Synlett ( IF 1.7 ) Pub Date : 2022-04-01 , DOI: 10.1055/a-1815-3619 Xiao yan Li 1 , Dongqing Lin 1 , Yun shan Xu 1 , Yang Li 1 , Ping Zhou 1 , Ai Zhong Peng 1 , Hong Jian Wang 1 , Ying Wei 2 , Yongxia Yan 3 , Wen Jing Shi 1 , sha sha Wang 4 , Linghai Xie 5
The path-selectivity and stereoselectivity of gridization pathways into fluorene-based drawing hand grids (DHGs-F) are precisely modulated through tuning acid conditions and side-chain effects. BF3·OEt2 supports the realization of the gridization path (rac-DHG1-F, yield: 82%, meso-DHG1-F, yield: 11%). On the contrary, CF3SO3H will lead to the enhancements in polymerization pathways (about 85% yield). When the side chain is a methoxyl group, rac-DHG1-F and meso-DHG1-F will be obtained. However, when the side chain is a group without an oxygen atom, only rac-DHGs-F can be obtained (de = 100%). Moreover, through excitonic physical properties, rac-DHGs-F exhibits a more π-electronic delocalization, potentially serving as the intriguing tactic strategy to modulate the optoelectronic properties.
中文翻译:
基于芴的分子纳米键的热力学主导立体选择性网格化
通过调整酸性条件和侧链效应,可以精确调节基于芴的绘图手网格 (DHGs-F) 的网格化路径的路径选择性和立体选择性。BF 3 ·OEt 2支持网格化路径的实现(rac -DHG1-F, yield: 82%, meso -DHG1-F, yield: 11%)。相反,CF 3 SO 3 H 将导致聚合途径的增强(产率约为85%)。当侧链为甲氧基时,会得到外消旋-DHG1-F和内消旋-DHG1-F。但是,当侧链是没有氧原子的基团时,只能得到rac -DHGs-F ( de= 100%)。此外,通过激子物理特性,rac -DHGs-F 表现出更多的 π 电子离域,可能作为一种有趣的策略策略来调节光电特性。