Aluminium lithium hydride → [3,5-Bis(dodecyloxy)phenyl]methanol

HRID 2055761Notes

Reaction equation

HRID 2055761 reaction equation
[H-].[H-].[H-].[H-].[Li+].[Al+3].[CH2:7]([O:16][C:17]1[CH:18]=[C:19]([CH:24]=[C:25]([O:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH2:34][CH2:35][CH3:36])[CH:26]=1)[C:20]([O:22]C)=O)[CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH3:15]>C1COCC1>[CH2:28]([O:27][C:25]1[CH:24]=[C:19]([CH:18]=[C:17]([O:16][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:10][CH2:11][CH3:12])[CH:26]=1)[CH2:20][OH:22])[CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:7][CH2:8][CH3:9]

Participants

4

Reactant 2

HCID 21226445Aluminium lithium hydrideHCID 69305989HCID 69305989, compound

Product 1

HCID 58788077[3,5-Bis(dodecyloxy)phenyl]methanol

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

To a flame dried 1 L RBF containing a stir bar, LAH (1.80 g, 47.5 mmol) was added. The RBF was placed in an ice bath and the reaction was capped with a septum containing a nitrogen gas line and an out-vent. Dry THF (10 mL) was added through the septum while the mixture was stirring. Methyl 3,5-dinonyloxybenzoate (20 g, 39.6 mmol) was dissolved and added in 60 mL dry THF, drop-wise through the septum. After 30 minutes, the nitrogen line and out-vent were removed and the septum was changed. The mixture was allowed to stir overnight. The RBF was placed in an ice bath. Distilled water (250 mL) was added drop-wise through the septum until the color of the reaction mixture turned white-grey. The reaction mixture was allowed to stir at room temperature for 10 minutes and then 100 mL 1M hydrochloric acid was added until the pH reached lower than 2. The mixture was then extracted with ether (5 times using 200 mL). The ether layers were combined and then washed with 200 mL distilled water, 200 mL of aqueous sodium carbonate (5%), 200 mL distilled water, and 200 mL brine, and then dried with magnesium sulfate and gravity filtered. The solvent was removed under reduced pressure yielding 13.2 g or 92.6%. The NMR characterization data for the derivative is as follows. 1NMR (300 MHz, CDCl3): 0.87 (t, J=6.6, 6H, CH2CH3), 1.15-1.6 (m, 36H, CH2(CH2)9), 1.76 (p, J=8.0, 4H, OCH2CH2), 3.9 (t, J=6.6, 4H, OCH2CH2), 4.6 (d, J=5.0, 2H, ArCH2), 6.36 (t, J=2.2, 1H, ArH), 6.52 (d, J=2.2, 2H, ArH).

Workup

  1. customTo a flame dried 1 L RBF
  2. additioncontaining a stir bar
  3. customThe RBF was placed in an ice bath
  4. customthe reaction was capped with a septum
  5. additioncontaining a nitrogen gas line
  6. customthe nitrogen line and out-vent were removed
  7. stirringto stir overnight
  8. customThe RBF was placed in an ice bath
  9. additionDistilled water (250 mL) was added drop-wise through the septum until the color of the reaction mixture
  10. stirringto stir at room temperature for 10 minutes
  11. addition100 mL 1M hydrochloric acid was added until the pH
  12. extractionThe mixture was then extracted with ether (5 times using 200 mL)
  13. washwashed with 200 mL
  14. distillationdistilled water, 200 mL of aqueous sodium carbonate (5%), 200 mL
  15. distillationdistilled water, and 200 mL brine
  16. dry with materialdried with magnesium sulfate and gravity
  17. filtrationfiltered
  18. customThe solvent was removed under reduced pressure
  19. customyielding 13.2 g or 92.6%

Sources & evidence

ORD record
ord-063872ed95754102ab26bb38fed69933
Source dataset
uspto-grants-2008_02
Patent number
US07332529B2

Reaction notes

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