Imidazole → HCID 69853166, compound

HRID 1985306Notes

Reaction equation

HRID 1985306 reaction equation
[Br:1][C:2]1[CH:3]=[C:4]([CH:8]=[CH:9][CH:10]=1)[CH2:5][CH2:6][OH:7].[C:11]([Si:15](Cl)([C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1)[C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1)([CH3:14])([CH3:13])[CH3:12].N1C=CN=C1>CN(C)C=O.C(OCC)(=O)C>[Br:1][C:2]1[CH:3]=[C:4]([CH:8]=[CH:9][CH:10]=1)[CH2:5][CH2:6][O:7][Si:15]([C:11]([CH3:14])([CH3:13])[CH3:12])([C:22]1[CH:23]=[CH:24][CH:25]=[CH:26][CH:27]=1)[C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1

Participants

6

Reactant 3

HCID 795ImidazoleHCID 94078tert-ButyldiphenylchlorosilaneHCID 27340902-(3-Bromophenyl)ethan-1-ol

Product 1

HCID 69853166HCID 69853166, compound

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

3-Bromophenethyl alcohol was dissolved in 110 ml of N,N-dimethylformamide, and 16 ml of t-butyl chlorodiphenyl silane and 8.3 g of imidazole were added. After stirring was continued at room temperature overnight, the solution was diluted with ethyl acetate, and washed successively with 1N hydrochloric acid and saturated brine. After drying the organic layer over anhydrous magnesium sulfate, the solvent was evaporated. The residue was purified by silica gel column chromatography, to give 22.1 g of [(3-bromophenethyl)oxy] (t-butyl)diphenyl silane in the 4:1 hexane-ethyl acetate fraction. Then, the obtained 22.1 g of [(3-bromophenethyl)oxy] (t-butyl) diphenyl silane was dissolved in 200 ml of tetrahydrofuran, and the mixture was cooled to −78° C. under nitrogen atmosphere. 37 ml of Butyl lithium (1.52 M solution in hexane) was added thereto, and the mixture was stirred for 30 minutes, and then 10 ml of 4-formylmorpholine was added. After stirring was continued at −78° C. for 1 hour, 1N-hydrochloric acid was added, and the mixture was extracted with ethyl acetate. The organic layer was washed with water and saturated brine, dried over anhydrous magnesium sulfate, and the solvent was evaporated. The residue was purified by silica gel column chromatography, to give 17 g of the title compound in the 4:1 hexane-ethyl acetate fraction.

Workup

  1. washwashed successively with 1N hydrochloric acid and saturated brine
  2. dry with materialAfter drying the organic layer over anhydrous magnesium sulfate
  3. customthe solvent was evaporated
  4. customThe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-c15a192533a84e9d9c527677031de94f
Source dataset
uspto-grants-2009_06
Patent number
US07544835B2

Reaction notes

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