Method for preparing o-aminophenyl ether

The invention discloses a preparation method of o-aminophenyl ether, which comprises the following steps: (a) adding o-chloronitrobenzene, alkali, a catalyst and alcohol into a reaction kettle according to a certain sequence at a certain temperature, reacting for a certain time, and filtering out generated salt to obtain an alcoholic solution of o-nitrophenyl ether; and (b) pumping the o-nitrophenyl ether solution obtained in the step (a) and hydrogen into continuous hydrogenation equipment loaded with a catalyst at a certain temperature, a certain pressure and a certain flow rate, carrying out catalytic hydrogenation, desolventizing, and carrying out reduced pressure distillation to obtain the o-aminophenyl ether product. The problems of instability, high o-nitrophenol generation amount, difficulty in control of azo side reaction, low product yield, large wastewater amount and high risk of kettle type hydrogenation reaction in the traditional process are solved. The o-aminophenyl ether prepared by the method