Ammonium Chloride → HCID 67457234, compound

HRID 554520Notes

Reaction equation

HRID 554520 reaction equation
CCCCCC.C([Li])CCC.[CH2:12]([O:19][C:20]1[CH:25]=[CH:24][C:23]([F:26])=[CH:22][C:21]=1Br)[C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1.[CH3:28][O:29][C:30]1[CH:37]=[CH:36][C:33]([CH:34]=[O:35])=[CH:32][CH:31]=1.[Cl-].[NH4+]>C1COCC1>[CH2:12]([O:19][C:20]1[CH:25]=[CH:24][C:23]([F:26])=[CH:22][C:21]=1[CH:34]([C:33]1[CH:36]=[CH:37][C:30]([O:29][CH3:28])=[CH:31][CH:32]=1)[OH:35])[C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1

Participants

6

Reactant 4

HCID 25517Ammonium ChlorideHCID 312444-MethoxybenzaldehydeHCID 216409031-(Benzyloxy)-2-bromo-4-fluorobenzeneHCID 178418244HCID 178418244, compound

Product 1

HCID 67457234HCID 67457234, compoundYield 66%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

In a nitrogen stream, an n-butyllithium hexane solution (2.44 M, 2.4 mL) was added dropwise to a solution of 1-benzyloxy-2-bromo-4-fluorobenzene (1.5 g, 5.33 mmol) in THF (60 mL) at −78° C. and the mixture was stirred at the same temperature for 30 minutes. To this solution, a solution of 4-methoxybenzaldehyde (0.6 g, 4.42 mmol) in THF (20 mL) was added dropwise at −78° C. The reaction mixture was stirred at the same temperature for one hour, and then a saturated ammonium chloride aqueous solution was added thereto and the mixture was extracted with ethyl acetate. The organic layer was washed with a saturated sodium chloride aqueous solution and dried (anhydrous magnesium sulfate), and then the solvent was distilled under reduced pressure. The obtained residue was purified by silica gel column chromatography [developing solution=ethyl acetate:n-hexane (1:5)] to obtain the title compound (0.98 g, 66%).

Workup

  1. stirringThe reaction mixture was stirred at the same temperature for one hour
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe organic layer was washed with a saturated sodium chloride aqueous solution
  4. dry with materialdried (anhydrous magnesium sulfate)
  5. distillationthe solvent was distilled under reduced pressure
  6. customThe obtained residue was purified by silica gel column chromatography [developing solution=ethyl acetate:n-hexane (1:5)]

Sources & evidence

ORD record
ord-cfa9bfcd726e4eef9e44ad3e4b5ebf7c
Source dataset
uspto-grants-2011_11
Patent number
US08048897B2

Reaction notes

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