Imidazole → HCID 59517039, compound

HRID 1698718Notes

Reaction equation

HRID 1698718 reaction equation
N1C=CN=C1.[OH:6][C:7]1[CH:8]=[C:9]([CH:12]=[C:13]([CH3:15])[CH:14]=1)[CH:10]=[O:11].Cl[Si:17]([CH:24]([CH3:26])[CH3:25])([CH:21]([CH3:23])[CH3:22])[CH:18]([CH3:20])[CH3:19].O>CN(C=O)C.C(OCC)C>[CH3:15][C:13]1[CH:12]=[C:9]([CH:8]=[C:7]([O:6][Si:17]([CH:24]([CH3:26])[CH3:25])([CH:21]([CH3:23])[CH3:22])[CH:18]([CH3:20])[CH3:19])[CH:14]=1)[CH:10]=[O:11]

Participants

7

Reactant 4

HCID 795ImidazoleHCID 962WaterHCID 139400Triisopropylsilyl chlorideHCID 122931233-Hydroxy-5-methylbenzaldehyde

Product 1

HCID 59517039HCID 59517039, compound

Reagents, catalysts & solvents 2

HCID 3283Diethyl EtherSolventHCID 6228DimethylformamideSolvent

Procedure

After adding 1.11 g of imidazole to a solution of 2.02 g of 3-hydroxy-5-methylbenzaldehyde [CAS No. 60549-26-0] in 20 ml of DMF, the reaction mixture was cooled to 0° C. Next, 3.56 ml of chlorotriisopropylsilane was added and the mixture was stirred at room temperature for 19 hours and 10 minutes. Water was added to the reaction mixture, and extraction was performed twice with diethyl ether. The organic layer was washed twice with water and then dried over anhydrous magnesium sulfate. The desiccating agent was filtered off and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (hexane-diethyl ether) to give the title compound (3.86 g) as a yellow oil.

Workup

  1. washThe organic layer was washed twice with water
  2. dry with materialdried over anhydrous magnesium 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 (hexane-diethyl ether)

Sources & evidence

ORD record
ord-2d39bfa52c6c4037ada167b032088422
Source dataset
uspto-grants-2012_04
Patent number
US08163787B2

Reaction notes

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