From Wires to Cables: Attempted Synthesis of 1,3,5-Trifluorenylcyclohexane as a Platform for Molecular Cables
作者:Marat R. Talipov、Sameh H. Abdelwahed、Khushabu Thakur、Scott A. Reid、Rajendra Rathore
DOI:10.1021/acs.joc.5b02792
日期:2016.2.19
analogues (DFCs) were systematically investigated both experimentally (X-ray crystallography) and theoretically (DFT calculations). Although the syntheses of DFCs were successfully achieved, the synthesis of TFC, which involved a similar intramolecular Friedel–Crafts cyclization as the last step, was unsuccessful. An exhaustive study of the conformational landscape of cyclohexane ring of TFC and DFCs
在单个组件中编织在一起的多条分子线,称为分子电缆,是有效进行长距离电荷传输的有前途的下一代材料。作为构建分子电缆平台的一个例子,对1,3,5-三芴基环己烷(TFC)及其二芴基类似物(DFC s)进行了系统的实验研究(X射线晶体学)和理论上的研究(DFT计算)。尽管成功地完成了DFC的合成,但最后一步涉及分子内Friedel-Crafts分子内类似的环化的TFC合成仍未成功。对TFC和DFC的环己烷环构象进行详尽的研究。s揭示TFC是一个中等应变的分子(〜17 kcal / mol),并且对反应曲线的计算研究表明,这种处于过渡态的空间应变是导致异常高(约5年)反应的一半。生活。TFC的成功合成将需要在多个步骤中引入空间菌株,目前正在探索这种替代策略。