Journal
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
Volume 2012, Issue 35, Pages 6924-6932Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.201200928
Keywords
Asymmetric synthesis; Oxygen heterocycles; Diastereoselectivity; Domino reactions; Organocatalysis
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Funding
- National Natural Science Foundation of China (NSFC) [20902083, 21272214]
- Program for Changjiang Scholars and Innovative Research Team in Chinese Universities [IRT0980]
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The asymmetric domino reaction of various alpha,alpha-dicyano olefins to 3-nitro-2H-chromenes was studied employing readily available cinchona-derived bifunctional thioureas as organocatalysts. These new transformations were highly regio-, chemo-, diastereo-, and enantioselective simultaneously giving chiral multi-functionalized polyheterocyclic benzopyran derivatives with multi-chiral carbon centers.
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