摘要:
The 1H-pyrrolo[3,4-c]pyridin-1-one derivatives (4a-c) were prepared through a route employing the intramolecular Die Is Alder reaction of the oxazole-olefins (3a-c). Conversion of the crotonamide (3a) into 4a was effectively promoted by the addition of Cu(OTf)(2) as a catalyst.