期刊
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
卷 2010, 期 2, 页码 311-316出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.200901010
关键词
Allenes; Cycloisomerization; Gold; Homogeneous catalysis; Oxygen heterocycles
资金
- Deutsche Forschungsgemeinschaft (DFG)
- European Community
The stereoselective gold-catalyzed 6-endo cyclization. of various beta-hydroxyallenes in the presence of N-iodosuccinimide affords iodinated dihydropyrans in good yield. Subsequent functionalization by palladium-catalyzed cross coupling opens an access to alpha-hydroxyallenes that are converted in a second gold-catalyzed cyclization into furopyrans which occur in various natural products.
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