Aryl heteroaryl - and 2,3-Diaryl diheteroaryl quinoxalines

The compounds discussed in this chapter include some of the most readily prepared quinoxaline derivatives it was thought logical to group together both aryl and heteroarylquinoxalines because of their similar modes of preparation and properties. 

The mass spectrum of 2,3-diphenylquinoxaline shows M , and ions and, in addition, ions resulting from the cleavage of a hydrogen radical from these species.  

2-Phenylquinoxaline undergoes amination at position 4 when treated with O-mesitylenesulfonylhydroxylamine. The product 2 is converted into the N-benzoylimino derivative 3 on reaction with benzoyl chloride.Treatment of 2 with base and an acetylenic ester results in 

Cobalt(II), nickel(II), iron(II), and copper(II) halide complexes of 2,3-di-(2-pyridyl)quinoxaline and related compounds have been described.  

Diarylquinoxalines have been prepared in the search for antimalarial and antifertility agents. They have been incorporated into light-sensitive copying compositions, and 2,3-diphenylquinoxaline has been used as a photosensitizer for the decarboxylation of carboxylic acids. Various phenylated quinoxaline polymers have been prepared, and polymers have also been obtained from 6-acryloylamino-2,3-diphenylquinoxaline 

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Table 1. 2-Aryl(heteroaryl)- and 2,3-Diaryl(diheteroaryl)quinoxalines. . . 237...

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