Superelectrophilic-initiated C-H functionalization at the β-position of thiophenes: A one-pot synthesis of trans-stereospecific saddle-shaped cyclic compounds

Ying Wei, Xiangping Zheng, Dongqing Lin, Haoxuan Yuan, Zhipeng Yin, Lei Yang, Yang Yu, Shasha Wang, Ling Hai Xie, Wei Huang

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摘要

Superelectrophilic-initiated direct C-H functionalization of thiophenes at the β-position was developed. A series of trans-stereospecific [2,1-a]-IF-thiophene-fused cyclic compounds (4) with saddle-shaped structure were prepared in 17-30% yields through a one-pot superelectrophilic Friedel-Crafts reaction of dihydroindenofluorene with thiophene derivatives. From the crystal packing analyses of 4a, its skeleton shows both strong intermolecular π-πstacking and C-H···πstacking. Furthermore, the ring-dependent photophysical properties of 4 were confirmed by UV-vis absorption and photoluminescence spectroscopy as well as through the study of their fluorescence quantum yield.

源语言英语
页(从-至)10701-10709
页数9
期刊Journal of Organic Chemistry
84
17
DOI
出版状态已出版 - 6 9月 2019

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