108-24-7
乙酸酐
+
23590-61-6
5-chloro-7H-pyrido[2,3-d]pyridazin-8-one
→
~88%
81214-61-1
7-acetyl-5-chloropyrido[2,3-d]pyridazin-8-one
703-33-3
5,8-二氯吡啶并[3,2-d]哒嗪