A straightforward access to the title compounds was established by Pd-catalyzed Negishi cross-coupling reactions of the readily available bromides 3 and 6 with various functionalized zinc reagents (71-97% yield).
通过易得的
溴化物3和6与各种官能化
锌试剂的
钯催化的根岸偶联反应,建立了一种合成目标化合物的直接方法(产率71-97%)。