New chromogens of the ferroin-type--II. Pyrido and pyridyl derivatives of phenazine and quinoxaline.
Eleven pyrido and pyridyl derivatives of phenazine (6) and quinoxaline (5) have been examined as chromogens of the ferroin type for iron(II) and copper(I). Three of the quinoxaline derivatives show promise as reagents for iron(II) but are expensive and difficult to prepare.
Schilt
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Department of Chemistry, Northern Illinois University, DeKalb, Illinois 60115, U.S.A.
Hoyle
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