75-04-7
乙胺
+
72126-54-6
5-chloro-6-methylpyrazine-2,3-dicarbonitrile
→
~78%
72112-35-7
5-(ethylamino)-6-methylpyrazine-2,3-dicarbonitrile
57005-61-5
5-甲基-6-氧代-1,6-二氢吡嗪-2,3-二甲腈