Microwave assisted synthesis of novel annealed porphyrins |
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Authors: | Ibrahim Elghamry Lutz F Tietze |
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Institution: | Institute of Organic and Biomolecular Chemistry, Georg-August-University Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany |
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Abstract: | New pyrrole derivatives (isoindoles) have been readily prepared by the reaction of an α,β-unsaturated sulfone with ethyl isocyanoacetate in the presence of tert-BuOK in good yields. The isoindoles are converted into new porphyrins which undergo retro Diels-Alder reactions under microwave irradiation at 250 °C for 4 min to give novel annealed porphyrins in quantitative yields. |
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