Functionalized azo dyes by direct ullmann coupling
作者:R. D. Miller、V. Y. Lee、R. J. Twieg
DOI:10.1039/c39950000245
日期:——
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.