Synthesis of a BF2 complex of indol-2-yl-isoindol-1-ylidene-amine: a fully conjugated azadipyrromethene
Li, Yan; Dolphin, David; Patrick, Brian O
Starting from common available 3-methylindole and 1,3-diiminoisoindoline, the BF2 complex of indol-2-yl-isoindol-1-ylideneamine (I) was prepared in three steps. Its wavelength of max. visible absorption is similar to that of a tetraphenyl-conjugated azadipyrromethene BF2 complex (II).