Caprolactam → HCID 86749896, 화합물

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[C:1]1(=[O:8])[NH:7][CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.C(N(CC)CC)C.Cl.[CH3:17][N:18]([CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][C:25](Cl)=[O:26])[CH3:19]>C1(C)C=CC=CC=1>[CH3:17][N:18]([CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][C:25]([CH:2]1[CH2:3][CH2:4][CH2:5][CH2:6][NH:7][C:1]1=[O:8])=[O:26])[CH3:19]

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온도: 101 °C

실험 절차

To a 1000 mL three-necked round-bottomed flask equipped with a reflux condenser, internal thermometer, argon inlet, and mechanical stirrer, are added ε-caprolactam (48.04 g, 0.42 mol), toluene (340 mL), and triethylamine (189.00 g, 1.87 mol). The mixture is heated to reflux (ca. 101° C.) for 15 min. While at that temperature, acid chloride 3 (100.00 g, 0.47 mol) is added as a solid over 30 min. The reaction is maintained at reflux for an additional 1.75 h before the heat is removed. At room temperature, the mixture is filtered and the salts washed with toluene. The dark filtrate is washed with saturated sodium bicarbonate solution (3×250 mL), water (100 mL), and dried over MgSO4. The mixture is filtered and concentrated by rotary evaporation at about 50° C. (water aspirator) and then by Kugelrohr distillation at 60° C. for 1 h to give 89.64 g (83%) of 4 as a dark red oil.