ChemInform Abstract: Formation of Fluorene and Anthracene Derivatives in Reactions of Perfluorinated 1-Alkyl-1-phenyl- and 1-Alkyl-2-phenyl-1,2-dihydrocyclobutabenzenes with Antimony Pentafluoride.

ChemInform ◽  
2011 ◽  
Vol 43 (1) ◽  
pp. no-no
Author(s):  
T. V. Mezhenkova ◽  
V. M. Karpov ◽  
V. E. Platonov
Keyword(s):  
Antimony Pentafluoride ◽  
Anthracene Derivatives

Double Ring-Closing Approach for the Synthesis of 2,3,6,7-Substituted Anthracene Derivatives

2020 ◽  
Author(s):  
Birgit Meindl ◽  
Katharina Pfennigbauer ◽  
Berthold Stöger ◽  
Martin Heeney ◽  
Florian Glöcklhofer
Keyword(s):  
Wittig Reaction ◽  
Condensation Reaction ◽  
Synthetic Methods ◽  
Anthracene Derivative ◽  
Double Ring ◽  
Mild Conditions ◽  
Wide Range ◽  
Anthracene Derivatives

Anthracene derivatives have been used for a wide range of applications and many different synthetic methods for their preparation have been developed. However, despite continued synthetic efforts, introducing substituents in some positions has remained difficult. Here we present a method for the synthesis of 2,3,6,7-substituted anthracene derivatives, one of the most challenging anthracene substitution patterns to obtain. The method is exemplified by the preparation of 2,3,6,7-anthracenetetracarbonitrile and employs a newly developed, stable protected 1,2,4,5-benzenetetracarbaldehyde as the precursor. The precursor can be obtained in two scalable synthetic steps from 2,5-dibromoterephthalaldehyde and is converted into the anthracene derivative by a double intermolecular Wittig reaction under very mild conditions followed by a deprotection and intramolecular double ring-closing condensation reaction. Further modification of the precursor is expected to enable the introduction of additional substituents in other positions and may even enable the synthesis of fully substituted anthracene derivatives by the presented approach.<br>

Formation of CT complexes and electron transfer from excited molecules of anthracene derivatives to methylviologen in aqueous and micellar media

1987 ◽  
Vol 52 (7) ◽  
pp. 1658-1665
Author(s):  
Viktor Řehák ◽  
Jana Boledovičová
Keyword(s):  
Electron Transfer ◽  
Complex Formation ◽  
Fluorescence Quenching ◽  
Rate Constant ◽  
Formation Constants ◽  
Dynamic Quenching ◽  
Micellar Media ◽  
Complex Formation Constants ◽  
Anthracene Derivatives ◽  
Ct Complexes

Disodium 1,5- and 1,8-anthracenedisulphonate (ADS) and 9-acetylanthracene form coloured CT complexes with methylviologen (MV2+) in aqueous and micellar media. The complex formation constants and molar absorptivities were determined by the Benesi-Hildebrandt method. In the fluorescence quenching, its static component plays the major role. The dynamic quenching component is determined by the rate constant of electron transfer from the S1 state of ADS to MV2+.

The Alicyclic Ring Contraction of Perfluoro-1-phenyltetralin in Reaction with Antimony Pentafluoride.

ChemInform ◽  
2004 ◽  
Vol 35 (19) ◽  
Author(s):  
Vladimir R. Sinyakov ◽  
Tatyana V. Mezhenkova ◽  
Victor M. Karpov ◽  
Vyacheslav E. Platonov
Keyword(s):  
Antimony Pentafluoride ◽  
Ring Contraction

Ring Construction by 1,1‐Carboboration; Making Anthracene Derivatives from a Tetra(alkynyl)benzene

2021 ◽  
Author(s):  
Gerhard Erker ◽  
René Liedtke ◽  
Sabrina Surmiak ◽  
Xiaoming Jie ◽  
Constantin G. Daniliuc ◽  
...  
Keyword(s):  
Anthracene Derivatives
Sign in / Sign up

Export Citation Format

Share Document