33884-41-2
3-乙氧亚甲基-2,4-戊二酮
+
27032-63-9
5-氯-2-肼基吡啶
→
~64%
210992-31-7
1-[1-(5-chloropyridin-2-yl)-5-methylpyrazol-4-yl]ethanone