Abstract
Palladium(0)-catalyzed one-atom ring expansion of various hydroxy methoxyallenylisoindolinones 2 proceeded in the presence of aryl and vinyl halides to give the corresponding isoquinolinediones 3 in various yields. Tandem intramolecular carbopalladation-heterocyclic ring expansion reaction of compound 5 was also achieved to give a tetracyclic compound 6.
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