One kind of n- [2- (2- hydroxyethoxy) -4-nitrophenyl] ethanolamine preparation

The present invention relates to an N-[2- (2- hydroxyethoxy) -4-nitrophenyl] ethanolamine production method, which is 2-amino-5-nitrophenol as starting material, 2-amino - 5-nitro-phenol mixture with a base and a solvent is added after hydroxyethylation agent, reacted to produce 2- (3-nitro-6-amino phenoxy) ethanol at a certain pressure and temperature; 2- (3-nitrophenyl -6-aminophenoxy) ethanol is then reacted with chlorine in the catalyst chloroformate, by condensation, hydrolysis to give N- [2- (2- hydroxyethoxy) -4-nitrophenyl] ethanolamine. The present invention has a high yield, high purity and good quality, gentle production process, produces less waste, etc; the present invention is not economic environment, and suitable for industrial production.