Research Article
Ashok D. Sagar, Sadhana N. Cha
Abstract
Lignin Sulphonic Acid was found to be an efficient polymer supported catalyst for the synthesis of 1, 2-disubstituted benzimidazoles from the reaction of o-phenylene diamine with several aryl aldehydes. The excellent chemo selectivity of the reaction in presence of methanol at room temperature within 30-40 min was found.