Abstract
IT has already been reported1 that the action of acids on 9-acetyl-10 : 11-dihydroxyhexahydrocarbazole yields an oxindole instead of a pseudo-indoxyl derivative, and this was confirmed by the synthesis of the latter, found to be identical with the so-called ‘11-hydroxytetrahydrocarbazolenine’.
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PLANT, S., ROBINSON, R. & TOMLINSON, M. Revision of Structural Interpretations among Tetrahydrocarbazole Derivatives. Nature 165, 928 (1950). https://doi.org/10.1038/165928a0
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DOI: https://doi.org/10.1038/165928a0
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