Abstract
A series of styryl dyes: 2‐substituted styryl benzimidazole and α‐methyl‐2‐substituted styryl benzimidazole were synthesized under solvent‐free microwave irradiation by the condensation of 2‐methylbenzimidazole or 2‐ethylbenzimidazole with aromatic aldehydes in the presence of Ac2O.
Acknowledgments
We appreciate the financial support for this research by a grant from the Special Science Research Foundation of Education Committee of Shaanxi Province (No. 02JK060).