Tetrahedron Letters p. 2775 - 2778 (1987)
Update date:2022-08-03
Topics:
Chiu, Pak-Kan
Sammes, Michael P.
3-Ethoxycarbonyl-3H-pyrroles are converted via thermal <1,5>-ester shifts to the isomeric 1H-pyrrole-4- and N-esters.Isolable intermediate 2H-pyrroles are converted into the same products, and also into the 3H-pyroles, demonstrating conclusively the reversibility of the 3H- to 2H-pyrrole interconversion.
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