Perthienyl analogues of chichibabin's hydrocarbon. A new stable, highly amphoteric multistage redox system with low oxidation potentials.
摘要:
Perthienyl analogues of Chichibabin's hydrocarbon have been first synthesized as fairly stable substances, showing highly amphoteric multistage redox properties with considerably low oxidation potentials.
The synthesis and characterization of precursors for polyarene- and hetarenemethylenes (PAM) of structure 3, which are predicted to be low band gap polymers are described. The precursor molecules 4 are synthesized from the corresponding 2-thiophene- and 2-pyrrole- carbaldehydes 6a and 6b by Knoevenagel condensation with 2,5-dibydrothiophene 1-oxide (9) and / or the analogous benzo- and naphtho-annulated sulfoxides 9. The sulfoxide groups in 9 are easily reduced with formation of the sulfides 11. The synthesis of the precursor molecules 20-22 containing two directly linked quinoid structures is also described. To increase the solubility of the 1,3-bis(2-thienylmethylene)-1,3-dihydroisothianaphthene systems 4 e.g. alkoxy substituents are introduced into the annulated benzene ring of 4.
Perthienyl analogues of chichibabin's hydrocarbon. A new stable, highly amphoteric multistage redox system with low oxidation potentials.
作者:Takeshi Kawase、Nobuhiko Ueno、Masaji Oda
DOI:10.1016/s0040-4039(00)79106-4
日期:1992.9
Perthienyl analogues of Chichibabin's hydrocarbon have been first synthesized as fairly stable substances, showing highly amphoteric multistage redox properties with considerably low oxidation potentials.