N-乙基甲基胺 、
5-氯吡嗪-2-羧酸 在
5-chloro-N-ethyl-N-methylpyrazine-2-carboxamide 、
5-chloro-N,N-dimethylpyrazine-2-carboxamide 作用下,
以to afford the title compound 5-chloro-N-ethyl-N-methylpyrazine-2-carboxamide (SM-4: 2.05 g, 81%) as a clear oil的产率得到5-chloro-N-ethyl-N-methylpyrazine-2-carboxamide