Preparation of Conjugated Polyenes with Anthryl and N-Methylpyridinium Terminal Groups The synthesis of terminally donor-acceptor substituted polyenes from the respective aldehydes via Horner reactions is described. As donor group the 9-anthryl and as acceptor moiety the 4-(N-methyl)pyridinium residue were chosen. A bicyclo[2.2.2]octane unit was incorporated into the chain to interrupt the conjugation. The separation and characterization of the mixtures of Z/E- isomers obtained in the syntheses was possible.
制备具有
蒽基和 N-
甲基吡啶鎓末端基团的共轭多烯 描述了通过霍纳反应从相应的醛中合成末端供体-受体取代的多烯。作为供体基团,选择了 9-
蒽基,作为受体分子,选择了 4-(N-甲基)
吡啶残基。在链中加入了
双环[2.2.2]辛烷单元以中断共轭。合成过程中获得的 Z/E- 异构体混合物的分离和表征成为可能。