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Paper | Regular issue | Vol 85, No. 4, 2012, pp.851-860
Published online, 6th March, 2012
DOI: 10.3987/COM-12-12423
■ Recoverable and Reusable Catalyst for the Reaction of N-Tosyl Imines with Pyrrole: Synthesis of meso-Tetraarylporphyrins

Baris Temelli* and Saadet Seyma Ozdemir

*Department of Chemistry, Hacettepe University, 06800 Beytepe, Ankara, Turkey

Abstract

The direct and efficient synthesis of meso-substituted porphyrins from the reaction of N-tosyl imines with pyrrole in the presence of environmentally friendly catalysts, Cu(OTf)2 and Montmorillonite K-10 clay, is described. The advantages of the new method include mild reaction conditions and using environmentally friendly catalysts which can be recovered and reused after the reactions without any significant loss of catalytic activity.