A New Complex of Palladium−Thiourea and Carbon Tetrabromide Catalyzed Carbonylative Annulation of o-Hydroxylarylacetylenes: Efficient New Synthetic Technology for the Synthesis of 2,3-Disubstituted Benzo[b]furans
- 6 January 2000
- journal article
- Published by American Chemical Society (ACS) in Organic Letters
- Vol. 2 (3) , 297-299
- https://doi.org/10.1021/ol991327b
Abstract
[reaction: see text] A highly effective cocatalysis system (PdI2-thiourea and CBr4) was developed for carbonylative cyclization of both electron-rich and electron-deficient o-hydroxylarylacetylenes to the corresponding methyl benzo[b]furan-3-carboxylates.Keywords
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