ChemInform Abstract: Synthesis of Polycyclic 1,2-Dioxanes from Endoperoxides.
β Scribed by C. W. JEFFORD; H. ESCHENHOF; G. BERNARDINELLI
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 29 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0931-7597
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β¦ Synopsis
Synthesis of Polycyclic 1,2-Dioxanes from Endoperoxides. -Freshly prepared endoperoxides such as (I) undergo a Tms-O-Tf-catalyzed reaction with olefins (II) to give the 1,2-dioxane (III), albeit in low yield. However, the endoperoxide (IV) derived from 1,4-dimethylnaphthalene provides far more promising results.
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Synthesis Structure and Mesomorphism of 2,5-Disubstituted 1,3-Dioxanes. -The trans-configurated title compounds of type (III) are isolated from 3:1 mixtures of trans/cis isomers. The mesomorphous properties of (III) depend on the existence of halogen atoms in Ξ±-position to the carbonyl group and th
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