Palladium-Catalyzed Three-Component Diaryl Sulfone Synthesis Exploiting the Sulfur Dioxide Surrogate DABSO
作者:Edward J. Emmett、Barry R. Hayter、Michael C. Willis
DOI:10.1002/anie.201305369
日期:2013.11.25
SO(2) efficient: A three‐component palladium‐catalyzed coupling of aryl lithium compounds; sulfur dioxide (provided by the easy‐to‐handle solid surrogate, DABSO); and aryl, heteroaryl, and alkenyl (pseudo)halides yields a diverse library of sulfones. An electron‐poor XantPhos‐type ligand suppresses aryl–aryl exchange and is key to obtaining high yields.
SO(2)高效:芳基锂化合物的三组分钯催化偶联;二氧化硫(由易于处理的固体替代物 DABSO 提供);和芳基、杂芳基和烯基(伪)卤化物产生不同的砜库。缺电子 XantPhos 型配体抑制芳基-芳基交换,是获得高产率的关键。