Chloromethyl Methyl Ether → 2'-Hydroxy-4',6'-bis(methoxymethoxy)-3'-(3-methyl2-butenyl)acetophenone

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Then, 30.0 g of 2',4',6'-trihydroxy-3'-(3-methyl- 2-butenyl)acetophenone was dissolved in tetrahydrofuran and 131.7 ml of N,N-diisopropylethylamine was added to the solution, and the mixture was stirred for 1 hour. Then, 48.0 ml of chloromethyl methyl ether was dropped into the mixture and the mixture was stirred for 3 hours. The mixture was extracted with dimethyl ether, and the organic layer was washed with water, dried with anhydrous sodium sulfate and concentrated under reduced pressure. Crystallization from ethyl acetate gave 21.5 g of 2'-hydroxy-4',6'-bis(methoxymethoxy)-3'-(3-methyl-2-butenyl)acetophenone.

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