Quinoxaline

A quinoxaline, also called a benzopyrazine, in organic chemistry, is a heterocyclic compound containing a ring complex made up of a benzene ring and a pyrazine ring. They are isomeric with quinazolines.

Additional recommended knowledge

Recognize and detect the effects of electrostatic charges on your balance

Don't let static charges disrupt your weighing accuracy

Essential Laboratory Skills Guide

Quinoxalines are used as dyes, pharmaceuticals and antibiotics such as Echinomycin, Levomycin and Actinoleutin.

They are formed by the condensing ortho-diamines with 1,2-diketone; the parent substance of the group, quinoxaline, resulting when glyoxal is so condensed, whilst substitution derivatives arise when α-ketonic acids, α-chlorketones, α-aldehyde alcohols and α-ketone alcohols are used in place of diketones.

One study used 2-Iodoxybenzoic acid (IBX) as a catalyst in the reaction of benzil with o-phenylenediamine ^[1]:

References

This article incorporates text from the Encyclopædia Britannica Eleventh Edition, a publication now in the public domain.