35804-44-5
4-bromo-pent-4-enoic acid ethyl ester
→
~78%
14594-25-3
Ethyl 5-bromo-4-oxopentanoate
539-88-8
乙酰丙酸乙酯
~40%
14794-31-1
丁二酸单乙酯酰氯
+
18107-18-1
三甲基硅烷化重氮甲烷
~10%
1968-40-7
4-戊烯酸乙酯
61844-36-8
1-diazonio-5-ethoxy-5-oxopent-1-en-2-olate