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Highly Enantioselective Direct Conjugate Addition of Ketones to Nitroalkenes Promoted by A Chiral Primary Amine−Thiourea Catalyst

Huang, Hongbing, Jacobsen, Eric N.·2006·Journal of the American Chemical Society

Abstract

Primary amine-thiourea derivative 1 is an active and highly enantioselective catalyst for the conjugate addition of ketones to nitroalkenes. Broad substrate scope is described, with nitroalkenes bearing either aromatic or aliphatic substituents and a wide variety of ketones shown to be useful reacting partners. Ethyl ketones react preferentially, generating anti products with methyl-bearing stereocenters with good-to-excellent diastereoselectivity. An enamine mechanism is indicated, with cooperative activation of the electrophile by the thiourea and of the ketone by the primary amine.

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Authors
Huang, H., & Jacobsen, E. N.
Venue
Journal of the American Chemical Society
Published
2006-05-12
Volume
128
Issue
22
Pages
7170-7171
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
OpenAlex
W2032232114
Cited by
446
References
0
FWCI
31.11
Type
journal article
Language
en
Open access
closed

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.