Abstract
Oxyallyl cations generated in situ from dihaloketones have been found to undergo the Favorskii rearrangement in preference to an intramolecular Type-II 4 + 3 cycloaddition reaction in trifluoroethanol and hexafluoropropan-2-ol solvents, generating acrylate esters with high cis selectivity. A synthetic alternative to the intramolecular Type-II 4 + 3 cycloaddition has been developed on the basis of intramolecular enolate alkylation to close a 7-membered ring with an exocyclic double bond.
Original language | English |
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Pages (from-to) | 7899-7902 |
Number of pages | 4 |
Journal | The Journal of Organic Chemistry |
Volume | 68 |
Issue number | 20 |
Early online date | 9 Sept 2003 |
DOIs | |
Publication status | Published - 1 Oct 2003 |