Structural Characterization of a Benzoxazinophenoxazine Formed as a By‐Product During the Synthesis of a 3‐Amino‐N, N‐dimethylsalicylamide. (8th April 2013)

• Record Type: Journal Article
• Authors: Zhong, Wendy; Yang, Jiong; Hilton, Bruce D.; Feng, Wenqing; Martin, Gary E.; Yin, Jianguo; Muppalla, Kiran; Tong, Weidong; Fu, Xiaoyong
• Is Part Of: Journal of heterocyclic chemistry. Volume 50:Number 2(2013:Mar.)
• Page Start: 435
• Page End: 437
• Publication Date: 2013-04-08
• Subjects: Heterocyclic compounds -- Periodicals; 547.59
• DOI: 10.1002/jhet.1077
• Languages: English
• ISSNs: 0022-152X

Abstract

<abstract abstract-type="main" xml:lang="en" id="jhet1077-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p id="jhet1077-para-0001">Several highly colored by‐products were observed chromatographically during the synthesis of 3‐amino‐<italic>N, N</italic>‐dimethylsalicylamide. One of these, an oxidative dimerization products, bis‐(<italic>N, N</italic>‐dimethylcarboxamido)‐aminophenoxazinone, was previously isolated and characterized. A tris‐(<italic>N, N‐</italic>dimethylcarboxamido)‐benzoxazino[3, 2‐<italic>b</italic>]phenoxazine, presumably a higher oxidation or further reaction product of the previously isolated and characterized 2‐amino‐3<bold><italic>H</italic></bold>‐phenoxazin‐3‐one, has also been isolated and characterized by mass spectrometry and multinuclear NMR methods. We now wish to communicate the results of that structure characterization effort.</p> </abstract>