Abstract
An Fe(III) catalyzed, efficient methodology for the synthesis of 2-aminobenzothiazole derivatives in water was established. This mild, base-free, one-pot strategy showcases the reaction of readily available 2-bromophenyl isothiocyanate with a broad range of substituted amines such as aliphatic, aromatic, primary, secondary and cyclic amines under air. Notably, the reaction afforded the corresponding products with moderate to excellent yields in green conditions. The present optimization was found to be highly desirable for aliphatic amine substrates. Moreover, the catalyst could be successfully recovered and recycled for a minimum of 5 times without much loss in efficiency.
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