[CH2:1]([O:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][C:6]=1[CH2:11][CH2:12][CH2:13][OH:14])[CH2:2][CH3:3].C(N(CC)CC)C.[CH3:22][S:23](Cl)(=[O:25])=[O:24]>C1COCC1.C(OCC)(=O)C>[CH3:22][S:23]([O:14][CH2:13][CH2:12][CH2:11][C:6]1[CH:7]=[CH:8][CH:9]=[CH:10][C:5]=1[O:4][CH2:1][CH2:2][CH3:3])(=[O:25])=[O:24]To 3-(2-propoxyphenyl)-1-propanol (729 mg) dissolved in THF (35 ml) were added at 0° C. triethylamine (1.57 ml) and methanesulfonyl chloride (0.44 ml). The resulting mixture was stirred at 0° C. for 20 minutes and at room temperature for 2 hours. The reaction mixture was diluted with ethyl acetate and was washed respectively with water and an aqueous saturated solution of sodium chloride, and the organic layer was dried with magnesium sulfate. The resulting organic layer was evaporated under reduced pressure to remove the solvent to obtain 3-(2-propoxyphenyl)propyl methanesulfonate (1.06 g) as a colorless oil.
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