materials applications. Unfortunately, their use has been limited by the lengthy syntheses of their functionalized derivatives. This communication describes a highly efficient, brief, divergent paradigm for the preparation of octakis-substituted pentiptycene derivatives that starts with the preparation of an octakis(bromo) compound, which can be used as a Pd(0)-catalyzed coupling partner with suitable organometallic
戊二烯具有刚性的稠合聚芳族骨架和定义明确,高度对称的分子几何形状,是用于各种材料应用的有吸引力的构建基块。不幸的是,它们的使用受到其官能化衍
生物的冗长合成的限制。该通报描述了一种高效,简短,分歧的范式,用于制备辛基取代的
戊烯并
戊烯衍
生物,该方法从制备辛基(
溴)化合物开始,该化合物可与适当的有机
金属一起用作Pd(0)催化的偶联配偶体在外围2,3,6,7,14,15,19,20位置以高收率安装一系列基团的化合物,包括甲基,烯丙基,
乙烯基,炔基,芳基,杂芳基,甚至大体积的4-(三苯基甲基) )苯基取代基。