Model studies towards liquid crystalline dendrimers with mesogenic repeat units throughout the structure

Columnar propeller-like 1,3,5-triphenylbenzenes: the missing link of shape-persistent hekates

“…[4][5][6][7][8][9][10][11] Therefore, these compounds allow a detailed view into the interplay between the molecular structure and modes of the self-assembly. While star-shaped tris-styrylbenzene 1 [12][13][14][15][16][17][18][19][20] and the corresponding tris-styryltriazine 2 [21][22][23] as well as 1,3,5-triphenyltriazine 3 have been extensively studied, [24][25][26][27][28][29][30][31][32][33][34] the parent 1,3,5-triphenylbenzenes 5 and 7 are much less explored 24,[35][36][37] (Scheme 1).…”

The Effects of Cyclic Conjugation and Bending on the Optoelectronic Properties of Paraphenylenes

“…Notably, this synthesis can readily produce tens of grams of 6 from commercially available quionone monoketal using standard 2-L glassware. Synthesis of alkyl tethered coupling partners 9 and 10 began with dibromides 7 and 8 and is achieved in 90% and 99% yield, respectively, through simple lithium halogen exchange and subsequent quench with isopropoxyboronic acid pinacol ester (Scheme ).…”

Short-Step Synthesis of a Resveratrol Derivative from Commercially Available 1,3-Dimethoxybenzene and 4-Vinylanisole

“…We attempted to synthesize 2 by using the Sandmyer reaction from 3,5-dimethoxyaniline with CuBr and HBr, 11) (deacetoxyiodo)benzene-mediated oxidative nuclear halogenation of arene developed by Karade et al,12) and 3,5-dimethoxylation of 1,3,5-tribromobenzene by using NaOMe. 13) However, in all cases, our achieved yield of 2 was very poor.…”