609-14-3
2-甲基乙酰乙酸乙酯
→
~58%
76062-29-8
ethyl 2-azido-2-methyl-3-oxobutanoate
32116-05-5
ethyl 2-bromo-2-methyl-3-oxobutanoate
~49%
431-03-8
2,3-丁二酮