1,3-Di-n-butylimidazolium tribromide-mediated chemoselective oxidative cyclization of benzothiazoyl carbaimides: A novel approach toward the synthesis of N-bis-benzothiazole derivatives

[摘要]：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 degrees C afforded exclusive formation of N-bis-benzothiazole derivatives in good yield. J. Heterocyclic Chem., (2012).

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