N-Substituted imidazolylzinc chlorides were reacted with 2-bromopyridine in the presence of Pd(PPh3)4 and a two-fold excess of ZnCl2 to afford cross-coupled products in 58–93% yields. Deprotection provided convenient routes to 2- or 4(5)-(2-pyridinyl)imidazoles.
在Pd(PPh 3)4和两倍过量的ZnCl 2存在下,将N取代的
咪唑基
氯化锌与2-
溴吡啶反应,以58-93%的产率提供交叉偶联的产物。脱保护为2-或4(5)-(2-
吡啶基)
咪唑提供了便利的途径。