Sodium borohydride → HCID 66778553, compound

HRID 2091377Notes

Reaction equation

HRID 2091377 reaction equation
[F:1][C:2]1[C:7]2[C:8]([CH3:16])=[C:9]([C:11](=[O:15])[CH:12]([CH3:14])[CH3:13])[O:10][C:6]=2[CH:5]=[CH:4][CH:3]=1.[BH4-].[Na+]>O1CCCC1.CO>[F:1][C:2]1[C:7]2[C:8]([CH3:16])=[C:9]([CH:11]([OH:15])[CH:12]([CH3:13])[CH3:14])[O:10][C:6]=2[CH:5]=[CH:4][CH:3]=1

Participants

5

Reactant 2

HCID 4311764Sodium borohydrideHCID 66778352HCID 66778352, compound2×

Product 1

HCID 66778553HCID 66778553, compoundYield 99.1%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

1-(4-Fluoro-3-methyl-1-benzofuran-2-yl)-2-methylpropan-1-one (1.4 g) synthesized in the above-mentioned (1) was dissolved in tetrahydrofuran (20 mL) and methanol (2 mL), and sodium borohydride (90%, 0.53 g) was added to the solution under ice-cooling. The ice bath was removed, and the reaction mixture was stirred at room temperature for 1 hr then ice-cooled again, and water (2 mL) and 1N hydrochloric acid (5 mL) were carefully added to the mixture, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over magnesium sulfate, and concentrated under reduced pressure to give a crude product (1.4 g, quantitative) of the title object compound as a pale-yellow oil.

Workup

  1. temperaturecooling
  2. customThe ice bath was removed
  3. temperatureice-cooled again
  4. additionwater (2 mL) and 1N hydrochloric acid (5 mL) were carefully added to the mixture
  5. extractionthe mixture was extracted with ethyl acetate
  6. washThe extract was washed with saturated brine
  7. dry with materialdried over magnesium sulfate
  8. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-e97cbc9e194d4f93bb155150e6a685ba
Source dataset
uspto-grants-2013_05
Patent number
US08436043B2

Reaction notes

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