186581-53-3
重氮甲烷
+
14794-31-1
丁二酸单乙酯酰氯
→
~82%
61844-36-8
1-diazonio-5-ethoxy-5-oxopent-1-en-2-olate
14594-24-2
ethyl 5-chloro-4-oxopentanoate
14594-25-3
Ethyl 5-bromo-4-oxopentanoate
818-38-2
戊二酸二乙酯
105886-77-9
ethyl 4-oxo-5-(2-pyrrolyl)-pentanoate
123-25-1
丁二酸二乙酯