Nakamura, Akira; Ikeda, Osamu; Segawa, Hirozo; Takeuchi, Yasutomo; Takematsu, Tetsuo published an article about the compound: 5,6-Dichloropyrazine-2,3-dicarbonitrile( cas:56413-95-7,SMILESS:N#CC1=NC(Cl)=C(Cl)N=C1C#N ).HPLC of Formula: 56413-95-7. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:56413-95-7) through the article.
The herbicidal activities of 6-substituted 2,3-dicyano-5-chloropyrazines were evaluated and correlated with the previously reported substituent parameters π (hydrophobicity) and σp (Hansch, A., et al., 1973). Parameters π and π2 indicate that the hydrophobicity of the mol. is involved in the translocation of these compounds to the target site. The activity decreases with increasing electron-withdrawing property of the 6-substituent. The herbicidal activity varied parabolically with the change in π.
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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