报道了1-乙氧基甲基-2-苯基硫代咪唑-5-基锂{Me 2 S 2,Ph 2 S 2,[(EtO)2 CHCH 2 ] 2 S 2 },1-乙氧基甲基的一些反应(括号中的试剂)-5-甲硫基-2-苯基硫代咪唑-4-基锂(Me 2 S 2,HCONMe 2,CO 2),4,5,5-二溴-1-乙氧基甲基咪唑-2-基-锂(Me 2 S 2, Ph 2 S 2)和4-溴-1-乙氧基甲基咪唑-5-基锂的2-取代衍生物(例如与Me 2一起使用)S 2),通过金属化或金属卤素交换反应制备。
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.