期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 132, 期 50, 页码 17886-17893出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja108247t
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资金
- OChemSchool
- Carlsberg Foundation
- Foundation for Polish Science
- Swiss National Science Foundation
The first enantioselective methodology for the synthesis of electron-poor 2-hydroxyalkyl- and 2-aminoalkyl furanes is demonstrated in this study. It utilizes a highly stereoselective organocatalytic one-pot reaction cascade: epoxidation or aziridination of alpha,beta-unsaturated aldehydes followed by Feist-Benary reaction of various 1,3-dicarbonyl compounds to give the target furanes. This efficient multibond forming reaction cascade benefits from low catalyst loadings and readily available starting materials. Furthermore, the possibility to interrupt the reaction sequence at the stage of the corresponding optically active 2-hydroxyalkyl- and 2-aminoalkyl 2,3-dihydrofuranes with three stereogenic centers is also presented. Finally, models which account for the formation of the optically active 2,3-dihydrofuranes are proposed.
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