Ethanolamine → 2-((2-(Diethylamino)ethyl)amino)ethanol

Temperature

120 °C

A mixture of 2-(diethylamino)ethylchloride hydrochloride (18 g, 0.11 mol) and 2-aminoethanol (19 mL, 0.32 mol) was stirred at 120° C. for 5 hours. After the reaction mixture was cooled to room temperature, a 1.0 mol/L aqueous solution of sodium hydroxide (40 mL) was added thereto, and the mixture was extracted with chloroform (100 mL×6). The organic layer was dried over anhydrous sodium sulfate and then concentrated under reduced pressure. The resulting residue was distilled to obtain N,N-diethyl-N′-(2-hydroxyethyl)ethylenediamine (7.6 g, 45%).

1. temperatureAfter the reaction mixture was cooled to room temperature
2. extractionthe mixture was extracted with chloroform (100 mL×6)
3. dry with materialThe organic layer was dried over anhydrous sodium sulfate
4. concentrationconcentrated under reduced pressure
5. distillationThe resulting residue was distilled

ORD record

ord-43233ded123e49c5b26ca88fd5e20d8d

Source dataset

uspto-grants-2009_05

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07538224B2