作者:Matthew D. Cliff、Stephen G. Pyne
DOI:10.1055/s-1994-25544
日期:——
The palladium(0) catalysed coupling reaction of 4-iodo-1-triphenylmethylimidazole (7) or its 2-methyl analogue 8 afforded the 4,4′-biimidazoles 9 and 10, respectively. Treatment of these compounds with 60% aqueous trifluoroacetic acid gave 4,4′-biimidazole and 2,2′-dimethyl-4,4′-biimidazole as their bistrifluoroacetate salts 11 and 12, respectively.
钯(0)催化的 4-碘-1-三苯基甲基咪唑 (7) 或其 2-甲基类似物 8 的偶联反应分别生成了 4,4'-双咪唑 9 和 10。用 60% 的水合三氟乙酸处理这些化合物,得到了 4,4'-双咪唑和 2,2'-二甲基-4,4'-双咪唑,作为其双三氟乙酸盐 11 和 12。