Journal
CHEMICAL SCIENCE
Volume 10, Issue 12, Pages 3459-3465Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8sc05677c
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Funding
- JSPS KAKENHI [JP17H06442, 17H01522, 17K19479, 18H05969, 17H0310, 16K13964, 18H04650]
- Grants-in-Aid for Scientific Research [17H01522, 17K19479, 18H04650, 18H05969] Funding Source: KAKEN
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We describe a hybrid system that realizes cooperativity between an organophotoredox acridinium catalyst and a chiral chromium complex catalyst, thereby enabling unprecedented exploitation of unactivated hydrocarbon alkenes as precursors to chiral allylchromium nucleophiles for asymmetric allylation of aldehydes. The reaction proceeds under visible light irradiation at room temperature, affording the corresponding homoallylic alcohols with a diastereomeric ratio >20/1 and up to 99% ee. The addition of Mg(ClO4)(2) markedly enhanced both the reactivity and enantioselectivity.
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