186581-53-3
重氮甲烷
+
36239-09-5
氯甲酰乙酸乙酯
→
~88%
52526-30-4
1-diazonio-4-ethoxy-4-oxobut-1-en-2-olate
35594-15-1
ethyl 4-acetyloxy-3-oxobutanoate