ChemInform Abstract: Synthesis of 5H-Pyr
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J. BERGMAN; H. VALLBERG
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Article
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2010
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John Wiley and Sons
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Synthesis of 5H-Pyrazino(2,3-b)indoles from Indole-2,3-dione Derivatives. -The reaction of the N-acetylisatins (I) with ethylenediamine yields the products (III). After dehydrogenation these compounds and their analogues (IV) after deacetylation are cyclized by heating to the title products (VI). N