SCHEDULED MAINTENANCE
Novel cyclisations of 2-nitrodiphenylamines to phenazines and their N-oxides in both acidic and alkaline media are reported. The cyclisation to phenazines of 2,2′-dinitrodiphenylamines in alkaline redox conditions using hydrazine and activated metal is also described.
B. Cross, P. J. Williams and R. E. Woodall, J. Chem. Soc. C, 1971, 2085 DOI: 10.1039/J39710002085
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