Photochemically assisted synthesis of phenacenes fluorinated at the terminal benzene rings and their electronic spectra

• Yuuki Ishii,
• Minoru Yamaji,
• Fumito Tani,
• Kenta Goto,
• Yoshihiro Kubozono and
• Hideki Okamoto

Beilstein J. Org. Chem. 2025, 21, 670–679, doi:10.3762/bjoc.21.53

• ]. Also, the effects of fluorination on the chiroptical features of [n]helicenes were theoretically predicted [41]. In addition to the manipulation of electronic natures, partial fluorination of PAHs has been recognized to be significant for crystal design and engineering. Thus, molecular packing patterns

Controlled oligomerization of [1.1.1]propellane through radical polarity matching: selective synthesis of SF₅- and CF₃SF₄-containing [2]staffanes

• Jón Atiba Buldt,
• Wang-Yeuk Kong,
• Yannick Kraemer,
• Masiel M. Belsuzarri,
• Ansh Hiten Patel,
• James C. Fettinger,
• Dean J. Tantillo and
• Cody Ross Pitts

Beilstein J. Org. Chem. 2024, 20, 3134–3143, doi:10.3762/bjoc.20.259

• nanotechnology [5], liquid crystal design [6][7][8][9][10], and the study of energy-transfer [11][12] or electron-transfer [13][14][15][16][17] processes. We also posit that lower-order [n]staffanes (i.e., n = 2 or 3) are potentially valuable C(sp3)-rich bioisosteres [18][19] that have been seemingly overlooked

• [81]. This unexpected observation suggests that CF3SF4-containing [2]staffanes, in particular, warrant additional studies and may be of interest, e.g., in liquid crystal design. Conclusion Suppressing [n]staffane formation beyond n = 1 in radical chain reactions involving [1.1.1]propellane (1) tends

Synthesis of organic liquid crystals containing selectively fluorinated cyclopropanes

• Zeguo Fang,
• Nawaf Al-Maharik,
• Peer Kirsch,
• Matthias Bremer,
• Alexandra M. Z. Slawin and
• David O’Hagan

Beilstein J. Org. Chem. 2020, 16, 674–680, doi:10.3762/bjoc.16.65

• compromised by conformational flexibility. Although none of the compounds prepared here met all of the criteria for commercial development, the study gives an insight into the potential for this novel difluorocyclopropane motif in liquid crystal design and development. Examples of liquid crystal candidates

The use of isoxazoline and isoxazole scaffolding in the design of novel thiourea and amide liquid-crystalline compounds

• Itamar L. Gonçalves,
• Rafaela R. da Rosa,
• Vera L. Eifler-Lima and
• Aloir A. Merlo

Beilstein J. Org. Chem. 2020, 16, 175–184, doi:10.3762/bjoc.16.20

• liquid crystal design [10][11]. N,N′-Bis(3,4,5-trialkoxylphenyl)ureas were identified as columnar liquid crystalline compounds presenting ferroelectric properties [12]. Another study reported cyclic disubstituted ureas with liquid crystalline ferroelectric and antiferroelectric phases [13]. Relating to

1,2,3,4-Tetrahydro-1,4,5,8-tetraazaanthracene revisited: properties and structural evidence of aromaticity loss

• Arnault Heynderickx,
• Sébastien Nénon,
• Olivier Siri,
• Vladimir Lokshin and
• Vladimir Khodorkovsky

Beilstein J. Org. Chem. 2019, 15, 2059–2068, doi:10.3762/bjoc.15.203

• atoms. This molecule can be easily modified at either ethylenediamino or ethylenediimino moiety and can thus serve as an attractive precursor for crystal design and creation of supramolecular assemblies. Of special interest is that the quinoxaline moiety of THTAA (3) and its derivatives are losing their

Crystal design using multipolar electrostatic interactions: A concept study for organic electronics

• Peer Kirsch,
• Qiong Tong and
• Harald Untenecker

Beilstein J. Org. Chem. 2013, 9, 2367–2373, doi:10.3762/bjoc.9.272

• isotropic charge transport compared to the “herring bone” stacking observed for other acenes. Keywords: aromatic stacking; charge carrier transport; crystal design; electrostatic control; organic semiconductor; organo-fluorine; Introduction Within a very few years the first organic semiconductors have