Propylamine → N-(2-(2,4,6-Trichlorophenoxy)ethyl)-1-propanamine

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Into a 1-liter glass reactor, which could withstand a pressure of 6 atmospheres, fitted with a stirrer, heating mantle and a pressure gauge, were added 270.8 g 2-(2,4,6-trichlorophenoxy) ethyl chloride and 350 g n-propyl amine. The mixture was slowly heated with stirring over a period of 8 hours at a temperature of 90° C. The initial pressure under these conditions was 3 atmospheres, which dropped during the reaction to about 2.2 atmospheres. The end of the reaction was determined by GLC. At the end of the reaction the mixture was cooled to 55° C., whereupon the pressure dropped to atmospheric. The excess n-propyl amine was distilled off and it could be recycled for use in a subsequent batch, until a bottom temperature of 85° C. was reached. At the end of the distillation the mixture was cooled to 40° C., 300 ml of a 20% hydrogen chloride solution and 1 g of an emulgator GAF RM-510 were added. The temperature rose to 70° C., the mixture was stirred for one hour at this temperature and the product precipitated as white crystals of the amine hydrochloride salt. The slurry is cooled to 40° C., filtered, re-slurried in 250 ml xylene and filtered again. This affords 312 g of white hydrochloride salt of N-n-propyl-N-2-(2,4,6-trichlorophenoxy)-ethyl amine in 93% yield and purity of 96%-98%.

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