Preparation of Oligodiazo Compounds by Using the Suzuki Coupling Reaction and Characterization of Their Photoproducts
作者:Tetsuji Itoh、Katsuyuki Hirai、Hideo Tomioka
DOI:10.1021/ja038450p
日期:2004.2.1
conditions and underwent mono-, di-, and trisubstitution with benzene mono-, di-, and triboronic acids to afford benzene derivatives having one, two, and three diazo units, respectively. The products from irradiation of those diazo compounds were characterized by ESR and SQUID measurements, which revealed that triplet, quintet, and septet ground states were formed from mono-, bis-, and tris(diazo) compounds
[9-[10-(4-叔丁基-2,6-二甲基)苯基]蒽基](4-溴-2,6-二甲基苯基)重氮甲烷被发现足够稳定,可以在 Suzuki 偶联条件下存活并经历单-、二-和三取代苯单-、二-和三硼酸,分别得到具有一个、两个和三个重氮单元的苯衍生物。这些重氮化合物的辐照产物通过 ESR 和 SQUID 测量进行表征,这表明三重、五重和七重基态分别由单、双和三(重氮)化合物形成。这些高自旋物质的稳定性是通过依赖于温度的 ESR 和 UV/vis 测量以及激光闪光光解来估计的,这表明所有三种物质在高达 160 K 时都是稳定的,并且具有几秒钟的半衰期。室温下的溶液。