The substitution reaction of pyrazine-2,3-dicarbonitrile derivatives with ammonia, amines, water and alcohols
作者:Hideki Hirano、Rachel Lee、Masaru Tada
DOI:10.1002/jhet.5570190631
日期:1982.11
es 4 and 6 by the substitution reaction with amines but give only 3-aminopyrazine-2-carbonitrile derivative on the reaction with ammonia. The reaction of 5-arylpyrazine-2,3-dicarbonitriles (1 and 2) with alcohols in the presence of a base gives 2-alkoxypyrazine-3-carbonitrile derivatives 9 and 13 and 3-alkoxypyrazine-2-carbonitrile derivatives 10 and 14. The reaction of water gives two pyrazinonecarbonitrile