tert-Butyldimethylsilyl chloride → {[4-(Bromomethyl)phenyl]methoxy}(tert-butyl)dimethylsilane

HRID 5927Notes

Reaction equation

HRID 5927 reaction equation
[Br:1][CH2:2][C:3]1[CH:10]=[CH:9][C:6]([CH2:7][OH:8])=[CH:5][CH:4]=1.C(N(CC)C(C)C)(C)C.[Si:20](Cl)([C:23]([CH3:26])([CH3:25])[CH3:24])([CH3:22])[CH3:21]>C(Cl)Cl.CN(C)C1C=CN=CC=1>[Br:1][CH2:2][C:3]1[CH:10]=[CH:9][C:6]([CH2:7][O:8][Si:20]([C:23]([CH3:26])([CH3:25])[CH3:24])([CH3:22])[CH3:21])=[CH:5][CH:4]=1

Participants

6

Reactant 3

HCID 28928tert-Butyldimethylsilyl chlorideHCID 81531DiisopropylethylamineHCID 103304344-(Bromomethyl)benzyl alcohol

Product 1

HCID 10757711{[4-(Bromomethyl)phenyl]methoxy}(tert-butyl)dimethylsilaneYield 71%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent

Procedure

To a solution of the product of Example 4 Step A, (4.44 g, 22.1 mmol) in CH2Cl2 was added N,N-diisopropylethyl amine (1.2 eq.) and 4-dimethylaminopyridine (0.1 eq.), and t-butyldimethylsilyl chloride (1.2 eq.). The mixture was stirred for 1.5 hours at room temperature, then concentrated in vacuo. The residue was dissolved in ethyl acetate and washed with water, brine, dried (MgSO4), filtered, and concentrated in vacuo. The residue was chromatographed on silica (ethyl acetate/hexanes (2.5/97.5)) to afford 5.0 g (71%) of the title compound.

Workup

  1. concentrationconcentrated in vacuo
  2. dissolutionThe residue was dissolved in ethyl acetate
  3. washwashed with water, brine
  4. dry with materialdried (MgSO4)
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue was chromatographed on silica (ethyl acetate/hexanes (2.5/97.5))

Sources & evidence

ORD record
ord-4b757282b70e424b90883123caba82ec
Source dataset
uspto-grants-1993_09
Patent number
US05246944

Reaction notes

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