Water → 4-(Tert-butyl-dimethyl-silanyloxy)-3,3-dimethyl-butyronitrile

HRID 1806931Notes

Reaction equation

HRID 1806931 reaction equation
[C:1]([Si:5]([CH3:18])([CH3:17])[O:6][CH2:7][C:8]([CH3:16])([CH3:15])[CH2:9]OS(C)(=O)=O)([CH3:4])([CH3:3])[CH3:2].[C-:19]#[N:20].[K+].O>CS(C)=O>[C:1]([Si:5]([CH3:18])([CH3:17])[O:6][CH2:7][C:8]([CH3:16])([CH3:15])[CH2:9][C:19]#[N:20])([CH3:4])([CH3:3])[CH3:2]

Participants

5

Reactant 3

HCID 962WaterHCID 9032Potassium CyanideHCID 574399153-(Tert-butyldimethylsilyloxy)-2,2-dimethylpropyl methanesulfonate

Product 1

HCID 109772134-(Tert-butyl-dimethyl-silanyloxy)-3,3-dimethyl-butyronitrileYield 57.6%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Conditions

Temperature
120 °C

Procedure

Step C To the solution of methanesulfonic acid 3-(tert-butyl-dimethyl-silanyloxy)-2,2-dimethyl-propyl ester (5 g, 16.8 mmol) in anhydrous dimethyl sulfoxide (50 mL) was added KCN (2.85 g, 44 mmol). The reaction mixture was heated at 120° C. for 16 h. The mixture was cooled, and water was added. The mixture was extracted with ethyl acetate twice. The combined organic layers were washed with saturated aqueous NaHCO3 solution, brine, dried over MgSO4, and concentrated. The residue was purified by chromatography (EtOAc:hexanes=1:4) to give 4-(tert-butyl-dimethyl-silanyloxy)-3,3-dimethyl-butyronitrile as a yellow oil (2.2 g, 57%).

Workup

  1. temperatureThe mixture was cooled
  2. extractionThe mixture was extracted with ethyl acetate twice
  3. washThe combined organic layers were washed with saturated aqueous NaHCO3 solution, brine
  4. dry with materialdried over MgSO4
  5. concentrationconcentrated
  6. customThe residue was purified by chromatography (EtOAc:hexanes=1:4)

Sources & evidence

ORD record
ord-50c3cd0625104d72aefde363d415e49a
Source dataset
uspto-grants-2013_01
Patent number
US08354444B2

Reaction notes

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