通过碘二十二碳六烯与CuSCF 3的反应,可以轻松以高收率轻松合成三氟甲硫基取代的氢化萘。氧化用的元氯过苯甲酸(米CPBA)得到其表现出引起的单一取代基的氧化还原电位的最大阳极移相应的磺酰基化合物。同样地,在1,2,5,6-四碘或1,2,5、1,2,5,6,5,6-三氢化萘中的1,2,5,6-位引入了四个SCF 3,SC 6 F 5和SeC 6 F 5取代基,分别为6-四溴邻并戊二烯。该反应在极性非质子溶剂中进行,据信遵循S NAr型替代机制。通过X射线晶体学阐明了所选化合物的晶体和分子结构。三氟甲磺酰基cor喃烯和四倍取代的三氟甲硫醚表现出碗的完美柱状堆积。通过循环伏安法对取代的Corannulenes进行了电化学研究,由于吸电子基团的取代,产生了较大的阳极位移。
Chemistry on the rim of buckybowls: derivatization of 1,2,5,6-tetrabromocorannulene
作者:Guopin Xu、Andrzej Sygula、Zbigniew Marcinow、Peter W Rabideau
DOI:10.1016/s0040-4039(00)01785-8
日期:2000.12
Synthesis of a number of substituted corannulenes and dibenzo[a,g]corannulenes starting from 1,2,5,6-tetrabromocorannulene 3 is described. Since 3 is conveniently obtained by a large scale, non-pyrolytic route, it may serve as a synthon for the further elaboration of this bowl-shaped system. (C) 2000 Elsevier Science Ltd. All rights reserved.