO 1-HYDROXY-2-ARYL-BENZIMIDAZOLE-3-N-OXIDE WITH NITRONES
Borah, Harsha Narayan,Boruah, Romesh Chandra,Sandhu, Jagir Singh
, p. 1625 - 1628 (2007/10/02)
Benzofuroxanes (1) react with nitrones (2) to give 1-hydroxy-2-aryl-benzimidazole-3-N-oxide (3) in good yields.
