An Unusual Rearrangement of a Lithiated
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Thomas Gees; W. Bernd Schweizer; Dieter Seebach
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Article
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1993
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John Wiley and Sons
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German
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Lithium 1-lithio-6,7-dimethoxy-3-methyl-2-pivaloyl-l,2,3,4-tetrahydroisoquinoline-3-carboxylate rearranges to the dilithio derivative of 5,6-dimethoxy-2-methyl-l-(pivaloylamino)indan-2-carboxylic acid (2, 2]-sigmatropic shift with retention of configuration) by 1,2-migration resembling the Wittig re