From Fenestrindane towards Saddle-Shaped Nanographenes Bearing a Tetracoordinate Carbon Atom

Wong W-S, Ng C-F, Kuck D, Chow H-F (2017)
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 56(40): 12356-12360.

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Abstract
Two saddle-shaped polycyclic aromatic compounds (8a and 8b) bearing an all-cis-[5.5.5.5]fenestrane core surrounded by an o,p,o,p,o,p,o,p-cyclooctaphenylene belt were synthesized and characterized by NMR spectroscopy and mass spectrometry. The key step of this synthesis involves the formation of four cycloheptatriene rings from the corresponding electron-rich 1,4,9,12-tetraarylfenestrindane derivatives 7a and 7b in Scholl-type cyclizations. The structural details of the D-2d-symmetric saddle compound 8a were determined by X-ray crystallography, and the properties of 8a and 8b were studied by UV/Vis and fluorescence spectroscopy and cyclic voltammetry.
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Wong W-S, Ng C-F, Kuck D, Chow H-F. From Fenestrindane towards Saddle-Shaped Nanographenes Bearing a Tetracoordinate Carbon Atom. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION. 2017;56(40):12356-12360.
Wong, W. - S., Ng, C. - F., Kuck, D., & Chow, H. - F. (2017). From Fenestrindane towards Saddle-Shaped Nanographenes Bearing a Tetracoordinate Carbon Atom. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 56(40), 12356-12360. doi:10.1002/anie.201707505
Wong, W. - S., Ng, C. - F., Kuck, D., and Chow, H. - F. (2017). From Fenestrindane towards Saddle-Shaped Nanographenes Bearing a Tetracoordinate Carbon Atom. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 56, 12356-12360.
Wong, W.-S., et al., 2017. From Fenestrindane towards Saddle-Shaped Nanographenes Bearing a Tetracoordinate Carbon Atom. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 56(40), p 12356-12360.
W.-S. Wong, et al., “From Fenestrindane towards Saddle-Shaped Nanographenes Bearing a Tetracoordinate Carbon Atom”, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, vol. 56, 2017, pp. 12356-12360.
Wong, W.-S., Ng, C.-F., Kuck, D., Chow, H.-F.: From Fenestrindane towards Saddle-Shaped Nanographenes Bearing a Tetracoordinate Carbon Atom. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION. 56, 12356-12360 (2017).
Wong, Wai-Shing, Ng, Chun-Fai, Kuck, Dietmar, and Chow, Hak-Fun. “From Fenestrindane towards Saddle-Shaped Nanographenes Bearing a Tetracoordinate Carbon Atom”. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 56.40 (2017): 12356-12360.
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