Method for preparing 2-amido-4,6-dichlorophenol

The invention relates to a method for preparing 2-amido-4,6-dichlorophenol. The method comprises the following steps of: adding a Ni-B/SiO2 amorphous catalyst, 2,4-dichloro-6-nitrophenol and a polar solvent into an autoclave in turn; replacing air by using nitrogen and hydrogen in turn; introducing H2 until the pressure is between 0.5 and 1.0Mpa; heating the autoclave in a water bath to 333-353K;starting stirring, adjusting the stirring rotating speed more than or equal to 500r/min, continuously reacting for 10min when the pressure does not change; and extracting solution in the autoclave, filtering out the catalyst, and drying the product in vacuum after the filtrate is decompressed and distilled. The method for preparing the 2-amido-4,6-dichlorophenol by adopting the Ni-B/SiO2 amorphous catalyst requires small hydrogen pressure and less equipment investment, and the solvent and the catalyst can be recycled, so that the continuously pollution-free production for preparing the 2-amido-4,6-dichlorophenol is realized.