Fe³⁺‐Montmorillonite as Effective, Recyclable Catalyst for Paal–Knorr Pyrrole Synthesis Under Mild Conditions

Guoyong Song State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China

Bo Wang State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China

Guang Wang Key Laboratory of Gas Geochemistry, Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou, China

Yuru Kang State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China

Tao Yang State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China

Liming Yang State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, ChinaCorrespondence[email protected]

Abstract

Fe³⁺‐montmorillonite clay catalyst was used for the first time for pyrroles preparation by Paal–Knorr condensation. The features of this catalytic system are improved yields, mild conditions, a simple procedure, and high catalytic efficiency. The catalyst could be easily recycled and reused for three times without visible losing of activity.

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Fe³⁺‐Montmorillonite as Effective, Recyclable Catalyst for Paal–Knorr Pyrrole Synthesis Under Mild Conditions

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Fe3+‐Montmorillonite as Effective, Recyclable Catalyst for Paal–Knorr Pyrrole Synthesis Under Mild Conditions

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Fe³⁺‐Montmorillonite as Effective, Recyclable Catalyst for Paal–Knorr Pyrrole Synthesis Under Mild Conditions