Palladium-catalyzed carbonylative cyclization of β-bromo-α,β-unsaturated carboxylic acids with 2,2-dimethylhydrazine leading to 1-(dimethylamino)-1H
-pyrrole-2,5-diones
Palladium-catalyzed three-component cyclization of 2-bromocyclohex-1-enecarboxylic acids with carbon monoxide and arylhydrazines leading to 2-anilinohydroisoindoline-1,3-diones