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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 32, 2002 - Issue 6
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Original Articles

SYNTHESIS OF ETHYL PYRROLE-2-CARBOXYLATES: A REGIOSELECTIVE CYCLIZATION OF ENAMINONES UNDER KNORR-TYPE CONDITIONS

Ibrahim Elghamry Division of Organic Chemistry, FB6, Gerhard-Mercator-University Duisburg, Duisburg, D-47048, Germany
Pages 897-902 | Received 06 Apr 2001, Published online: 16 Aug 2006
 
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ABSTRACT

A regioselective formation of ethyl pyrrole-2-carboxylates 4 and 5 is effected by reductive condensation of enaminones 1a–f and ethyl 2-oximinoacetoacetate 2. The structures of the products have been delineated by spectroscopic methods.

ACKNOWLEDGMENT

The author is deeply indebted to Alexander von Humboldt Foundation for award of a research fellowship at Duisburg University (Germany).

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