Imidazole → 4-Trimethylsilylethynyl-1-octyn-4-ol trimethylsilyl ether

HRID 126725Notes

Reaction equation

HRID 126725 reaction equation
[CH3:1][Si:2]([C:5]#[C:6][C:7]([OH:15])([CH2:11][CH2:12][CH2:13][CH3:14])[CH2:8][C:9]#[CH:10])([CH3:4])[CH3:3].N1C=CN=C1.CN(C)C=O.Cl[Si:27]([CH3:30])([CH3:29])[CH3:28]>CCCCCC>[CH3:28][Si:27]([O:15][C:7]([C:6]#[C:5][Si:2]([CH3:3])([CH3:1])[CH3:4])([CH2:11][CH2:12][CH2:13][CH3:14])[CH2:8][C:9]#[CH:10])([CH3:30])[CH3:29]

Participants

6

Reactant 4

HCID 795ImidazoleHCID 6228DimethylformamideHCID 6397ChlorotrimethylsilaneHCID 127861934-Trimethylsilylethynyl-1-octyn-4-ol

Product 1

HCID 572330774-Trimethylsilylethynyl-1-octyn-4-ol trimethylsilyl ether

Reagents, catalysts & solvents 1

HCID 8058HexaneSolvent

Procedure

To a stirred mixture of 8.5 g. of 4-trimethylsilylethynyl-1-octyn-4-ol and 6.2 g. of imidazole in 24 ml. of dry dimethylformamide is added, under nitrogen, 5.7 ml. of chlorotrimethylsilane, in a slow stream, via a syringe. The mixture is stirred in an ice-bath for one hour and then at room temperature overnight. The mixture is poured into hexane, washed with saturated sodium bicarbonate solution, water and then brine and dried over sodium sulfate. The solvents are evaporated to dryness giving 11.1 g. of the desired product.

Workup

  1. additionTo a stirred mixture of 8.5 g
  2. customat room temperature
  3. customovernight
  4. washwashed with saturated sodium bicarbonate solution, water
  5. dry with materialbrine and dried over sodium sulfate
  6. customThe solvents are evaporated to dryness
  7. customgiving 11.1 g

Sources & evidence

ORD record
ord-868cba1401de44109d9bfa28ba80cd9f
Source dataset
uspto-grants-1981_03
Patent number
US04254036

Reaction notes

Loading…