Author:

Keywords:

Science & Technology, Physical Sciences, Chemistry, Organic, Chemistry, DYES, 4,4-DIFLUORO-4-BORA-3A, DERIVATIVES, CHEMISTRY, 03 Chemical Sciences, Organic Chemistry, 34 Chemical sciences

Abstract:

8-Halogenated boradiaza-s-indacenes can be efficiently prepared from dipyrrylketones. The new dyes react smoothly with nucleophiles to yield N-, O-, and S-substituted chromophores, as well as transition-metal-catalyzed cross-coupling reactions. The nature of the new substitutent has a strong influence on the spectral properties of the dyes.