Synthesis and Spectroscopic Properties of 4a,14a-Diazoniaanthra[1,2-<i>a</i>]anthracene and 13a,16a-Diazoniahexaphene Derived from 1,7-Dimethylnaphthalene
作者:Heiko Ihmels、Anton Granzhan、Jan Bats
DOI:10.1055/s-2006-926444
日期:2006.5
An improved preparation of 1,7-dimethylnaphthalene is presented, which is used as a precursor for the synthesis ofdiazoniahexacyclic salts, namely, 4a,14a-diazoniaanthra[1,2-a]anthracene (3) and 13a,16a-diazoniahexaphene (7). The influence of the reaction conditions on the formation of these isomers was investigated. Notably, the selectivity of the reactions depends significantly on the acid employed
介绍了一种改进的 1,7-二甲基萘制备方法,该方法用作合成重氮六环盐的前体,即 4a,14a-重氮蒽[1,2-a]蒽 (3) 和 13a,16a-重氮六苯 (7) )。研究了反应条件对这些异构体形成的影响。值得注意的是,反应的选择性很大程度上取决于环化步骤中使用的酸。两种化合物都表现出相似的吸收和荧光发射特性。化合物 3 在固态和空气饱和水溶液中表现出显着的光持久性。然而,重氮六苯 7 在溶液中会发生快速光降解。X射线衍射分析表明,化合物3在结晶状态下采用螺烯结构。