A synthesis of 2- and 4(5)-(2-pyridinyl)imidazoles by palladium-catalysed cross-coupling reactions
作者:A.S. Bell、D.A. Roberts、K.S. Ruddock
DOI:10.1016/s0040-4039(00)80667-x
日期:1988.1
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。