[CH3:1][O:2][CH2:3][C:4](O)=O.[CH2:7]([NH2:11])[CH:8]([NH2:10])[CH3:9]>C1(C)C=CC=CC=1>[CH3:1][O:2][CH2:3][C:4]1[NH:11][CH2:7][CH:8]([CH3:9])[N:10]=1Into a 500-mL round-bottom flask, was placed a solution of 2-methoxyacetic acid (20 g, 222.0 mmol) in toluene (200 mL). Propane-1,2-diamine (50 g, 674.5 mmol) was added to the reaction. The reaction mixture was stirred overnight at 130° C., then concentrated under reduced pressure. This resulted in 25 g (crude) of the title compound as a yellow oil.
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