Polyaniline-supported acid as an efficient and reusable catalyst for a one-pot synthesis of β-acetamido ketones via a four-component condensation reaction |
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Authors: | Mohammad Reza Nabid Seyed Jamal Tabatabaei Rezaei |
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Affiliation: | aDepartment of Chemistry, Shahid Beheshti University, P.O. Box 19396-4716, Tehran, Iran |
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Abstract: | Polyaniline-supported acid salts such as polyaniline-hydrochloride, polyaniline-sulfate and polyaniline-nitrate were prepared by oxidation of aniline using ammonium persulfate as oxidizing agents. Polyaniline salts were used as catalyst for the preparation of β-acetamido ketones. Polyaniline-sulfate salt was found to be the best catalyst for the preparation of β-acetamido ketones. Present methodology offers several advantages, such as cheaper process, easy synthesis of stable catalyst, simple work-up procedure, and excellent activity with less amount of catalyst and in addition, the catalyst can be easily recovered after completion of the reaction and reusable without affecting its activity. |
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Keywords: | Polyaniline salts Reusable catalyst β -Acetamido ketones Multi-component reactions |
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