Ester-functionalized phthalonitriles and zinc phthalocyanines via palladium-catalyzed cyanation of 4,5-dichlorophthalates
作者： Benoît Tylleman , Rafael Gómez-Aspe , Gabin Gbabode , Yves Henry Geerts , Sergey Sergeyev
DOI: 10.1016/J.TET.2008.03.004
关键词: Organic chemistry 、 Rare case 、 Mesogen 、 Chemistry 、 Zinc phthalocyanine 、 Cyanation 、 Palladium 、 Zinc 、 Catalysis 、 Alkyl 、 Polymer chemistry
摘要: Abstract Dicyanophthalates 3 were synthesized via Pd-catalyzed two-fold cyanation of the corresponding 4,5-dichlorophthalates with Zn(CN) 2 . Appropriate modification reaction conditions allowed one-pot synthesis zinc phthalocyanines 7 bearing eight peripheral alkyl ester groups. Powder X-ray diffraction study a mesogenic phthalocyanine branched substituents revealed rare case transition between two columnar rectangular liquid crystalline mesophases different symmetry.
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