반응 #1364757

반응 방정식

methanol

6-t-butyl-3-(octadecylaminomethyl)-2,4-dimethylphenol

1,3-benzene-disulfonyl chloride

caustic soda

→

crude product

수율 35.8%

N,N'-Bis(4-t-butyl-3-hydroxy-2,6-dimethylbenzyl)-N,N'-Dioctadecyl-m-Benzenedisulfonamide

수율 35.8%

용매

tetrahydrofuran

acetone

water

water

반응 조건

후처리

1. 1
   온도while maintaining the temperature at 35°-40° C
2. 2
   온도is maintained at 30°-35° C
3. 3
   기타the organic layer is split off
4. 4
   농축concentrated
5. 5
   기타to obtain a viscous oil which
6. 6
   workup.WAITto stand at room temperature for 18 hours
7. 7
   기타the methanol is removed by evaporation
8. 8
   여과The solid is recovered by filtration

실험 절차

A stirred solution of 6-t-butyl-3-(octadecylaminomethyl)-2,4-dimethylphenol (9.18 grams; 0.02 mole) in tetrahydrofuran (50 mls) is treated with a solution of 1,3-benzene-disulfonyl chloride (2.7 grams; 0.01 mole) in acetone (10 mls) over a period of 10 minutes while maintaining the temperature at 35°-40° C. The reaction mixture is then slowly treated with a solution of 50% caustic soda (1.6 grams; 0.02 mole) in water (5 mls) over a period of 15 minutes while the temperature is maintained at 30°-35° C. The mixture is then stirred at room temperature for 20 hours and treated with water (30 mls). The reaction mixture is allowed to settle, and the organic layer is split off and concentrated to obtain a viscous oil which solidifies upon mixing with methanol (25 mls). After allowing the reaction mixture to stand at room temperature for 18 hours, the methanol is removed by evaporation and replaced with absolute ethanol (20 mls). The solid is recovered by filtration to obtain the crude product (4.0 grams; 35.8% of theoretical). Recrystallization from absolute ethanol containing 20% methanol affords the pure product (3.1 grams; m.p. 81°-82° C.).

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