化学
三氟甲磺酸
钪
硼
位阻效应
锂(药物)
碳氢化合物
氟化物
多环芳烃
芳香烃
衍生工具(金融)
循环伏安法
药物化学
卟啉
光化学
无机化学
立体化学
有机化学
物理化学
催化作用
电极
医学
金融经济学
经济
电化学
内分泌学
作者
Valentin M. Hertz,Naoki Ando,Masato Hirai,Michael Bolte,Hans‐Wolfram Lerner,Shigehiro Yamaguchi,Matthias Wagner
出处
期刊:Organometallics
[American Chemical Society]
日期:2016-12-08
卷期号:36 (14): 2512-2519
被引量:43
标识
DOI:10.1021/acs.organomet.6b00800
摘要
The highly reactive boron-doped polycyclic aromatic hydrocarbon 8H-8-bromo-8-borabenzo[gh]tetraphene has been synthesized via a multistep sequence encompassing a Peterson olefination, a stilbene-type photocyclization, and an Si/B exchange reaction. The compound was subsequently treated with mesityllithium to give the derivative 3 or with [2,6-bis(propen-2-yl)phenyl]lithium to furnish the intermediate 4. A scandium(III) triflate mediated Friedel–Crafts reaction transformed 4 into the rigid, planarized triarylborane 5. Compounds 3 and 5 are both inert toward air and moisture but are still able to bind fluoride ions, where the affinity of 3 in CHCl3 is higher than that of 5. Both arylboranes are yellow solids, and their solutions exhibit an intense blue fluorescence (ΦPL = 85% (3), 89% (5)). According to cyclic voltammetry, reversible reduction occurs at half-wave potentials of E1/2 = −2.05 V (3) and −2.14 V (5; in THF, vs FcH/FcH+). The crystal lattices consist of π-stacked dimers, arranged in herringbone patterns. Importantly, 3 and 5 share nearly identical properties, despite possessing fundamentally different structures.
科研通智能强力驱动
Strongly Powered by AbleSci AI