Structural Characterization of a Benzoxazinophenoxazine Formed as a By-Product During the Synthesis of a 3-Amino-<i>N</i>,<i>N</i>-dimethylsalicylamide
作者:Wendy Zhong、Jiong Yang、Bruce D. Hilton、Wenqing Feng、Gary E. Martin、Jianguo Yin、Kiran Muppalla、Weidong Tong、Xiaoyong Fu
DOI:10.1002/jhet.1077
日期:2013.3
highly colored by‐products were observed chromatographically during the synthesis of 3‐amino‐N,N‐dimethylsalicylamide. One of these, an oxidative dimerization products, bis‐(N,N‐dimethylcarboxamido)‐aminophenoxazinone, was previously isolated and characterized. A tris‐(N,N‐dimethylcarboxamido)‐benzoxazino[3,2‐b]phenoxazine, presumably a higher oxidation or further reaction product of the previously
在3-氨基-N,N-二甲基水杨酰胺的合成过程中,通过色谱法观察到了几种高度着色的副产物。其中一种是氧化二聚产物,双-(N,N-二甲基甲酰胺基)-氨基苯恶嗪酮,以前已经过分离和鉴定。三(N,N-二甲基甲酰胺基)苯并恶嗪[3,2- b ]苯恶嗪,据推测是先前分离和表征的2-氨基-3 H-苯恶嗪-3-one的较高氧化度或进一步反应的产物。通过质谱和多核NMR方法进行分离和表征。现在,我们希望传达该结构表征工作的结果。