Results 31 to 40 of about 630 (149)

Indandiazocines: Unidirectional molecular switches

ScienceOpen Research, 2015
We report theoretical investigations on azobenzene-based indandiazocines, novel chiral systems that perform unidirectional cis↔trans isomerizations upon photo-excitation. For three different systems of this kind, we have simulated excited-state surface-
Bernd Hartke, Tim Raeker
doaj   +1 more source

Amine-Substituted Diazocine Derivatives – Synthesis, Structure, and Photophysical Properties [PDF]

, 2018
A series of amine‐substituted diazocines were synthesized in three steps from methyl 2‐aminobenzoate or methyl 3‐aminonaphtholate. The saddle‐shaped diazocine compounds showed similar interplane angle of 75° despite the different steric bulk of the amine
White, JM, Scheerlinck, T, Wong, WWH, Bolong Zhang, Gregory, MA, Andrew J. Tilley, Jonathan M. White, Wallace W. H. Wong, Zhang, B, Tilley, AJ, Mark A. Gregory, Tamika Scheerlinck   +11 more
core   +1 more source

Triplet-Sensitized Bidirectional Isomerization of Bridged Azobenzene [PDF]

, 2023
Diazocine is a bridged azobenzene with both phenyl rings connected by a CH2-CH2 group. Despite this rather small structural difference, diazocine exhibits improved properties over azobenzene as a photoswitch, such as high switching efficiencies, very ...
Jussi, Isokuortti, Tim, Raeker, Timo, Laaksonen, Nikita A., Durandin, Rainer, Herges, Mihail A., Filatov, Thomas, Griebenow, Jan-Simon, von Glasenapp   +7 more
core   +2 more sources

6H,12H-5,11-Ethanodibenzo[b,f][1,5]diazocine

Acta Crystallographica Section E, 2008
In the molecule of the title compound, C16H16N2, the ethano-strapped analogue of unsubstituted Tröger's base, the dihedral angle between the two benzene rings is 75.85 (4)°, the smallest angle measured for an ethano-strapped analogue.
Peter Turner, Andrew C. Try, Masoud Faroughi   +2 more
doaj   +1 more source

$E$-Diazocine in Chemical Education: Synthesis, Structure, Photochromism and Thermal Stability

, 2017
Z‐diazocine, synthesized as described by Tellkamp,1 has been photochemically converted into E‐diazocine by irradiation of its solution at λ=365 nm. After purification, single crystals of E‐diazocine were obtained by recrystallization at −18 °C from n ...
Lehmann, C., Krämer, R., René Krämer, Mohr, F., Michael W. Tausch, Lehmann, Christian W., Krämer, René, Mohr, Fabian, Tausch, Michael W., Nils Nöthling, Christian W. Lehmann, Nöthling, Nils, Nöthling, N., Tausch, M., Fabian Mohr   +14 more
core   +1 more source

General Protocols for the Synthesis of C(2)-Symmetric and Asymmetric 2,8-Disubstituted Analogues of Tröger's Base via Efficient Bromine-Lithium Exchanges of 2,8-Dibromo-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine.

, 2002
Methods for facile synthesis of symmetric and unsymmetric functionalized analogues of Tröger's base were developed with use of 2,8-dibromo-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine (2) as the starting material.
Jacob Jensen, Jensen, Jacob, Wärnmark, Kenneth, Tejler, Johan, Johan Tejler, Kenneth Waernmark, Tejler, Johan,, Wärnmark, Kenneth,, Lund University., Jensen, Jacob,   +9 more
core   +2 more sources

Synthesis of mono-functionalized S-diazocines via intramolecular Baeyer–Mills reactions

Beilstein Journal of Organic Chemistry, 2018
Herein we report a reliable method to synthesize mono-functionalized S-diazocines in reproducible yields via intramolecular Baeyer–Mills reactions. Diazocines exhibit excellent photoswitchable properties. As opposed to azobenzenes they are more stable in
Miriam Schehr, Daniel Hugenbusch, Tobias Moje, Christian Näther, Rainer Herges   +4 more
doaj   +1 more source

Design and Synthesis of a Novel Banana-Shaped Functional Molecule via Double Cross-Coupling

Molecules, 2019
A novel banana-shaped molecule using 2,8-Dimethyl-6H,12H-5,11-methanodibenzo [b,f] [1,5]diazocine (Tröger’s base) as bent-core was synthesized via double Carbon-Carbon cross-coupling reaction. The double Sonogashira cross-coupling reaction was
Bingchuan Yang, Guodong Shen, Xianqiang Huang, Rutao Liu   +3 more
doaj   +1 more source

2,8-Dimesitylboranyl-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine

Acta Crystallographica Section E, 2012
In the title compound, C51H56B2N2, a substituted Tröger's base, the dihedral angle between the two benzene rings constituting the Tröger's base framework is 104.42 (6)°.
Chun-Xue Yuan
doaj   +1 more source

Synthesis and crystal structure of tetramethyl (E)-4,4′-(ethene-1,2-diyl)bis(5-nitrobenzene-1,2-dicarboxylate)

Acta Crystallographica Section E: Crystallographic Communications
The title compound, C22H18N2O12, was obtained as a by-product during the planned synthesis of 1,2-bis(2-nitro-4,5-dimethyl phthalate)ethane by oxidative dimerization starting from dimethyl-4-methyl-5-nitro phthalate.
Artjom Businski, Thuy C. Ta, Niklas Gindullis, Christian Näther, Rainer Herges   +4 more
doaj   +1 more source