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 |
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页(从-至) | 10701-10709 |
页数 | 9 |
期刊 | Journal of Organic Chemistry |
卷 | 84 |
期 | 17 |
DOI | |
出版状态 | 已出版 - 6 9月 2019 |