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Synlett 1997; 1997(8): 895-896
DOI: 10.1055/s-1997-954
DOI: 10.1055/s-1997-954
letter
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Preparation of Novel 6-Substituted-4-Hydroxy-2H-Pyran-2-one-3-Carboxamides and Esters via Palladium-Catalyzed Cross-Coupling Methodology
Further Information
Publication History
Publication Date:
31 December 2000 (online)
![](https://www.thieme-connect.de/media/synlett/199708/lookinside/thumbnails/10.1055-s-1997-954-1.jpg)
Novel 6-substituted-4-hydroxy-2H-pyran-2-one-3-carboxamides and esters 1 were prepared in a 2-step procedure from known 7-chloro-2,2-dimethylpyrano[4,3-d]1,3-dioxin-4,5-dione 2. Palladium catalyzed cross coupling methodology was employed in the key transformation of 2 to 4. The strategy describes a significant improvement over known literature methods.
pyrone - dioxinone - cross coupling