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Communication | Regular issue | Vol 43, No. 11, 1996, pp.2353-2356
Published online, 1st January, 1970
DOI: 10.3987/COM-96-7604
A Short Three Components Approach to Fused Pyrrolo[2,3-b]pyrrolidinone

Yoshinari Okamoto, Tadashi Okawara, and Mitsuru Furukawa

*Faculty of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-hon-machi, Kumamoto 862-0973, Japan


4-Methyl-4-dimethoxymethylpyrans (5b) and (5c) prepared from 1,3-cyclohexanediones (2), pyruvaldehyde dimethyl acetal (3b), and malononitrile (4), were subjected to hydrolysis with HCl to give fused furofuranones (6), which were treated with amines to give fused pyrrolidinones (9).