[OH:1][C:2]1[CH:7]=[C:6]([OH:8])[CH:5]=[CH:4][C:3]=1[C:9](=[O:11])[CH3:10].C(N(CC)C(C)C)(C)C.[CH3:21][O:22][CH2:23]Cl>CN(C)C=O>[OH:1][C:2]1[CH:7]=[C:6]([O:8][CH2:21][O:22][CH3:23])[CH:5]=[CH:4][C:3]=1[C:9](=[O:11])[CH3:10]In 60 ml of dimethylformamide were dissolved 5.0 g of 2',4'-dihydroxyacetophenone and 6.37 g of N,N-diisopropylethylamine, and 2.72 ml of chloromethyl methyl ether was gradually added to the solution under ice cooling. The mixture was stirred under ice cooling for 20 minutes and a reaction was carried out at room temperature for 1.5 hours. After the reaction, the reaction mixture was extracted with 300 ml of diethyl ether, and the diethyl ether layer was washed with water (100 ml×2 times), shaken with a saturated aqueous solution of sodium chloride (50 ml×2 times), dried with anhydrous sodium sulfate and filtered. The solvent was removed from the filtrate by distillation and the residue was subjected to the silica gel chromatography (3.5 cm in diameter; 72.8 g; n-hexane/ethyl acetate=4/1; 0.3 kg/cm2) to obtain 5.66 g (yield=87.8%) of 2'-hydroxy-4'-methoxymethoxyacetophenone in the form of a colorless oil.
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