Journal
SYNTHESIS-STUTTGART
Volume 45, Issue 12, Pages 1654-1658Publisher
GEORG THIEME VERLAG KG
DOI: 10.1055/s-0033-1338434
Keywords
thiourea; Michael Addition; cinchona alkaloid; vinyl sulfone; nitrophosphonate
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Funding
- National University of Singapore [R-143-000-469-112]
- Ministry of Education (MOE) of Singapore [R-143-000-494-112]
- GSK-EDB [R-143-000-491-592]
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Organocatalytic asymmetric Michael reaction of alpha-substituted nitrophosphonates to phenyl vinyl sulfone catalyzed by cinchona alkaloid-derived tertiary amine-thioureas afforded alpha,alpha-disubstituted nitrophosphonates in very good yields and excellent enantiomeric excesses.
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