An Efficient Catalyst for Pd-Catalyzed Carbonylation of Aryl Arenesulfonates

Autor: Cai, Chaoxian, R. Rivera, Nelo, Balsells, Jaume, R. Sidler, Rick, Christopher McWilliams, J., Scott Shultz, C., Sun, Yongkui
Zdroj: Organic Letters; October 2006, Vol. 8 Issue: 22 p5161-5164, 4p
Abstrakt: Aryl carboxylic esters were synthesized by Pd-catalyzed carbonylation of aryl p-fluorobenzenesulfonates or -tosylates. A unique Josiphos ligand was discovered through high-throughput catalyst screening, which was the key for the successful carbonylation of various substrates. This catalyst is effective and works well for both electron-rich and electron-poor aryl arenesulfonates. Isolated yields of up to 90% were obtained for aryl p-fluorobenzenesulfonates and -tosylates.
Databáze: Supplemental Index