In recent year dicationic ILs would be interesting research targets due to their high thermal stability, broad liquid range, and biological activities such as antiviral, antifungal and anticancer activities. In particular, imidazolium based dicationic ILs showing high thermal stability were used as effective reaction media for high temperature organic reactions [1-4]. Herein, a novel dicationic ionic liquid based on imidazoliumcation is designed, synthesized andsuccessfully used as new and efficient method for the synthesis of benzimidazoles, benzoxazoles and benzothiazoles in the presence of catalytic amount of this novel ionic liquid under solvent-free conditions. In designing this novel ionic liquid we used 1,2-bis(2-chloroethoxy)ethane as a linker between imidazolium rings that participates in dissolving of organic compound in ionic liquid. References [1]- Sheldon, R. Chem. Commun.2001, 2399. [2]- Anderson, J. L.; Ding, R.;Ellern, A.; Armstrong, D. W. J. Am. Chem. Soc.2005, 127, 593. [3]- Chowdhury, S.; Mohan, R. S.; Scott, J. L.;Tetrahedron.2007, 63, 2363. [4]- Hallett, J. P.; Walton, T.;Chem. Rev.2011, 111, 3508.

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