Potassium Carbonate → Benzyl 2-hydroxy-4-(2-methylallyloxy)benzoate

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To a mixture of 17 g of benzyl 2,4-dihydroxybenzoate (0.07 mol) and 10 g of potassium carbonate (0.077 mol) in 60 ml of DMF brought to 70° C. were added 6.81 ml of methyallyl chloride (0.07 mol) dropwise over 1 hour. The mixture was left at 70° C. for 2 hours. It is cooled to about 40° C. and the salts are filtered off. The salts were washed with DMF. The liquids were combined, and the solvent was evaporated off. A brown oil was obtained which was purified on silica (eluent: 70/30 heptane/CH2Cl2). The head fractions were pooled to give 12 g (yield: 57%) of benzyl 2-hydroxy-4-(2-methylallyloxy)benzoate in the form of a colourless oil.

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