α-amino ketones in excellent yields. While a similar reaction with aliphatic amines is applicable for the synthesis of substituted pyrazines, SnCl 2 ·2H 2 O permits versatility in the solvent-free reaction of α-hydroxy ketones with ammonium acetate to give the corresponding substituted pyrazines in good to excellent yields.
各种
苯胺与α-羟基酮在SnCl 2 ·2H 2 O 催化下的无溶剂反应以优异的产率提供了α-
氨基酮。虽然与脂肪胺的类似反应适用于合成取代的
吡嗪,但 SnCl 2 ·2H 2 O 在 α-羟基酮与
乙酸铵的无溶剂反应中具有多功能性,以良好到极好的产率得到相应的取代
吡嗪。