Selective and efficient transformation of 5,6,7,8-tetrahydro-2H-1-benzopyran-2,5-d iones with hydrazines to 5-hydrazono-2H-1-benzopyran-2-ones and quinoline-2,5-diones. Extension to related systems

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Trebse, P.
Polanc, S.
Kocevar, M.
Solmajer, T.
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Tetrahedron | / 53卷 / 04期
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