Imidazole → Hexaethyldisiloxane

HRID 481802Notes

Reaction equation

HRID 481802 reaction equation
N1[CH:5]=[CH:4]N=C1.[CH2:6]([Si:8](Cl)([CH2:11][CH3:12])[CH2:9][CH3:10])[CH3:7].[OH2:14]>CN(C)C=O>[CH2:6]([Si:8]([O:14][Si:8]([CH2:4][CH3:5])([CH2:9][CH3:10])[CH2:6][CH3:7])([CH2:11][CH3:12])[CH2:9][CH3:10])[CH3:7]

Participants

5

Reactant 3

HCID 795ImidazoleHCID 962WaterHCID 13819Chlorotriethylsilane

Product 1

HCID 70442Hexaethyldisiloxane

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A solution of 205 (15 mmol) in dimethylformamide (30 mL) is cooled to 0° C. and treated with imidazole (30 mmol) and triethylsilyl chloride (20 mmol). The resultant solution is warmed to room temperature. After 12 h, the reaction mixture is poured into 300 mL of water and extracted with ether (3×40 mL). The ethereal extracts are washed with water (2×25 mL) and saturated aqueous brine (25 mL), dried over magnesium sulfate and concentrated in vacuo. The residue is purified by flash chromatography to afford 206.

Workup

  1. extractionextracted with ether (3×40 mL)
  2. washThe ethereal extracts are washed with water (2×25 mL) and saturated aqueous brine (25 mL)
  3. dry with materialdried over magnesium sulfate
  4. concentrationconcentrated in vacuo
  5. customThe residue is purified by flash chromatography

Sources & evidence

ORD record
ord-28682ee2c41649d19b8a2c84c6c050ec
Source dataset
uspto-grants-1998_08
Patent number
US05789605

Reaction notes

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