Silica gel supported sodium hydrogensulfate as a heterogenous catalyst for high yield synthesis of 2-arylbenzothiazoles

Department of Chemistry. J. N. T. University. Kukatpally. Hyderabad-500 072, India E-mail : drmacj@yahoo.ro.uk Fax: 91-40-23060056 Manuscript received 10 March 2005, revised 26 August 2005, accepted 21 November 2005 Silica gel supported sodium bisulfate catalyzes efficiently the synthesis of 2-arylbenzothiazoles by the condensation of 2-aminothiophenol and aromatic aldehyde in refluxing acetonitrile to afford the corresponding 2-arylbenzothiazoles