1,3-Di-n-butylimidazolium tribromide-mediated chemoselective oxidative cyclization of benzothiazoyl carbaimides: A novel approach toward the synthesis of N-bis-benzothiazole derivatives
作者:Ravindra M. Kumbhare、Tulshiram Dadmal、Umesh Kosurkar、K. Vijay Kumar
DOI:10.1002/jhet.736
日期:2012.3
4‐(N,N‐Dimethylamino)pyridine is found to be an efficient catalyst for the synthesis of benzothiazoyl carbaimide derivatives using 2‐aminobenzothiazoles and phenylisothiocyanates, which on treatment with ionic liquid [bbim][Br3] at 70°C afforded exclusive formation of N‐bis‐benzothiazole derivatives in good yield. J. Heterocyclic Chem., (2012).