cu(ii) complex immobilized on pva as an efficient catalyst for preparation of benzimidazole derivatives

an efficient and rapid one-pot method for the green synthesis of benzimidazole derivatives and catalysed by pva@cu(ii) schiff base complex is described. the catalyst demonstrates excellent performance, reusability and stability which can efficiently catalyst benzimidaoles in water medium. a number of benzimidazoles were prepared in up to high yields. the catalyst was recovered by simple filtration and reused for seven runs without any remarkable reactivity loss.