Department of Chemistry, University of Texas at Austin , Austin, Texas 78712, United States.
J Am Chem Soc. 2018 Feb 21;140(7):2455-2459. doi: 10.1021/jacs.8b00131. Epub 2018 Feb 9.
p-Bromo-terminated oligo(p-phenylenevinylenes) emanating from a 1,3,5-benzene core are dihydroxylated and subjected to ruthenium catalyzed diol-diene benzannulation to form tripodal oligo(phenylenes). Copper- or nickel-mediated 3-fold reductive biaryl homocoupling delivers a series of triple-stranded phenylene cages of helical rod-like topology bearing 14, 17, and 20 benzene rings.
p-溴代端基齐聚（对亚苯基乙烯基）从 1,3,5-苯核发出，经二羟基化处理，并在钌催化的二醇-二烯苯并环化作用下，形成三足齐聚（对亚苯基）。铜或镍介导的 3 倍还原联芳基同偶联反应，生成一系列具有 14、17 和 20 个苯环的螺旋棒状拓扑的三股苯笼。
