、
1-bromo-4-chloro-2-fluoro-5-(4-fluoro-2-methoxyphenoxy)benzene 、
草酸二乙酯 以whereby ethyl 2-[4-chloro-2-fluoro-5-(4-fluoro-2-methoxyphenoxy)phenyl]-2-oxoacetate was obtained with a yield of 44%的产率得到ethyl 2-[4-chloro-2-fluoro-5-(4-fluoro-2-methoxyphenoxy)phenyl]-2-oxoacetate