A new application of polymer supported, homogeneous and reusable catalyst PEG–SO3H in the synthesis of coumarin and uracil fused pyrrole derivatives

Sanjay Paul; Asish R. Das

doi:10.1039/C2CY20117H

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A new application of polymer supported, homogeneous and reusable catalyst PEG–SO₃H in the synthesis of coumarin and uracil fused pyrrole derivatives†

Sanjay Paul^a and Asish R. Das*^a

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^a Department of Chemistry, University of Calcutta, Kolkata 700009, India
E-mail: ardchem@caluniv.ac.in, ardas66@rediffmail.com
Fax: +91 3323519754
Tel: +91 3323501014, +91 9433120265

Abstract

A highly efficient, simple and convenient synthetic protocol for the synthesis of coumarin and uracil fused pyrrole derivatives has been demonstrated. A biodegradable, polymer supported catalyst, PEG–SO₃H, was applied for the two component coupling of 4-aminocoumarin or 6-aminouracil and α,β-unsaturated nitroalkene. The catalyst has efficiently catalyzed the Michael addition and intramolecular cyclisation with the concomitant removal of the nitro group. The catalyst was recycled for five cycles with almost unaltered catalytic activity.

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Article information

DOI: https://doi.org/10.1039/C2CY20117H
Article type: Communication
Submitted: 27 Feb 2012
Accepted: 17 Apr 2012
First published: 19 Apr 2012

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Catal. Sci. Technol., 2012,2, 1130-1135

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A new application of polymer supported, homogeneous and reusable catalyst PEG–SO₃H in the synthesis of coumarin and uracil fused pyrrole derivatives

S. Paul and A. R. Das, Catal. Sci. Technol., 2012, 2, 1130 DOI: 10.1039/C2CY20117H

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