ChemInform Abstract: Highly Efficient and Tunable Synthesis of Dioxabicyclo[4.2.1] Ketals and Tetrahydropyrans via Gold-Catalyzed Cycloisomerization of 2-Alkynyl-1,5-diols.
β Scribed by Le-Ping Liu; Gerald B. Hammond
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 39 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0931-7597
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## Abstract The palladiumβcatalyzed haloallylation of alkynes (I) in dichloromethane leads stereoselectively to (E)βdihalodienes (III), whereas (Z)βisomers (IV) are readily obtained by the same reaction in acetic acid in the presence of lithium halides.
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