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Synthesis and characterization of light-fluorous NHC-ligands and their palladium complexes
Journal of Organometallic Chemistry ( IF 2.1 ) Pub Date : 2020-11-28 , DOI: 10.1016/j.jorganchem.2020.121634
Angel S.W. Lo , Ken S.M. Yiu , István T. Horváth

Light-fluorous ponytails containing perfluoro-n-propyl, perfluoro-n-butyl and perfluoro-t-butoxy groups were used to synthesize light-fluorous α-olefins, branched dialkyl iodides, alkyl triflates, alkyl imidazoles, and dialkyl imidazolium salts. The latter were used to prepare two light-fluorous N,N’-dialkyl-imidazole-2-ylidene diiodo palladium(II) complexes. The fluorous partition coefficients of the light-fluorous olefins, iodides, and triflates were measured in perfluoro(methylcyclohexane)/toluene biphasic system, which revealed that the shorter and environmentally friendlier perfluoroalkyl chains of the light-fluorous ponytails results in lower fluorous partition coefficients, especially as the number of methylene groups increases.



中文翻译:

轻氟NHC配体及其钯配合物的合成与表征

含有全氟丙基,全氟丁基和全氟丁氧基的轻氟马尾辫被用来合成轻氟α-烯烃,支链二烷基碘化物,烷基三氟甲磺酸酯,烷基咪唑和二烷基咪唑鎓盐。后者用于制备两种轻氟的N,N′-二烷基-咪唑-2-亚烷基二碘钯(II)配合物。在全氟(甲基环己烷)/甲苯两相体系中测量了轻氟烯烃,碘化物和三氟甲磺酸酯的氟分配系数,这表明,轻氟马尾辫较短且对环境更友好的全氟烷基链导致较低的氟分配系数,特别是随着亚甲基数目的增加。

更新日期:2020-12-04
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