申请人:Kirner Hans Jürg
公开号:US08436208B2
公开(公告)日:2013-05-07
A process for the preparation of a substituted 2,2′-dithiophene is described, which process comprises the steps (a), (c) and optional steps (b) and (d): a reaction of a compound of the formula: with a suitable lithium organic compound, preferably Li-alkyl or Li-alkylamide; b) optional exchange of lithium against another metal selected from Mg1 Zn and Cu; c) reaction of the metallated intermediate obtained in step (a) or (b) with a suitable electrophil, which is CO2 or an aldehyde (addition reaction), or a compound Y′—R17 or Y′—R18-Z (substitution reaction), where R17 and R18 are as defined in claim 1; and optionally d) modification of the product obtained in step (c), e.g. by introducing one or more conjugating moieties Y ring closure between suitable monovalent residues R17, exchange or extension of functional groups or substituents such as addition to carbonyl or substitution of carbonyl in R17 or R18. The products, including or corresponding polymers, are excellent conducting materials
描述了一种制备取代2,2'-二硫代苯的方法,该方法包括步骤(a)、(c)和可选步骤(b)和(d):a)将具有以下结构式的化合物与适当的有机锂化合物发生反应,优选为Li-烷基或Li-烷基胺;b)可选地将锂与从Mg1、Zn和Cu中选择的另一金属进行交换;c)将在步骤(a)或(b)中获得的金属化中间体与适当的亲电试剂发生反应,该亲电试剂为CO2或醛(加成反应),或化合物Y'-R17或Y'-R18-Z(取代反应),其中R17和R18如权利要求1所定义;并可选地d)修改在步骤(c)中获得的产物,例如通过引入一个或多个共轭基团Y环闭合在适当的一价残基R17之间,交换或延伸功能基团或取代基团,例如在R17或R18中的羰基加成或羰基取代。所得产物,包括或对应的聚合物,是优秀的导电材料