Name: 5,6-Dichloropyrazine-2,3-dicarbonitrile. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 5,6-Dichloropyrazine-2,3-dicarbonitrile, is researched, Molecular C6Cl2N4, CAS is 56413-95-7, about Syntheses of Octa(dialkylamino)azaphthalocyanines. Author is Morkved, Eva H.; Kjosen, Helge; Ossletten, Hege; Erchak, Nikolai.
Ni(II) octa(4-morpholinyl)- (11a) and Cu(II) octa(1-pyrrolidinyl)- (11b) azaphthalocyanines were prepared from the corresponding pyrazine diiminoimides (10). The precursor pyrazine dicarbonitriles (2) gave 6-cyanopyrazine-5-alkyl carboximidates (3-9) as stable intermediates when reacted with NH3 and catalytic amounts of Na alkoxide in alcs. 3-9 Were converted to the diiminoimides 10 upon reflux in PrOH or BuOH for several hours. This unusual reaction pattern was observed for pyrazine-2,3-dicarbonitriles (2) with morpholine, thiomorpholine, piperidine or pyrrolidine substituted in the 5- and 6-positions.
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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