So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Kopecky, Kamil; Novakova, Veronika; Miletin, Miroslav; Zimcik, Petr researched the compound: 5,6-Dichloropyrazine-2,3-dicarbonitrile( cas:56413-95-7 ).Category: chiral-oxygen-ligands.They published the article 《Solid-Phase Synthesis of Aza-phthalocyanine-Oligonucleotide Conjugates and Their Evaluation As New Dark Quenchers of Fluorescence》 about this compound( cas:56413-95-7 ) in Bioconjugate Chemistry. Keywords: DNA fluorescence hybridization fluorescence quenching solid phase. We’ll tell you more about this compound (cas:56413-95-7).
Hydrophobic non-aggregating metal-free azaphthalocyanines (AzaPc) of the tetrapyrazinoporphyrazine type were synthesized, characterized, and used for oligonucleotide labeling. Both 3′-end and 5′-end labeling methods using solid phase synthesis suitable for automatic processes in the DNA/RNA synthesizer were developed. The hydrophobic character of AzaPc enabled the anchoring of the conjugates on reverse phase of the oligonucleotide purification cartridge, thus enabling their simple purification AzaPc did not show any fluorescence and extremely low singlet oxygen quantum yields (ΦΔ = 0.015-0.018 in DMF) in a monomeric state due to ultrafast intramol. charge transfer. That is why they were investigated as a new dark quencher structural type. They profit particularly from absorption in a wide range of wavelengths (300-740 nm) that covers all fluorophores used in hybridization assays nowadays. As an example, quenching efficiency was evaluated in a simple hybridization assay using monolabeled probes. AzaPc-based probes efficiently quenched both fluorescein and Cy5 fluorescence by both resonance energy transfer and contact quenching. The results were compared with three established dark quenchers, and the AzaPc exerted better (BHQ-1 and BHQ-2) or comparable (BBQ-650) quenching efficiencies for both fluorophores.
This literature about this compound(56413-95-7)Category: chiral-oxygen-ligandshas given us a lot of inspiration, and I hope that the research on this compound(5,6-Dichloropyrazine-2,3-dicarbonitrile) can be further advanced. Maybe we can get more compounds in a similar way.
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