用 CO2 对现成的有机卤化物进行羧化反应是一种获得有价值的羧酸的实用策略。然而,廉价未活化烷基氯的高效羧化仍未开发。在此,我们报道了 C Cl 键在未活化的氯化物和聚氯乙烯中与 CO2 的电还原羧化反应。在温和条件下以中等至良好的收率获得各种烷基羧酸,具有高化学选择性。重要的是,这种电还原羧化的效用在聚氯乙烯 (PVC) 升级中被证明具有巨大潜力,它可以将废弃的 PVC 从疏水性功能性产品转化为亲水性功能性产品。机理实验支持未活化氯化物的连续单电子还原以生成烷基阴离子,并在亲核攻击 CO2 后得到所需的产物。
[EN] PIPERIDYL-IMIDAZOLE DERIVATIVES, THEIR PREPARATIONS AND THERAPEUTIC USES<br/>[FR] DERIVES DE PIPERIDYLE-IMIDAZOLE, PREPARATIONS DANS LESQUELLES ILS ENTRENT ET UTILISATIONS THERAPEUTIQUES DE CES DERNIERES
申请人:NOVO NORDISK AS
公开号:WO2000064884A1
公开(公告)日:2000-11-02
Piperidyl-imidazole derivatives pharmaceutical compositions comprising them and use thereof in the treatment and/or prevention of diseases and disorders related to the histamine H3 receptor. More particularly, the compounds are useful for the treatment and/or prevention of diseases and disorders, in which an interaction with the histamine H3 receptor is beneficial.