6533b7ddfe1ef96bd127409a
RESEARCH PRODUCT
Asymmetric Synthesis of Spiro β-Lactamsviaa Squaramide- Catalyzed Sulfa-Michael Addition/Desymmetrization Protocol
Suruchi MahajanDieter EndersUğur KayaArto ValkonenKari RissanenPankaj Chauhansubject
010405 organic chemistryChemistryStereochemistrybeta-lactamsasymmetric synthesisEnantioselective synthesisSquaramideGeneral Chemistry010402 general chemistry01 natural sciencesDesymmetrization0104 chemical sciencesKinetic resolutionStereocenterCatalysisOrganocatalysisMichael reactionta116description
An efficient asymmetric synthesis of spirocyclohexenone β-lactams bearing three contiguous stereocenters has been achieved in moderate to good yields and high stereoselectivities. The protocol involves the combination of a squaramide-catalyzed sulfa-Michael addition under desymmetrization via a dynamic kinetic resolution of racemic 2,5-cyclohexadienones.
year | journal | country | edition | language |
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2016-08-31 | Advanced Synthesis & Catalysis |