Imidazole → HCID 59517468, compound

HRID 2079203Notes

Reaction equation

HRID 2079203 reaction equation
N1C=CN=C1.Cl[Si:7]([CH:14]([CH3:16])[CH3:15])([CH:11]([CH3:13])[CH3:12])[CH:8]([CH3:10])[CH3:9].[F:17][C:18]1[CH:19]=[C:20]([CH:23]=[C:24]([O:27][CH3:28])[C:25]=1[OH:26])[CH:21]=[O:22].O>CN(C=O)C.C(OCC)(=O)C>[F:17][C:18]1[CH:19]=[C:20]([CH:23]=[C:24]([O:27][CH3:28])[C:25]=1[O:26][Si:7]([CH:14]([CH3:16])[CH3:15])([CH:11]([CH3:13])[CH3:12])[CH:8]([CH3:10])[CH3:9])[CH:21]=[O:22]

Participants

7

Reactant 4

HCID 795ImidazoleHCID 962WaterHCID 139400Triisopropylsilyl chlorideHCID 5984523-Fluoro-4-hydroxy-5-methoxybenzaldehyde

Product 1

HCID 59517468HCID 59517468, compound

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

After adding 0.52 g of imidazole and 1.49 ml of chlorotriisopropylsilane to a solution of 1.0 g of 3-fluoro-5-methoxy-4-hydroxybenzaldehyde [CAS No. 79418-78-3] in 15 ml of DMF, the mixture was stirred at room temperature for 17 hours. Water was added to the reaction mixture and extraction was performed with ethyl acetate. The organic layer was washed with dilute hydrochloric acid and saturated brine, and then dried over anhydrous sodium sulfate. The desiccating agent was filtered off and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate-heptane) to give the title compound (1.67 g) as a colorless oil.

Workup

  1. washThe organic layer was washed with dilute hydrochloric acid and saturated brine
  2. dry with materialdried over anhydrous sodium sulfate
  3. filtrationThe desiccating agent was filtered off
  4. concentrationthe filtrate was concentrated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (ethyl acetate-heptane)

Sources & evidence

ORD record
ord-fe3cf92ad1774350a07c168dadc741fa
Source dataset
uspto-grants-2011_04
Patent number
US07928228B2

Reaction notes

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