反应详情

温度

5 °C

To a stirred suspension of lithium aluminum hydride (4.12 g, 0.108 mol) in dry tetrahydrofuran under an atmosphere of nitrogen cooled to 5° C. is added a solution of ethyl 4-chloro-2-ethoxybenzoate (12.4 g, 54.24 mmol) in dry tetrahydrofuran (20 ml) dropwise over 15 min. The suspension is stirred at room temperature overnight then cooled to 0° C. and water (4.12 ml), aq. 15% sodium hydroxide (4.12 ml) and water (12.4 ml) added dropwise. The resulting suspension is filtered through celite and washed with ethyl acetate. Evaporate to give a colourless oil that crystallises on standing, triturate with iso-hexane and filter to give 4-chloro-2-ethoxybenzyl alcohol as a colourless solid.

1. temperaturethen cooled to 0° C.
2. filtrationThe resulting suspension is filtered through celite
3. washwashed with ethyl acetate
4. customEvaporate
5. customto give a colourless oil
6. customthat crystallises
7. customtriturate with iso-hexane
8. filtrationfilter