A versatile one-pot synthesis of b-carbolines by reaction of pyranoindolones with phenyl- and benzoylhydrazine.

[摘要]：The synthesis of a no. of 2-anilino- and 2-(benzoylamino)-b-carbolin-3-ones in good yields by a 1-step sequence from the reaction of pyranoindolones with phenyl- o benzoylhydrazine is described. The obsd. good regioselectivity of the reaction is discussed. Full assignment of all 1H and 13C NMR chem. shifts was unambiguously achieved.

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