Preparation of symmetrical and unsymmetrical monomers towards bridge trifluoromethylated poly(p-phenylenevinylene)
作者:Alex J. Roche、Anne D. Loyle、Jean-Pierre Pinto
DOI:10.1016/j.jfluchem.2004.05.004
日期:2004.10
series of trifluoromethylated and bis(trifluoromethylated) precursors and monomers for bridge substituted trifluoromethylated poly(p-phenylenevinylene) (PPV) is reported. These monomers were prepared in several steps from terephthaldicarboxaldehyde and they contain symmetrical and unsymmetrical combinations of leaving groups and/or polarizers, including chlorides, sulfoxides, sulphones, tosylates and S-methyl
报告了一系列三氟甲基化和双(三氟甲基化)的前体和单体的制备和鉴定,用于桥取代的三氟甲基化的聚对苯撑亚乙烯基(PPV)。这些单体是由对苯二甲醛经几个步骤制得的,它们含有离去基团和/或偏振片的对称和不对称组合,包括氯化物,亚砜,砜,甲苯磺酸盐和S-甲基(以及O-乙基)黄原酸酯。三氟甲基的吸电子作用主导了取代的区域选择性,从而允许以高收率方便且选择性地形成不对称取代的产物。