preparation of polyoxygenated phenanthrenes from substituted derivatives of benzaldehyde is described. The key compound is a 6,6'-biphenyl-1,1'-dicarboxaldehyde intermediate formed through an ambient temperature Ullmann coupling. The subsequent McMurry condensation gave rise to the phenanthrene in 45-57% yields.
描述了由
苯甲醛的取代衍
生物制备多氧合
菲的一般合成方法。关键化合物是通过环境温度乌尔曼偶合形成的6,6'-
联苯-1,1'-二
甲醛醛中间体。随后的McMurry缩合以45-57%的收率产生
菲。