2021年5月25日
Asymmetric Diels–Alder reaction between furans and propiolates
Tetrahedron Letters
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- 巻
- 72
- 号
- DOI
- 10.1016/j.tetlet.2021.153075
- 出版者・発行元
- Tetrahedron Letters
We report the first asymmetric Diels–Alder reaction between furan and propiolates. Propiolate, a dienophile, was equipped with an Evans’ auxiliary and a sulfonyl group to control and facilitate diastereoselective cycloaddition. Treatment with furan as a diene and aluminium Lewis acid afforded a 7-oxabicyclo[2.2.1]heptadiene skeleton diastereoselectively. The origin of diastereoselectivity can be explained by chelation of aluminium center to carbonyl groups and oxygen of furan. Friedel–Crafts-type products were obtained when pyrrole was used as diene.
- リンク情報
- ID情報
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- DOI : 10.1016/j.tetlet.2021.153075
- ISSN : 0040-4039
- eISSN : 1873-3581