| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5274651 | Tetrahedron Letters | 2008 | 4 Pages |
Abstract
We report a regiocontrolled 6-endo-dig cyclization of 2-(2-arylethynyl)heteroaryl esters occurred under Brønsted acidic conditions and in the presence of a catalytic amount of Lewis acids such as Cu(OTf)2, AuCl3, or (CF3CO2)Ag. A variety of heterocyclic lactones are readily prepared in excellent yields.
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Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Malik Hellal, Jean-Jacques Bourguignon, Frédéric J.-J. Bihel,