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Short Paper | Regular issue | Vol 83, No. 6, 2011, pp.1395-1403
Published online, 18th April, 2011
DOI: 10.3987/COM-11-12197
Formation of the 1H-Pyrrolo[3,4-c]pyridin-1-one Skeleton via Intramolecular Diels-Alder Reaction of Oxazoles

Masashi Ohba,* Kei Fukuyama, Yuko Izumi, and Masaki Inaki

*Yokohama College of Pharmacy, 601, Matano-cho, Totsuka-ku, Yokohama 245-0066, Japan

Abstract

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