Straightforward Synthesis and Properties of Highly Fluorescent [5]- and [7]-Helical Dispiroindeno[2,1-c]fluorenes

0510291 - ÚOCHB 2020 RIV DE eng J - Článek v odborném periodiku
Kaiser, R. P. - Nečas, D. - Cadart, T. - Gyepes, R. - Císařová, I. - Mosinger, J. - Pospíšil, Lubomír - Kotora, M.
Straightforward Synthesis and Properties of Highly Fluorescent [5]- and [7]-Helical Dispiroindeno[2,1-c]fluorenes.
Angewandte Chemie - International Edition. Roč. 58, č. 48 (2019), s. 17169-17174. ISSN 1433-7851. E-ISSN 1521-3773
Institucionální podpora: RVO:61388963
Klíčová slova: alkynes * catalysis * cyclotrimerization * helical compounds * indenofluorene
Obor OECD: Organic chemistry
Impakt faktor: 12.959, rok: 2019
Způsob publikování: Omezený přístup
https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.201908348

This work presents a general approach for synthesis of substituted [5]-helical dispiroindeno[2,1-c]fluorenes based on Rh-catalyzed intramolecular cyclotrimerization of triynes. This approach was further extended for the first synthesis of configurationally stable [7]-helical dispiroindeno[2,1-c]fluorenes. A series of variously substituted derivatives was prepared and their photophysical and electrochemical properties were evaluated. Their fluorescence emission maxima were in the region of 351-428 nm and quantum yields up to 88 % are the highest measured among the full-carbon helical compounds.
Trvalý link: http://hdl.handle.net/11104/0300804