反应详情

温度

5 °C

1,3,5-Tri-t-butylbenzene (150 g, 0.6 mol) was dissolved in carbon tetrachloride (300 mL) in a three-necked flask which had been painted black to avoid light and equipped with an overhead stirrer, thermometer and addition funnel under argon. Iron pellets (36 g. 0.64 mol) were added and the slurry was cooled to 5° C. t-Butylcatechol (1.0 g) was added and a solution of bromine (201.6 g, 1.26 mol) in carbon tetrachloride (75 mL) was added over a one hour period. The slurry was stirred for an additional 4 hours at 5° C. and quenched by pouring into ice water. The layers were separated and the organics washed with 10% sodium hydroxide solution. The solution then was washed with salt brine and dried over magnesium sulfate. The solvent was evaporated and the product was distilled under vacuum twice to give 75 g of product which was then recrystallized from heptane to give 47 g of pure product (29% yield).

1. customequipped with an overhead stirrer
2. additionthermometer and addition funnel under argon
3. additionwas added
4. customquenched
5. additionby pouring into ice water
6. customThe layers were separated
7. washthe organics washed with 10% sodium hydroxide solution
8. washThe solution then was washed with salt brine
9. dry with materialdried over magnesium sulfate
10. customThe solvent was evaporated
11. distillationthe product was distilled under vacuum twice