628-20-6
4-氯丁腈
+
105-36-2
溴代乙酸乙酯
→
~93%
25219-53-8
ethyl 2-pyrrolidin-2-ylideneacetate
~6%
7149-18-0
2-氨基-1-环戊烯甲酸乙酯