Benzyl Alcohol → Benzyl 2-chloropropanoate

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[CH2:1]([OH:8])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.N1C=CC=CC=1.[Cl:15][CH:16]([CH3:20])[C:17](Cl)=[O:18]>C(Cl)Cl>[Cl:15][CH:16]([CH3:20])[C:17]([O:8][CH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1)=[O:18]

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온도: 0 °C

실험 절차

Benzyl alcohol (242 mL, 253 g, 2.34 mol) and pyridine (204 mL, 204 g, 2.57 mol) were dissolved in methylene chloride (2.5 L) and cooled to 0° C. 2-Chloropropanoyl chloride (250 mL, 327 g, 2.57 mol) was added dropwise keeping the temperature between 0° C. and 5° C. After addition the mixture was allowed to warm to RT overnight. The mixture was washed with 20% aqueous citric acid (2.5 L), saturated aqueous NaHCO3 (2.5 L), brine (2.5 L), dried (MgSO4), filtered and concentrated in vacuo. The resulting brown liquid (450 g) was dissolved in a small amount of methylene chloride and filtered through a short path of silica gel. After concentration, the crude was purified via bulb-to-bulb distillation (2*10−2 mbar, 90-95° C.) affording the title compound as a pale yellow liquid (420 g, 90%). 1H-NMR: (CDCl3, 300 MHz): δ ppm 1.75 (d, 3H, CH3), 4.45 (q, 1H, CHCl), 5.25 (s, 2H, CH2Ar), 7.40 (m, 5H, ArH).