Cycloadditions of chiral anthracenes: effect of the trifluoromethyl group
โ Scribed by Matthew S. Corbett; Xiang Liu; Amitav Sanyal; John K. Snyder
- Book ID
- 104252837
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- French
- Weight
- 177 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
Chiral anthracene template, 10-methyl-9-(1-methoxy-2,2,2-trifluoroethyl)anthracene undergoes highly diastereoselective cycloadditions with maleic anhydride and 5-acetoxy-2(5H)-furanone. Subsequent regioselective and stereoselective manipulations demonstrate the synthetic utility in conversions to enantioenriched butenolides, and elucidate the origin of diastereoselection.
๐ SIMILAR VOLUMES
The CFsgroup, in conjunction with an electron donor group, can enhance the rate of the methylenecyclopropane rearrangement. This is attributed to captodative radical stabilization of the intermediate biradical.