反应详情

LAH (61.00 mL, 1.0 M in THF, 61.00 mmol) was added to a solution of 3-chloro-2-methyl-benzoic acid methyl ester (4.50 g, 24.40 mmol) in THF at 0° C. The reaction mixture was stirred for 1 hour, water was added to quench the reaction. The aqueous layer was extracted with Et2O (3×150 mL), and the combined organic phases were washed with brine (1×150 mL) and dried over MgSO4. Purification by column chromatography using hex:EtOAc (4:1) as the eluant afforded 3.97 g of the title compound. Spectroscopic data: 1H NMR (300 MHz, CDCl3.) δ 1.94 (br s, 1H), 2.36 (s, 3H), 4.67 (br s, 2H), 7.11 (t, J=7.765 Hz, 1H), 7.245 (d, J=7.03 Hz, 1H), 7.30 (d, J=7.91 Hz, 1H).

1. customto quench
2. customthe reaction
3. extractionThe aqueous layer was extracted with Et2O (3×150 mL)
4. washthe combined organic phases were washed with brine (1×150 mL)
5. dry with materialdried over MgSO4
6. customPurification by column chromatography