Bis- through Tetrakis-Adducts of C60 by Reversible Tether-Directed Remote Functionalization and systematic investigation of the changes in fullerene properties as a function of degree, pattern, and nature of functionalization
作者:Francesca Cardullo、Paul Seiler、Lyle Isaacs、Jean-Fran�ois Nierengarten、Richard F. Haldimann、Fran�ois Diederich、Tiziana Mordasini-Denti、Walter Thiel、Corinne Boudon、Jean-Paul Gisselhrccht、Maurice Gross
DOI:10.1002/hlca.19970800203
日期:1997.3.24
By the tether-directed remote functionalization method, a series of bis- to hexakis-adducts of C60, i.e., 1–7 (Fig. 1), had previously been prepared with high regioselectivity. An efficient method for the removal of the tether-reactive-group conjugate was now developed and its utility demonstrated in the regioselective synthesis of bis- to tetrakis(methano)fullerenes ( = di- to tetracyclopropafullerenes-C60-Ih)
通过系绳定向远程官能方法,到C的六加合物一系列双- 60,即,1 - 7(图1),先前已经制备具有高的区域选择性。现在已开发出一种去除系链反应性基团共轭物的有效方法,并且其在双-至四(甲基)富勒烯(=二-至四环丙烷富勒烯-C 60 - I h)9 – 11的区域选择性合成中得到了证明。从开始4,5,和7分别是(方案2,4,和5)。这种通用的方法包括在起始原料中与两个环己烯环进行1 O 2烯反应,将形成的异构烯丙基氢过氧化物的混合物还原成相应的醇,将酸2促进的H 2 O消除为环己-1,3-二烯,狄尔斯-阿德耳加成乙炔二的,逆狄尔斯-阿尔德此外,并最终酯交换反应。在串联9 - 11,所有产甲烷部分沿富勒烯的赤道带附接。从开始Ç 2V -symmetrical四加合物15,用十二烷-1-醇或辛烷-1-醇酯交换,分别得到八酯16和17,为非晶的富勒烯衍生物(方案3)。一个三氯甲烷的X射线晶体结构3