A New Family of Tropylium Ions: Tropone-Triarylborane Complexes
A New Family of Tropylium Ions: Tropone-Triarylborane Complexes
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托吡酮离子的新家族：托酮-三芳基硼烷复合物
DOI：
10.1002/ejic.202200430
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发表时间：
2022
影响因子：
2.3
通讯作者：
Junji
中科院分区：
文献类型：
--
作者：
Kinoshita;Ryo; Tomura;Fumiya; Fujita;Takeshi; Ichikawa;Junji
通过用等摩尔量的 B(C6F5)3 处理托酮（包括苯并稠合衍生物），以优异的产率合成了空气和热稳定的托酮 - 三芳基硼烷 1 : 1 配合物。 NMR、X射线分析和DFT计算，包括核独立化学位移（NICS）和感应电流密度各向异性（ACID）研究表明，托酮-三芳基硼烷复合物具有由托吡鎓和硼酸盐部分组成的甜菜碱结构，其芳香性取决于稠合苯环的数量。
Air‐ and thermally stable tropone–triarylborane 1 : 1 complexes were synthesized in excellent yields by treating tropones, including benzo‐fused derivatives, with an equimolar amount of B(C6F5)3. NMR and X‐ray analyses and DFT calculations including nuclear independent chemical shift (NICS) and anisotropy of the induced current density (ACID) studies revealed that the tropone–triarylborane complexes have betaine structures consisting of tropylium and borate moieties and that their aromaticity depends on the number of fused benzene rings.