SCHEDULED MAINTENANCE
A variety of thermally stable 4-(N,N-diarylamino)-4′-nitroazobenzene dyes can be produced by direct copper-mediated C–N bond formation on preformed amino substituted azo dyes, thus avoiding a troublesome azo coupling step; the products are useful chromophores for high temperature nonlinear optical applications.
R. D. Miller, V. Y. Lee and R. J. Twieg, J. Chem. Soc., Chem. Commun., 1995, 245 DOI: 10.1039/C39950000245
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