208264-11-3Relevant academic research and scientific papers
An Iterative Approach to Unsaturated and Partially Saturated [7]Helicenes
Freese, Tyll,Jones, Peter G.,Werz, Daniel B.
, p. 1367 - 1371 (2022/02/23)
We report a simple, iterative strategy for the synthesis of [7]helicenes starting from substituted 1,4-xylene building blocks. In the first step, we take advantage of the deprotonatable methyl groups to achieve ethano-bridged dimers. These are oxidatively coupled (without using metal-containing catalysts or light) using a hypervalent iodine reagent. Both steps are repeated to obtain the respective σ/π-helicenes. The degree of saturation can be controlled thermally during the oxidative coupling.
Synthesis of poly(quinoxaline-2,3-diyl)s with alkoxy side chains by aromatizing polymerization of 4,5-dialkoxy-substituted 1,2-diisocyanobenzenes
Nagata, Yuuya,Suginome, Michinori
experimental part, p. 4275 - 4282 (2012/07/13)
Poly(quinoxaline-2,3-diyl)s bearing alkoxy pendants was synthesized by living polymerization of 4,5-dialkoxy-3,6-dimethyl-1,2-diisocyanobenzenes, which were easily accessible from 3,6-dimethylcatechol, using organonickel complexes as initiators. Thermal p
