Thionyl Chloride → N-(2-chloroethyl)-N-isopropylaniline
反応式
[CH:1]([N:4]([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[CH2:5][CH2:6]O)([CH3:3])[CH3:2].O=S(Cl)[Cl:16]>C(Cl)Cl>[Cl:16][CH2:6][CH2:5][N:4]([CH:1]([CH3:3])[CH3:2])[C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1参加物
4
実験手順
In a mixture of compound 4b (483 mg, 2.7 mmol) and CH2Cl2 (50 mL), SOCl2 (0.24 ml, 3.2 mmol) was added dropwise over 20 min. After the addition was complete, the mixture was heated to reflux for one hour. After cooling to room temperature, the mixture was quenched carefully with cold, saturated aqueous K2CO3 (100 mL). The mixture was then extracted with CH2Cl2, and the combined organic layer was washed with saturated aqueous K2CO3, washed with brine, and dried over Na2SO4. The solvent was evaporated and the residue was purified by silica gel column chromatography with hexane/EtOAc (8/1) to provide the intermediate 4c (170 mg, 0.86 mmol, 31.8% yield) as a yellow brown oil. 1H NMR (400 MHz, CDCl3) δ 7.35-7.26 (m, 2H), 6.86-6.76 (m, 3H), 4.19-4.04 (hept, J=6.5 Hz, 1H), 3.65-3.50 (td, J=12.6, 7.3 Hz, 4H), 1.29-1.22 (d, J=6.6 Hz, 6H).