7664-93-9
硫酸
+
21586-21-0
2-methylpentane-2,4-diamine
67-64-1
丙酮
→
53422-22-3
2,2,4,4,6-五甲基-六氢嘧啶
556-72-9
2,2,4,6,6-pentamethyl-1,5-dihydropyrimidine