A series of novel aza-diisoindolmethine dyes 9 with six different aryl and heteroaryl groups at the indole moiety have been synthesized by the addition of aryl Grignard compounds to phthalodinitrile and subsequent reaction with formamide. A plausible reaction mechanism, through a Leuckart–Wallach-type reduction has been confirmed by means of DFT calculations of the related transition and intermediate states. The corresponding boron difluoride complexes (10) o...Expand abstract
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Synthesis and characterization of near-infrared absorbing benzannulated aza-BODIPY dyes.
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