Ethylene Glycol → 1-(4-Bromophenyl)cyclopropane-1-carboxylic acid

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To a solution of KOH (6.06 g, 0.11 mol) in 10 mL of H2O was added 40 mL of ethylene glycol and 1-(4-bromophenyl)-cyclopropanecarbonitrile (Intermediate 113, 10.0 g, 0.45 mol). This solution was heated to 135-140° C. for 4 h, cooled to room temperature, and then poured into a mixture of 100 mL ice and 10% aqueous HCl. The resulting mixture was allowed to stand overnight at 5° C., the solid was collected by filtration and washed with H2O. The colorless solid was dried under reduced pressure to give 10.6 g (97%) of the title compound.

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