Base-promoted rearrangements of ester gr
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Kyu Ok Jeon; Ji Sook Yu; Chang Kiu Lee
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Article
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2007
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Journal of Heterocyclic Chemistry
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English
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## Abstract magnified image Tetramethyl 3a,7aโdihydroโ1โmethylโ1__H__โindoleโ2,3,3a,4โtetracarboxylate which is an 1:2 adduct of 1โmethylpyrrole and dimethyl acetylenedicarboxylate underwent isomerization catalyzed by sodium methoxide to form a 5,7aโdihydroโ1โmethylโ1__H__โindoleโ2,3,4,5โtetracarb