、
1-bromo-4-chloro-5-(4-chloro-2-methoxyphenoxy)-2-fluorobenzene 、
草酸二乙酯 以whereby ethyl 2-[4-chloro-5-(4-chloro-2-methoxyphenoxy)-2-fluorophenyl]-2-oxoacetate was obtained with a yield of 60%的产率得到ethyl 2-[4-chloro-5-(4-chloro-2-methoxyphenoxy)-2-fluorophenyl]-2-oxoacetate