Carbazole → 9-Allylcarbazole

HRID 1357878노트

반응식

HRID 1357878 반응식
[H-].[Na+].[CH:3]1[C:15]2[NH:14][C:13]3[C:8](=[CH:9][CH:10]=[CH:11][CH:12]=3)[C:7]=2[CH:6]=[CH:5][CH:4]=1.[CH2:16](Br)[CH:17]=[CH2:18]>C1COCC1.[Br-].C([N+](CCCC)(CCCC)CCCC)CCC>[CH2:18]([N:14]1[C:13]2[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=2[C:7]2[C:15]1=[CH:3][CH:4]=[CH:5][CH:6]=2)[CH:17]=[CH2:16]

참가 물질

6

반응물 3

HCID 6854CarbazoleHCID 7841Allyl bromideHCID 24758Sodium hydride

생성물 1

HCID 30903939-Allylcarbazole수율 82%

시약·촉매·용매 2

HCID 74236Tetrabutylammonium Bromide촉매HCID 8028Tetrahydrofuran용매2회

반응 조건

온도
65 °C

실험 절차

Into a 500 mL round bottom flask fitted with a mechanical stirrer, addition funnel, reflux condenser and nitrogen inlet were placed 12 g of sodium hydride (60% dispersion in mineral oil) and 30 mL of THF. Carbazole (33.4 g, 0.2 mole) was dissolved in 200 mL THF and the pale yellow solution was added dropwise to the reaction mixture while stirring and maintaining the temperature at 35˜40° C. Thereafter, 36.2 g (0.3 mole) of allyl bromide was added drop wise to the reaction mixture and stirring continued for an additional 15 minutes. Tetra-n-butyl ammonium bromide (1.3 g) was added followed by stirring for 20 minutes, and then the temperature was raised to 65° C. and kept at that temperature overnight. The reaction mixture was cooled to room temperature and after filtration, the solvent was removed using a rotary evaporator. The resulting yellow solid was twice recrystallized from methanol to give 34 g (81% yield) of colorless crystalline 9-allyl carbazole m.p. 53-54° C.

후처리

  1. customInto a 500 mL round bottom flask fitted with a mechanical stirrer, addition funnel
  2. temperaturereflux condenser and nitrogen inlet
  3. additionthe pale yellow solution was added dropwise to the reaction mixture
  4. temperaturemaintaining the temperature at 35˜40° C
  5. stirringstirring
  6. stirringby stirring for 20 minutes
  7. customkept at that temperature overnight
  8. temperatureThe reaction mixture was cooled to room temperature
  9. filtrationafter filtration
  10. customthe solvent was removed
  11. customa rotary evaporator
  12. customThe resulting yellow solid was twice recrystallized from methanol

출처 및 근거

ORD 기록
ord-034d7b822544432cb12ad4d0803dc37c
출처 데이터셋
uspto-grants-2003_07
특허 번호
US06593388B2

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