Synthesis of Functionalized Triphenylenes via a Traceless Directing Group Strategy
作者:Shuai Yang、Feng Wang、Yanqi Wu、Wenkai Hua、Fengzhi Zhang
DOI:10.1021/acs.orglett.8b00071
日期:2018.3.16
A novel ligand-free Pd-catalyzed cascade reaction between o-chlorobenzoic acids and cyclic diaryliodonium salts is reported. This one-pot procedure involves a carboxylic acid directed o-arylation followed by intramolecular decarboxylative annulation affording various valuable triphenylenes, which can be further transformed into diversified building blocks for material chemistry. For the first time
报道了新型的无配体钯催化的邻氯苯甲酸和环状二芳基碘鎓盐之间的级联反应。这种一锅程序涉及羧酸定向ö-芳基化,然后进行分子内脱羧环化,得到各种有价值的三亚苯基,可以将其进一步转化为用于材料化学的多种结构单元。首次表明,芳族卤化物可以在羧酸官能团的方向上与二芳基碘鎓盐反应。还证明了该羧酸既可以用作无痕的导向基团,又可以用于以环状二芳基碘鎓盐作为π-扩展剂的经济型和一步经济型一锅双交叉偶联环化反应。