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The synthesis of the novel phthalonitrile containing (2,4,5‐trimethylphenyl)ethynyl moieties was performed using the palladium‐catalyzed Sonogashira crosslinking methodology. Cobalt phthalocyanine was obtained with the cyclotetramerization reaction of this dinitrile derivative, while the synthesis of zinc and manganese phthalocyanines was reported by the Sonogashira coupling reaction of the appropriate...
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