Cl.Cl.[CH3:3][O:4][CH2:5][CH2:6][N:7]1[CH2:12][CH2:11][NH:10][CH2:9][CH2:8]1>[OH-].[Na+]>[CH3:3][O:4][CH2:5][CH2:6][N:7]1[CH2:12][CH2:11][NH:10][CH2:9][CH2:8]1To an aqueous solution of 68.8 g of 1-(2-methoxyethyl)piperazine dihydrochloride (water; 50 mL) was added dropwise an aqueous solution of 33.0 g of sodium hydroxide (water; 100 mL). The mixture was extracted with chloroform. The, organic layer was dried over anhydrous magnesium sulfate and evaporated to give 41.3 g of the title compound.
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