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Communication | Regular issue | Vol 6, No. 11, 1977, pp.1821-1826
Published online, 1st January, 1970
DOI: 10.3987/R-1977-11-1821
Ketonic Character of Alkyl 3-Hydroxypyrrole-2-carboxylates: The First Entry into 2,3-Unsubstituted 4-Oxo-2-pyrrolines

Takefumi Momose,* Tetsuaki Tanaka, and Takashi Yokoto

*Faculty of Pharmaceutical Sciences, Toyama Medical and Pharmaceutical University, 2630 Sugitani, Toyama, Toyama 930-0194, Japan

Abstract

A general synthetic route to 4,5-unsubstituted 3-hydroxypyrrole-2-carboxylates (IV) has been developed, and their marked β-keto ester nature has been demonstrated on alkylation and Michael addition leading to 2,3-unsubstituted 4-oxo-2-pyrrolines.