Pentakis(phenylethynyl)benzene and Hexakis(phenylethynyl)benzene: A Revision Concerning Two Far Too Similar Prototype Hydrocarbons
作者:Jens Nierle、Dieter Barth、Dietmar Kuck
DOI:10.1002/ejoc.200300644
日期:2004.2
pentakis(phenylethynyl)benzene ("pentatolane") as the major product, but no hexakis(phenylethynyl) benzene ("hexatolane") under conditions previously claimed to yield the latter hydrocarbon. As an alternative to a viable route to hexatolane described in the literature, an independent synthesis of this hydrocarbon through sixfold Sonogashira coupling of hexakis(ethynyl)benzene with iodobenzene has been
发现在苯乙炔与六碘和六溴苯之间的多重 Pd-0 催化 CC 偶联反应期间发生的先前被忽视的加氢脱卤反应产生五(苯基乙炔基)苯(“pentatolane”)作为主要产物,但没有六(苯基乙炔基)苯(“己杂环戊烷”)在先前声称产生后一种烃的条件下。作为文献中描述的可行路线的六甲苯的替代方案,已经开发了通过六(乙炔基)苯与碘苯的六重 Sonogashira 偶联来独立合成这种烃。在通过 HPLC 彻底纯化后,已经确定了己内酯和迄今未知的五烷的一些物理和光谱特性。(C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004。