1,5-dibromo-2-(methoxymethoxy)-4-propan-2-ylbenzene

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2,4-dibromo-5-isopropylphenol (512 g, 1.74 mol) in chloroform (1.74 L), N,N-diisopropylethylamine (364 mL, 2.09 mol) was added, and cooled on ice. Chloromethyl methyl ether (159 mL, 2.09 mol) was added dropwise over 60 minutes, and the mixture was stirred at room temperature for 1 hour. The reaction mixture was cooled on ice, and a 1M aqueous solution of sodium hydroxide (1.5 L) was added dropwise to separate the organic layer. The organic layer was washed with a 1M aqueous solution of sodium hydroxide (1.5 L) and water (1.5 L), and then dried over anhydrous magnesium sulfate. After filtering off the desiccant, the solvent was distilled off under reduced pressure. The resulting residue was purified by distillation under reduced pressure (0.93 to 1.5 hpa, 122° C. to 137° C.) to give 1,5-dibromo-2-isopropyl-4-(methoxymethoxy)benzene (548 g, 96%) as a light yellow oil. cooled on ice The reaction mixture was cooled on ice to separate the organic layer The organic layer was washed with a 1M aqueous solution of sodium hydroxide (1.5 L) and water (1.5 L) dried over anhydrous magnesium sulfate After filtering off the desiccant the solvent was distilled off under reduced pressure The resulting residue was purified by distillation under reduced pressure (0.93 to 1.5 hpa, 122° C. to 137° C.)