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Abstract
Condensation of o-phenylenediamine sulfate with cinnamic acids in refluxing ethylene glycol yielded the corresponding 2-styrylbenzimidazoles in excellent yields.
ACKNOWLEDGMENT
The authors are grateful to UGC, New Delhi, India and NSERC, Ottawa, Canada for financial support. They are also thankful to Dr. K. Syamasunder, Professor and Head, Department of Chemistry, J. N. T. University, Hyderabad for providing laboratory facilities and constant encouragement.