Imidazole → tert-Butyldimethyl((4-nitrobenzyl)oxy)silane

HRID 1277032Notes

Reaction equation

HRID 1277032 reaction equation
[N+:1]([C:4]1[CH:11]=[CH:10][C:7]([CH2:8][OH:9])=[CH:6][CH:5]=1)([O-:3])=[O:2].[C:12]([Si:16](Cl)([CH3:18])[CH3:17])([CH3:15])([CH3:14])[CH3:13].N1C=CN=C1.CN(C=O)C>O>[C:12]([Si:16]([CH3:18])([CH3:17])[O:9][CH2:8][C:7]1[CH:6]=[CH:5][C:4]([N+:1]([O-:3])=[O:2])=[CH:11][CH:10]=1)([CH3:15])([CH3:14])[CH3:13]

Participants

6

Reactant 4

HCID 795ImidazoleHCID 6228DimethylformamideHCID 28928tert-Butyldimethylsilyl chlorideHCID 692754-Nitrobenzyl alcohol

Product 1

HCID 11065418tert-Butyldimethyl((4-nitrobenzyl)oxy)silaneYield 100.2%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A mixture of 4-nitrobenzylalcohol(10.0 g), tertbutyl-dimethylsilyl chloride (11.8 g), imidazole (11.2 g) and DMF (50 ml) was stirred at room temperature for 1.5 hours. To the mixture was added water (500 ml), and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated sodium chloride solution, dried with anhydrous sodium sulfate, and concentrated under reduced pressure. The residue was separated and purified with column chromatography (ethyl acetate/hexane=1/7) to give tert-butyldimethyl-4-nitrobenzyloxysilane (17.5 g) as pale yellow oil.

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with saturated sodium chloride solution
  3. dry with materialdried with anhydrous sodium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was separated
  6. custompurified with column chromatography (ethyl acetate/hexane=1/7)

Sources & evidence

ORD record
ord-7c8f710559964c61a31220db588578ab
Source dataset
uspto-grants-2000_12
Patent number
US06166006

Reaction notes

Loading…