The cyclization phase of the fischer ind
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Richard J. Owellen; James A. Fitzgerald; Berenice M. Fitzgerald; David A. Welsh;
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Article
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1967
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Elsevier Science
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French
β 300 KB
Plieninger (1) reported that the phenywdrazone of a-keto-y-butyrolactone (I), when subjected to the conditions appropriate for the Fischer indole synthesis (treatment with hydrogen chloride in glacial acetic acid at 900), rearranged to form a product for which the structure 11 was suggested. The lat