27143-09-5
[(4-氯苯基)肼基]氯乙酸乙酯
+
109-77-3
丙二腈
→
~89%
908584-68-9
5-氨基-1-(4-氯苯基)-4-氰基吡唑-3-羧酸乙酯
908584-60-1
1073-69-4
4-氯苯肼
~85%