反应详情

Diethyl 2-aminononanedioate (10.40 g) and oct-1-en-3-one (5.04 g) were mixed slowly at 0° C., with stirring, and set aside at room temperature for 3 h., giving diethyl 2-(3-oxoctylamino) nonanedioate as a colourless oil, 2.3(4H, multiplet, --CH2 --CO2Et and NCH2CH2CO--), 3.16(1H, triplet, EtO2C--CHR--N), 4.11(2H, quartet, --O--CH2 --CH3), 4.17(2H, quartet, --O--CH2 --CH3). A stirred solution of this ketone (13.5 g) in absolute ethanol (140 ml) was treated dropwise at 0° C. with sodium borohydride (665 ml) in absolute ethanol (70 ml), then kept for 31/2 h. at room temperature, and concentrated at 40° C. in vacuo. The residue dissolved in water, was brought to pH 5 with N hydrochloric acid and extracted throughly with chloroform, the extract was washed with water, dried, and evaporated, giving diethyl 2-(3-hydroxyoctylamino)nonanedioate as a colourless oil.

1. customgiving diethyl 2-(3-oxoctylamino) nonanedioate as a colourless oil, 2.3(4H
2. custom2 h.
3. customat room temperature
4. concentrationconcentrated at 40° C. in vacuo
5. dissolutionThe residue dissolved in water
6. extractionextracted throughly with chloroform
7. washthe extract was washed with water
8. customdried
9. customevaporated