186581-53-3
重氮甲烷
+
52762-35-3
4-Chloro-4-oxobutyl acetate
→
13045-16-4
7-chloro-6-oxoheptanoate
26976-72-7
4-acetyloxybutanoic acid
71568-66-6
N-dimethylaminomethylene-nicotinamide