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Cesium fluoride → Tetraethyl 5,5'-(naphthalene-2,7-diyl)diisophthalate

HRID 1484219
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HRID 1484219 반응식
Br[C:2]1[CH:11]=[CH:10][C:9]2[C:4](=[CH:5][C:6](Br)=[CH:7][CH:8]=2)[CH:3]=1.CC1(C)C(C)(C)OB([C:21]2[CH:22]=[C:23]([C:32]([O:34][CH2:35][CH3:36])=[O:33])[CH:24]=[C:25]([CH:31]=2)[C:26]([O:28][CH2:29][CH3:30])=[O:27])O1.[F-].[Cs+]>C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH:3]1[C:4]2[C:9](=[CH:8][CH:7]=[C:6]([C:21]3[CH:31]=[C:25]([C:26]([O:28][CH2:29][CH3:30])=[O:27])[CH:24]=[C:23]([CH:22]=3)[C:32]([O:34][CH2:35][CH3:36])=[O:33])[CH:5]=2)[CH:10]=[CH:11][C:2]=1[C:21]1[CH:31]=[C:25]([C:26]([O:28][CH2:29][CH3:30])=[O:27])[CH:24]=[C:23]([CH:22]=1)[C:32]([O:34][CH2:35][CH3:36])=[O:33]
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

5

반응물 3

HCID 25953Cesium fluorideHCID 6253552,7-DibromonaphthaleneHCID 71285691Diethyl 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)isophthalate

생성물 1

HCID 71283170Tetraethyl 5,5'-(naphthalene-2,7-diyl)diisophthalate수율 76%

시약·촉매·용매 1

HCID 178418397HCID 178418397, 화합물
촉매

실험 절차

To a 250 mL Schlenk flask, 2,7-dibromonaphthalene (2.00 g, 6.99 mmol), diethyl 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)isophthalate (6.09 g, 17.48 mmol), CsF (4.00 g) and Pd(PPh3)4 (200 mg) were added. The flask was connected to a Schlenk line and evacuated of air then refilled with nitrogen. 160 mL of 1,2-dimethoxyethane (DME) was degassed (two hours) and added to the flask through a canula. The flask was equipped with a water condenser and refluxed under nitrogen for 2 days. The solvent was removed on a rotary evaporator. 120 mL of H2O was added and then extracted with CHCl3. The organic phase was dried with MgSO4. After removal of the CHCl3 solvent, the crude product was washed with acetone and then hexane (3×20 mL for each) to give a pure product with a yield of 76% (3.02 g) based on 2,7-dibromonaphthalene. 1H NMR (300 MHz, DMSO-d6): δ 1.39 (t, 12H), 4.42 (q, 8H), 7.90 (d, 2H), 8.11 (d, 2H), 8.45 (s, 4H), 8.52 (s, 4H).

후처리

  1. customThe flask was connected to a Schlenk
  2. customline and evacuated of air
  3. additionthen refilled with nitrogen
  4. custom160 mL of 1,2-dimethoxyethane (DME) was degassed (two hours)
  5. additionadded to the flask through a canula
  6. customThe flask was equipped with a water condenser
  7. temperaturerefluxed under nitrogen for 2 days
  8. customThe solvent was removed on a rotary evaporator
  9. addition120 mL of H2O was added
  10. extractionextracted with CHCl3
  11. dry with materialThe organic phase was dried with MgSO4
  12. customAfter removal of the CHCl3 solvent
  13. washthe crude product was washed with acetone
  14. customhexane (3×20 mL for each) to give a pure product with a yield of 76% (3.02 g)

출처 및 근거

ORD 기록
ord-1cd3afbe9fc74de1a5f0228dd2bef60e
출처 데이터셋
uspto-grants-2016_08
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09421514B2

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