反応 #1148667

反応方程式

1,3,5-Tri-t-butylbenzene

bromine

→

product

収率 46.4%

Bromo-3,5-di-t-butylbenzene

収率 46.4%

溶媒

carbon tetrachloride

carbon tetrachloride

反応条件

後処理

1. 1
   その他equipped with an overhead stirrer
2. 2
   workup.ADDITIONthermometer and addition funnel under argon
3. 3
   workup.ADDITIONwere added
4. 4
   workup.ADDITIONwas added
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   その他quenched
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   workup.ADDITIONby pouring into ice water
7. 7
   その他The layers were separated
8. 8
   洗浄the organics washed with 10% sodium hydroxide solution
9. 9
   洗浄The solution was then washed with salt brine
10. 10
    乾燥dried over magnesium sulfate
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    その他The solvent was evaporated
12. 12
    workup.DISTILLATIONthe product was distilled under vacuum twice

実験手順

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 was then 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%).

出典