Bi-Directional Synthesis of a Series of 2,5-Dodecanoxy-phenyleneethynylene Oligomers
作者:Eduardo Arias-Marín、Norma González-Rojano、Dámaso Navarro-Rodríguez、Steffen Weidner
DOI:10.1055/s-2005-868474
日期:——
A family of rigid rod like 2,5-dodecanoxy-phenyleneethynylene oligomers having 3, 5, 7, and 9 repeating units was selectively synthesized by a bi-directional iterative divergent-convergent approach. Starting from a central 1,4-bis(dodecanoxy)-2,5-diiodobenzene monomer, only two repetitive reactions were involved with each cycle of oligomerization: a Pd/Cu cross-coupling with the bifunctional monomer 1-(3,3-diethyltriazene)-2,5-bis(dodecanoxy)-4-(ethynyl)benzene, generating oligomers with terminal triazene groups, followed by a further nucleophilic substitution with iodine.
一种具有3、5、7和9个重复单元的刚性棒状2,5-十二烷氧基苯乙炔聚合物家族,通过双向迭代分散-收敛方法选择性合成。以中心单体1,4-二(十二烷氧基)-2,5-二碘苯为起始材料,每个聚合周期中仅涉及两个重复反应:首先与双功能单体1-(3,3-二乙基三嗪)-2,5-二(十二烷氧基)-4-(炔基)苯进行钯/铜交叉偶联反应,生成带有末端三嗪基团的聚合物,然后进行进一步的碘亲核取代反应。