反应详情

A mixture of 50.0 g (0.406 mol) of bis(2-cyanoethyl)amine, 51.45 g (0.406 mol) of benzyl chloride, 1.0 g (6.7 mmol) of sodium iodide, 22.05 g (0.208 mol) of sodium carbonate and 150 mL of acetonitrile was stirred mechanically and heated at reflux under nitrogen for 5 h. The cooled reaction mixture was filtered and the solids were washed with acetonitrile (3×50 mL). The combined filtrates were concentrated by rotary evaporation. A solution of the residue in 100 mL of CH2Cl2 was washed with saturated aqueous Na2S2O3 (2×20 mL) and saturated aqueous NaCl (2×50 mL). The combined aqueous layers were extracted with CH2Cl2 (3×30 mL). The combined CH2CO2 solutions were dried over MgSO4, filtered and concentrated by rotary evaporation. The residual solvent was removed under vacuum (0.5 mm), yielding 70.4 g (89%) of product as a light yellow oil. 1H NMR (CDCl3/TMS) δ 7.34 (m, 5 H), 3.70 (s, 2 H), 2.88 (t, J=6.8 Hz, 4 H), 2.44 (t, J=6.8 Hz, 4 H). 13C NMR (CDCl3) δ137.5, 128.3, 127.4, 118.4, 57.7, 49.1, 16.4. IR (film, cm−1) 3070 (w), 3050 (m), 3020 (s), 2930 (s), 2830 (s), 2240 (s), 1595 (m), 1575 (w), 1485 (s), 1445 (s), 1415 (s), 1360 (br), 1250 (br), :1125 (s), 1070 (s), 1020 (s), 960 (s), 730 (s), 690 (s).

1. temperatureheated
2. temperatureat reflux under nitrogen for 5 h
3. customThe cooled reaction mixture
4. filtrationwas filtered
5. washthe solids were washed with acetonitrile (3×50 mL)
6. concentrationThe combined filtrates were concentrated by rotary evaporation
7. washA solution of the residue in 100 mL of CH2Cl2 was washed with saturated aqueous Na2S2O3 (2×20 mL) and saturated aqueous NaCl (2×50 mL)
8. extractionThe combined aqueous layers were extracted with CH2Cl2 (3×30 mL)
9. dry with materialThe combined CH2CO2 solutions were dried over MgSO4
10. filtrationfiltered
11. concentrationconcentrated by rotary evaporation
12. customThe residual solvent was removed under vacuum (0.5 mm)