Imidazole → HCID 22710652, compound

HRID 352837Notes

Reaction equation

HRID 352837 reaction equation
[CH2:1]([N:8]1[CH2:13][CH2:12][N:11]([CH2:14][C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)[CH2:10][CH:9]1[CH2:21][OH:22])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.N1C=CN=C1.[C:28]([Si:32](Cl)([C:39]1[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=1)[C:33]1[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=1)([CH3:31])([CH3:30])[CH3:29]>CN(C)C=O>[Si:32]([O:22][CH2:21][CH:9]1[CH2:10][N:11]([CH2:14][C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)[CH2:12][CH2:13][N:8]1[CH2:1][C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1)([C:28]([CH3:31])([CH3:30])[CH3:29])([C:39]1[CH:40]=[CH:41][CH:42]=[CH:43][CH:44]=1)[C:33]1[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=1

Participants

5

Reactant 3

HCID 795ImidazoleHCID 94078tert-ButyldiphenylchlorosilaneHCID 10827800(1,4-Dibenzylpiperazin-2-yl)methanol

Product 1

HCID 22710652HCID 22710652, compound

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

In N,N-dimethylformamide (20 ml) were dissolved 1,4-dibenzyl-2-hydroxymethylpiperazine (1.11 g) and imidazole (347 mg). Under ice cooling, tert-butylchlorodiphenylsilane (1.17 ml, 1.24 g) was added to the reaction mixture, followed by stirring at room temperature for 14.5 hours. The solvent was distilled off under reduced pressure. The residue was extracted with ethyl acetate and a saturated aqueous solution of sodium bicarbonate. The organic layer was then washed with saturated aqueous NaCl solution, dried over anhydrous sodium sulfate and distilled under reduced pressure to remove the solvent. The residue was subjected to column chromatography (hexane:ethyl acetate=9:1→8:2) using as a carrier silica gel, whereby the title compound (1.42 g) was obtained.

Workup

  1. distillationThe solvent was distilled off under reduced pressure
  2. extractionThe residue was extracted with ethyl acetate
  3. washThe organic layer was then washed with saturated aqueous NaCl solution
  4. dry with materialdried over anhydrous sodium sulfate
  5. distillationdistilled under reduced pressure
  6. customto remove the solvent
  7. customwas obtained

Sources & evidence

ORD record
ord-44d2c79d0a774ad486676398dc607ff5
Source dataset
uspto-grants-2004_06
Patent number
US06747023B1

Reaction notes

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