A Mild and Efficient Method for Synthesis of Benzimidazoles using Thallium Nitrate or Lanthanum Nitrate Catalysts
Keywords:
Aromatic aldehyde, benzimidazole, Lanthanum nitrate, Thallium nitrateAbstract
A simple and efficient route for synthesizing benzimidazoles from o-Phenylenediamine and aromatic aldehydes using rare earth metal catalyst like Thallium nitrate or Lanthanum nitrate has been proposed. The easy work-up, higher yields and shorter reaction times at room temperature are the advantages over other methods.
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