The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 5,6-Dichloropyrazine-2,3-dicarbonitrile, is researched, Molecular C6Cl2N4, CAS is 56413-95-7, about The synthesis, photochemical and photophysical properties of zinc aryloxy- and alkyloxyazaphthalocyanines, the main research direction is zinc azaphthalocyanine alkoxy aryloxy preparation fluorescence singlet oxygen yield.Safety of 5,6-Dichloropyrazine-2,3-dicarbonitrile.
Octasubstituted zinc tetrapyrazinoporphyrazines bearing butoxy, octyloxy, 2,6-diisopropylphenoxy and 4-(hydroxymethyl)phenoxy substituents were synthesized from the corresponding 5,6-disubstituted pyrazine-2,3-dicarbonitriles using Zn(quinoline)2Cl2 in yields varying from 14 to 44%. The reaction procedure proved to be efficient for the synthesis of both alkyloxy- and aryloxy- substituted zinc tetrapyrazinoporphyrazines and did not require strictly anhydrous conditions. Optimal cyclotetramerization conditions were identified for each derivative, in terms of reaction temperature, as overheating cleaved the ether bond leaving a vacant OH group on the macrocycle. The photochem. and photophys. properties of the synthesized compounds were investigated in pyridine. Singlet oxygen quantum yields (Φ Δ) ranged from 0.49 to 0.61 and high fluorescence quantum yields (Φ F) of ∼0.30 were observed for non-aggregated compounds
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Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate