Regioselective Synthesis ofN-Aminoisoindolones and Mono-N- and Di-N,N′-substituted Phthalazones Utilizing Hydrazine Nucleophiles in a Palladium-Catalyzed Three-Component Cascade Process
Cheminform(2008)
摘要
A palladium-catalyzed three-component cascade process for the synthesis of isoindolone and phthalazone derivatives is reported. The cascade process involves carbonylation of an aryl iodide/Michael acceptor to give an acylpalladium species which is intercepted by a hydrazine nucleophile. Intramolecular Michael addition follows to give either N-aminoisoindolones of mono-N- and di-N,N'-phthalazones depending on whether a monosubstituted or 1,2-disubstituted hydrazine nucleophile is used.
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