A quadruple helicene with a rubicene core: synthesis, structural analyses and properties
A quadruple helicene with a rubicene core: synthesis, structural analyses and properties
复制标题
具有红二烯核心的四螺旋烯:合成、结构分析和性质
DOI:
10.1007/s11426-020-9913-5
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发表时间:
2021-01
期刊:
影响因子:
--
通讯作者:
Hua Jiang
中科院分区:
文献类型:
--
作者:
Qi Xu;Chu Wang;Dan Zheng;Ying Wang;Xuebo Chen;Di Sun;Hua Jiang
We report the synthesis of a quadruple helicene with a rubicene coreR1by a Scholl reaction. Among the 10 stereoisomers including 4 pairs of enantiomers and 2 meso isomers, only 2 pairs of enantiomers and 1 meso isomer have been isolated. The sample structures were unambiguously determined by X-ray crystallography to be (P,P)6-(P,P)5/(M,M)6-(M,M)5-R1-A, which has a propeller-shaped structure, and (M,M)6-(P,P)5/(P,P)6-(M,M)5-R1-Band (M,P)6-(P,M)5-R1-C, which have saddle-shaped structures. The chiral resolutions ofR1were carried out by chiral HPLC, revealing two pairs of chiral stereoisomers (P,P)6-(P,P)5/(P,P)6-(M,M)5, (M,M)6-(P,P)5/(M,M)6-(M,M)5as well as a meso isomer (M,P)6-(P,M)5, which were further characterized by CD spectroscopy and time-dependent density functional theory (TD-DFT) calculations. Surprisingly, the UV-vis absorption and emission spectra of these resolved stereoisomers and unresolvedR1were almost identical. In addition, the chemical oxidation ofR1led to the formation of radical cations and dications at room temperature.
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DOI:
10.1002/chem.201902915
发表时间:
2019-09
期刊:
Chemistry (Weinheim an Der Bergstrasse, Germany)
影响因子:
--
作者:
J. Suresh;G. Whitener;G. Theumer;Dirk J. Bröcher;I. Bauer;W. Massa;H. Knölker
通讯作者:
J. Suresh;G. Whitener;G. Theumer;Dirk J. Bröcher;I. Bauer;W. Massa;H. Knölker
影响因子:
15
作者:
Liu, Junzhi;Narita, Akimitsu;Muellen, Klaus
通讯作者:
Muellen, Klaus
影响因子:
2.9
作者:
Herges, R;Geuenich, D
通讯作者:
Geuenich, D
影响因子:
15
作者:
Yanpeng Zhu;Xiaoyu Guo;Yang Li;Jiaobing Wang
通讯作者:
Yanpeng Zhu;Xiaoyu Guo;Yang Li;Jiaobing Wang
影响因子:
3.6
作者:
Saito, Hiromu;Uchida, Akira;Watanabe, Soichiro
通讯作者:
Watanabe, Soichiro