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Ethanol → 2-(4-Fluorophenyl)-2-methylbutyl alcohol

HRID 1589457
Notes
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Reaction equation

HRID 1589457 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]([CH3:14])([CH2:12][CH3:13])[C:9](O)=[O:10])=[CH:4][CH:3]=1.[H-].[Al+3].[Li+].[H-].[H-].[H-].C(O)C.O>O1CCCC1>[F:1][C:2]1[CH:3]=[CH:4][C:5]([C:8]([CH3:14])([CH2:12][CH3:13])[CH2:9][OH:10])=[CH:6][CH:7]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 702EthanolHCID 962WaterHCID 137117812-(4-Fluorophenyl)-2-methylbutanoic acidHCID 21226445Aluminium lithium hydride2×

Product 1

HCID 155826502-(4-Fluorophenyl)-2-methylbutyl alcoholYield 93.3%

Reagents, catalysts & solvents 1

HCID 8028
Tetrahydrofuran
Solvent
2×

Procedure

A solution of 3.0 g of 2-(4-fluorophenyl)-2-methylbutyric acid in 10 ml of tetrahydrofuran was added dropwise to a mixture of 20 ml of tetrahydrofuran and 0.5 g of lithium aluminum hydride at 40° C. The temperature was then elevated and the mixture was refluxed for 30 minutes. The mixture was cooled to room temperature and ethanol was added dropwise to the mixture to decompose excessive lithium aluminum hydride. Then, water was added to the mixture to complete the decomposition. The formed precipitate was removed by filtration and tetrahydrofuran was removed from the filtrate by distillation under reduced pressure. The residue was extracted with benzene, and the benzene extract was washed with water direct, over Na2SO4, and evaporated under reduced pressure to give 2.6 g of 2-(4-fluorophenyl)-2-methylbutyl alcohol.

Workup

  1. temperaturethe mixture was refluxed for 30 minutes
  2. customThe formed precipitate was removed by filtration and tetrahydrofuran
  3. customwas removed from the filtrate by distillation under reduced pressure
  4. extractionThe residue was extracted with benzene
  5. extractionthe benzene extract
  6. washwas washed with water direct, over Na2SO4
  7. customevaporated under reduced pressure

Sources & evidence

ORD record
ord-a9ca438ecc204a3796574b6cf746c659
Source dataset
uspto-grants-1986_02
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US04570005

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes