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Highly enantioselective conjugate addition of malononitrile to 2-enoylpyridines with bifunctional organocatalyst
N. Molleti, , V.K. Singh
Published in
2012
Volume: 14
   
Issue: 17
Pages: 4322 - 4325
Abstract
An efficient enantioselective conjugate addition of malononitrile to a range of β-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. © 2012 American Chemical Society.
About the journal
JournalOrganic Letters
ISSN15237060