Synthesis of a Benzoannelated Spheriphane (Globular Cyclophane) on the Way to Potential Precursors of C<sub>60</sub>-Fullerene
作者:Dietmar Kuck、Jens Nierle
DOI:10.1055/s-2006-951497
日期:2006.11
A viable route to the novel globular cyclophane 2, a C48H36-spheriphane, is presented as a result of our research aimed at the synthesis of the hypothetical deciphenyl 3, a C60H36-spheriphane, which has been envisaged as a potential precursor to C60-fullerene. Several syntheses of the key intermediate of the route to 2, viz. septiphenyl 13 (C48H42), a sterically crowded 1,3,5-tris(ortho-biphenylyl)benzene derivative, are described. These include threefold Heck coupling and related threefold Pd(0)-catalyzed C-C cross-coupling reactions, as well as threefold benzoannelation involving tetrachlorothiophene-S,S-dioxide and PET-induced dehalogenation of highly chlorinated septiphenyl derivatives.
我们的研究旨在合成假想的十联苯 3(C60H36-spheriphane),它被设想为 C60-fullerene 的潜在前体,在此基础上,我们提出了一条通向新型球状环烷 2(一种 C48H36-spheriphane)的可行路线。本文介绍了通向 2 的关键中间体,即七联苯 13 (C48H42)(一种立体拥挤的 1,3,5-三(正联苯基)苯衍生物)的几种合成方法。这些反应包括三重赫克偶联反应和相关的三重钯(0)催化 C-C 交叉偶联反应,以及涉及四氯噻吩-S,S-二氧化物的三重苯通道化反应和 PET 诱导的高度氯化庚基苯衍生物脱卤反应。