Cross-Coupling Reactions of Potassium Alkyltrifluoroborates with Aryl and 1-Alkenyl Trifluoromethanesulfonates

摘要

The palladium-catalyzed coupling reaction of potassium alkyltrifluoroborates with aryl- or alkenyltriflates proceeds to afford the corresponidng arenes or alkenes in high yield.The borates are all solids,stable in air,and thus can be stored on the shelf indefinitely.The cross coupling can be effected using PdCl_2(dpf) centre dot CH_2Cl_2 as the catalyst in THF-H_2O in the presence fo Cs_2CO_3.A variety fo functional groups can be tolerated within the borate and/or the triflate coupling partner.