5-chloro-6-(2-fluoro-2-methylpropoxy)pyridin-3-ol 、
N-[(dimethylamino)sulfonyl]-2,4,5-triifluorobenzamide 在
crude residue 、 4-[(5-chloro-6-(2-fluoro-2-methylpropoxy)pyridin-3-yl)oxy]-N-[(dimethylamino)sulfonyl]-2,5-difluorobenzamide diethylamine salt 作用下,
生成 4-[(5-chloro-6-(2-fluoro-2-methylpropoxy)pyridin-3-yl)oxy]-N-[(dimethylamino)sulfonyl]-2,5-difluorobenzamide diethylamine salt