Sixfold Peripheral Halogenation of Tribenzotriquinacenes: An Alternative Access to Useful TBTQ Building Blocks

Linke J, Bader N, Tellenbroeker J, Kuck D (2018)
SYNTHESIS-STUTTGART 50(1): 175-183.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
Download
Es wurde kein Volltext hochgeladen. Nur Publikationsnachweis!
Autor/in
; ; ;
Abstract / Bemerkung
Sixfold electrophilic bromination and iodination of the molecular periphery of the bridgehead-tetramethylated tribenzotriquinacene (TBTQ) with N-bromosuccinimide (NBS) and N-iodosuccinimide (NIS), respectively, under various conditions was studied to develop an alternative preparative approach to the classical Lewis acid catalyzed bromination. Running these reactions in trifluoroacetic acid either in pure form or with chloroform as a co-solvent at elevated temperatures, or under sonication or microwave irradiation was found to give increasingly fast and efficient conversion of TBTQ to the target hexahalogenated TBTQ derivatives in excellent yields. NIS was found to be markedly more reactive than NBS, whereas N-chlorosuccimide reacted hardly. The new method was applied to the sixfold functionalization of the 4b,8b,12b-tripropyl-12d-methyl-TBTQ analogue to give the corresponding hexabromo and hexaiodo derivatives. Some sixfold C-C cross-coupling reactions of hexahalo derivatives of TBTQ were carried out in excellent yields to enlarge the three spatially orthogonal indane wings of the TBTQ core.
Stichworte
electrophilic aromatic substitution; cross-coupling; polycycles; fused-ring systems; tribenzotriquinacenes; sonication; microwave; irradiation
Erscheinungsjahr
2018
Zeitschriftentitel
SYNTHESIS-STUTTGART
Band
50
Ausgabe
1
Seite(n)
175-183
ISSN
0039-7881
eISSN
1437-210X
Page URI
https://pub.uni-bielefeld.de/record/2916692

Zitieren

Linke J, Bader N, Tellenbroeker J, Kuck D. Sixfold Peripheral Halogenation of Tribenzotriquinacenes: An Alternative Access to Useful TBTQ Building Blocks. SYNTHESIS-STUTTGART. 2018;50(1):175-183.
Linke, J., Bader, N., Tellenbroeker, J., & Kuck, D. (2018). Sixfold Peripheral Halogenation of Tribenzotriquinacenes: An Alternative Access to Useful TBTQ Building Blocks. SYNTHESIS-STUTTGART, 50(1), 175-183. doi:10.1055/s-0036-1589107
Linke, J., Bader, N., Tellenbroeker, J., and Kuck, D. (2018). Sixfold Peripheral Halogenation of Tribenzotriquinacenes: An Alternative Access to Useful TBTQ Building Blocks. SYNTHESIS-STUTTGART 50, 175-183.
Linke, J., et al., 2018. Sixfold Peripheral Halogenation of Tribenzotriquinacenes: An Alternative Access to Useful TBTQ Building Blocks. SYNTHESIS-STUTTGART, 50(1), p 175-183.
J. Linke, et al., “Sixfold Peripheral Halogenation of Tribenzotriquinacenes: An Alternative Access to Useful TBTQ Building Blocks”, SYNTHESIS-STUTTGART, vol. 50, 2018, pp. 175-183.
Linke, J., Bader, N., Tellenbroeker, J., Kuck, D.: Sixfold Peripheral Halogenation of Tribenzotriquinacenes: An Alternative Access to Useful TBTQ Building Blocks. SYNTHESIS-STUTTGART. 50, 175-183 (2018).
Linke, Jens, Bader, Natalia, Tellenbroeker, Joerg, and Kuck, Dietmar. “Sixfold Peripheral Halogenation of Tribenzotriquinacenes: An Alternative Access to Useful TBTQ Building Blocks”. SYNTHESIS-STUTTGART 50.1 (2018): 175-183.