Journal
ORGANIC LETTERS
Volume 14, Issue 17, Pages 4322-4325Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ol3015607
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Funding
- Department of Science and Technology (DST), India
- Council of Scientific and Industrial Research (CSIR), New Delhi
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An efficient enantioselective conjugate addition of malononitrile to a range of beta-substituted 2-enoylpyridines catalyzed by cinchona alkaloid-based bifunctional urea catalysts has been developed. Both enantiomers of the products could be achieved with the same level of enantioselectivity by using pseudoenantiomeric catalysts in up to 97% ee and in excellent yields. One of the enantioenriched products has been transformed to a highly functionalized piperidone derivative.
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