1-(4-chloro-2-fluoro-5-hydroxyphenyl)-1,4-dihydro-4-(3-fluoropropyl)-5H-tetrazol-5-one 、
对氟硝基苯 、
potassium carbonate 在
1-[4-chloro-2-fluoro-5-(4-nitrophenoxy)phenyl]-1,4-dihydro-4-(3-fluoropropyl)-5H-tetrazol-5-one 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以to form 1-[4-chloro-2-fluoro-5-(4-nitrophenoxy)phenyl]-4-(3-fluoropropyl)-1,4-dihydro-5H-tetrazol-5-one (Compound A)的产率得到1-[4-chloro-2-fluoro-5-(4-nitrophenoxy)phenyl]-1,4-dihydro-4-(3-fluoropropyl)-5H-tetrazol-5-one