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Highly Enantioselective Conjugate Addition of 3-Substituted Oxindoles to Vinyl Sulfone Catalyzed by Binaphthyl-Modified Tertiary Amines
- Authors
- Lee, Hyun Joo; Kang, Seung Hee; Kim, Dae Young
- Issue Date
- Jul-2011
- Publisher
- Georg Thieme Verlag
- Keywords
- oxindole; vinyl sulfone; conjugate addition; bifunctional organocatalysis; asymmetric catalysis
- Citation
- Synlett, no.11, pp 1559 - 1562
- Pages
- 4
- Journal Title
- Synlett
- Number
- 11
- Start Page
- 1559
- End Page
- 1562
- ISSN
- 0936-5214
1437-2096
- Abstract
- The enantioselective conjugate addition reaction of 3-substituted oxindoles with 1,1-bis(benzenesulfonyl)ethylene by binaphthyl-modified bifunctional organocatalysts was investigated. The corresponding Michael adducts, containing a quaternary center at C3 position of the oxindoles, were generally obtained in high yields with excellent enantioselectivities (up to 99% ee).
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Related Researcher
- Kim, Dae Young
- College of Natural Sciences (Department of Chemistry)