Preparative Fluorous Mixture Synthesis of Diazonium-Functionalized Oligo(phenylene vinylene)s
作者:Huahua Jian、James M. Tour
DOI:10.1021/jo048051s
日期:2005.4.1
were made to bear aryl diazonium functionalities that allow them to be used as surface grafting moieties in hybrid silicon/molecule assemblies. A library of OPV and hybrid oligomer tetramers was synthesized using fluorous mixture synthesis (FMS). The fluorous tags, which are secondary amines bearing different numbers of fluorine atoms, were synthesized and used as phase tags in mixture synthesis. The
制备了用于合成低聚(亚苯基亚乙烯基)(OPV)和杂化低聚物的一系列结构单元,并使用交替的Heck偶联和Horner-Wadswoth-Emmons(HWE)反应来偶联结构单元。进行模型研究以优化反应策略。使产物具有芳基重氮官能团,其允许它们用作杂化硅/分子组件中的表面接枝部分。使用氟化合物混合物合成(FMS)合成了OPV和杂合低聚物四聚体的文库。合成了氟标签,它们是带有不同数量氟原子的仲胺,并在混合物合成中用作相标签。标签和底物通过三氮烯键锚定在一起。通过分析型HPLC在荧光柱上监测混合物的合成,通过制备型HPLC分离最终的OPV和杂合的低聚物四聚体。在FMS结束时,在混合后,通过裂解三氮烯键并生成一系列芳基重氮化合物来对标签化的产品进行脱色。氟标签可以被回收和再利用。讨论了1-芳基-3,3-二烷基三氮烯的NMR谱。