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An Efficient and Green Synthesis of 2-Arylbenzothiazoles in an Ionic Liquid, [pmIm]Br under Microwave Irradiation

Brindaban C. Ranu, Ranjan Jana, Suvendu S. Dey

*Department of Organic Chemistry, Indian Association for the Cultivation of Science, Email:

B. C. Ranu, R. Jana, S. S. Dey, Chem. Lett., 2004, 286-287.

DOI: 10.1246/cl.2004.274

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A simple microwave-accelerated condensation of 2-aminothiophenol and aromatic aldehydes in an inexpensive ionic liquid, 1-pentyl-3-methylimidazolium bromide ([pmIm]Br) provides 2-arylbenzothiazoles under solvent and catalyst-free condition. The ionic liquid can be recycled for subsequent reactions.

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Key Words

ionic liquids, microwave synthesis, benzothiazoles

ID: JXX-Y2004