[CH2:1]([O:8][C:9]1[C:14]([CH3:15])=[CH:13][C:12]([OH:16])=[CH:11][C:10]=1[CH2:17][CH3:18])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(N(CC)CC)C.[C:26](Cl)(=[O:33])[C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1.Cl>C(Cl)(Cl)Cl>[C:26]([O:16][C:12]1[CH:13]=[C:14]([CH3:15])[C:9]([O:8][CH2:1][C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)=[C:10]([CH2:17][CH3:18])[CH:11]=1)(=[O:33])[C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1To a mixture of 6.3 g of 4-benzyloxy-3-ethyl-5-methylphenol, 3.2 g of triethylamine and 50 ml of chloroform was added dropwise 4.0 g of benzoyl chloride, while stirring at 0° C. After stirring at room temperature for 6 hours, the reaction mixture was concentrated under reduced pressure to give a residue. To the residue was added 100 ml of 10% hydrochloric acid, and the mixture was extracted with 100 ml of ethyl acetate. The ethyl acetate layer was successively washed 10% hydrochloric acid, saturated aqueous sodium hydrogen carbonate solution and saturated saline solution, dried over anhydrous magnesium sulfate, and then concentrated under reduced pressure, which afforded 8.4 g of crude 4-benzyloxy-3-ethyl-5-methylphenyl benzoate (93% yield).
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