The Vilsmeir formylation of 6 dialkylferrocenes has been found to produce nearly exclusively β isomers.The effect of temperature and the substrates etc.on the reaction was investigated.The structures of these compounds were characterized by elementary analysis、IR and 1HNMR.
Ten ferrocenylformyl 1,1′ dialkylferrocenes were sythesized by Friedel Crafts acylation of 1,1′ dialkylferrocenes and the respective isomers were isolated by column chromatography. The relations between the properties of the compounds to their structures and α /β isomer ratios have been studied by elemental analysis, IR and 1H NMR.
合成了两类长链烷基二茂铁取代的卟啉及其金属锌卟啉,其中一类二茂铁通过酰胺键与卟啉相连,长链在外围(卟啉5与锌卟啉6);另一类二茂铁通过长链与卟啉相连(卟啉7与锌卟啉8).研究了两类卟啉及其金属锌卟啉的光谱与电化学性质.两类卟啉配体的吸收位置几乎相同,与卟啉配体相比,两类金属锌卟啉的最大吸收均收发生了7 nm的红移.荧光光谱中,酰胺键桥连的卟啉5与锌卟啉6的荧光猝灭程度相对增大,量子产率降低.电化学研究表明,当卟啉配体与金属锌离子配位后,卟啉环及二茂铁的氧化还原半波电位均发生负移.此外,将连接二茂铁与卟啉的酰胺键换成长链烷基后,卟啉配体及配合物的第一氧化电势略有降低(13~18 m V),而二茂铁的第一氧化电势却降低182~194m V左右.