Multiply bridgehead- and periphery-substituted tribenzotriquinacenes - highly versatile rigid molecular building blocks with C-3v or C-3 symmetry

Kuck D, Schuster A, Krause RA, Tellenbröker J, Exner CP, Penk M, Bögge H, Müller A (2001)
TETRAHEDRON 57(17): 3587-3613.

Journal Article | Published | English

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Abstract
The chemical versatility of tribenzotriquinacenes as building blocks bearing rigid carbon frameworks with convex/concave molecular surfaces is presented. As revealed by X-ray single crystal structure analysis of the centro-methyl derivative, the tribenzotriquinacene skeleton adopts a perfect C-3v symmetrical conformation in the solid state. Within the crystal, the molecules are strictly aligned in stacks along the C-3v molecular axis of symmetry, at a distance of 6.0 Angstrom and with zero mutual rum along the axis. Bromination of the three benzhydrylic bridgeheads of the parent tribenzotriquinacene, of its centro-methyl homologue, in particular, and of its centro-ethyl homologue has opened a convenient access to a large variety of three-fold substituted or functionalized derivatives with C-3v Or C; molecular symmetry. Thus, several 1,4,7,10-tetrasubstituted tribenzotriquinacenes have become accessible bearing three hydrocarbon or heteroatomic groups in strictly eclipsed orientation with respect to the central substituent. A number of mono- and difunctionalized methyltribenzotriquinacenes have also been prepared. The potential of directed functionalization of the six peripheral positions of the aromatic rings, and of both the three benzhydrylic bridgeheads and the six peripheral positions of the tribenzotriquinacene framework is demonstrated with 1,4,7,10-tetramethyltribenzotriquinacene. The particular molecular topography of the tribenzotriquinacenes combined with their versatile functionalization renders these compounds promising building blocks for application in molecular and material design. (C) 2001 Elsevier Science Ltd. All rights reserved.
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Kuck D, Schuster A, Krause RA, et al. Multiply bridgehead- and periphery-substituted tribenzotriquinacenes - highly versatile rigid molecular building blocks with C-3v or C-3 symmetry. TETRAHEDRON. 2001;57(17):3587-3613.
Kuck, D., Schuster, A., Krause, R. A., Tellenbröker, J., Exner, C. P., Penk, M., Bögge, H., et al. (2001). Multiply bridgehead- and periphery-substituted tribenzotriquinacenes - highly versatile rigid molecular building blocks with C-3v or C-3 symmetry. TETRAHEDRON, 57(17), 3587-3613.
Kuck, D., Schuster, A., Krause, R. A., Tellenbröker, J., Exner, C. P., Penk, M., Bögge, H., and Müller, A. (2001). Multiply bridgehead- and periphery-substituted tribenzotriquinacenes - highly versatile rigid molecular building blocks with C-3v or C-3 symmetry. TETRAHEDRON 57, 3587-3613.
Kuck, D., et al., 2001. Multiply bridgehead- and periphery-substituted tribenzotriquinacenes - highly versatile rigid molecular building blocks with C-3v or C-3 symmetry. TETRAHEDRON, 57(17), p 3587-3613.
D. Kuck, et al., “Multiply bridgehead- and periphery-substituted tribenzotriquinacenes - highly versatile rigid molecular building blocks with C-3v or C-3 symmetry”, TETRAHEDRON, vol. 57, 2001, pp. 3587-3613.
Kuck, D., Schuster, A., Krause, R.A., Tellenbröker, J., Exner, C.P., Penk, M., Bögge, H., Müller, A.: Multiply bridgehead- and periphery-substituted tribenzotriquinacenes - highly versatile rigid molecular building blocks with C-3v or C-3 symmetry. TETRAHEDRON. 57, 3587-3613 (2001).
Kuck, Dietmar, Schuster, Andreas, Krause, Ralph A., Tellenbröker, Jörg, Exner, Christian P., Penk, Michael, Bögge, Hartmut, and Müller, Achim. “Multiply bridgehead- and periphery-substituted tribenzotriquinacenes - highly versatile rigid molecular building blocks with C-3v or C-3 symmetry”. TETRAHEDRON 57.17 (2001): 3587-3613.
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