Lewis base-catalyzed asymmetric sulfenylation of alkenes: construction of sulfenylated lactones and application to the formal syntheses of (−)-nicotlactone B and (−)-galbacin

An efficient method for the preparation of chiral sulfenylated lactones has been described based on Lewis base-catalyzed enantioselective sulfenylation of unsaturated carboxylic acids. The scope of this method includes two enantioselective cyclization reactions: 5- endo and 6- exo thiolactonizations...

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Veröffentlicht in:Chemical communications (Cambridge, England) England), 2019-08, Vol.55 (63), p.9367-937
Hauptverfasser: Luo, Hui-Yun, Xie, Yu-Yang, Song, Xu-Feng, Dong, Jia-Wei, Zhu, Deng, Chen, Zhi-Min
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container_title Chemical communications (Cambridge, England)
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creator Luo, Hui-Yun
Xie, Yu-Yang
Song, Xu-Feng
Dong, Jia-Wei
Zhu, Deng
Chen, Zhi-Min
description An efficient method for the preparation of chiral sulfenylated lactones has been described based on Lewis base-catalyzed enantioselective sulfenylation of unsaturated carboxylic acids. The scope of this method includes two enantioselective cyclization reactions: 5- endo and 6- exo thiolactonizations of alkenes. Two types of lactones were obtained with up to 95% ee and 99% yield. Additionally, this methodology has been applied in the formal syntheses of bioactive natural products (−)-nicotlactone B and (−)-galbacin. An efficient method for the preparation of chiral sulfenylated lactones was described based on Lewis base-catalyzed enantioselective sulfenylation of alkenes.
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source Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection
subjects Alkenes
Carboxylic acids
Chemical reactions
Crystallography
Enantiomers
Lactones
Lewis base
Natural products
title Lewis base-catalyzed asymmetric sulfenylation of alkenes: construction of sulfenylated lactones and application to the formal syntheses of (−)-nicotlactone B and (−)-galbacin
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