Imidazole → HCID 69543967, compound

HRID 891635Notes

Reaction equation

HRID 891635 reaction equation
[OH:1][CH:2]1[CH2:5][N:4]([C:6]2[S:7][CH:8]=[C:9]([C:11](=[O:18])[NH:12][C@H:13]([CH2:16][OH:17])[CH2:14][CH3:15])[N:10]=2)[CH2:3]1.[Si:19](Cl)([C:22]([CH3:25])([CH3:24])[CH3:23])([CH3:21])[CH3:20].N1C=CN=C1>CN(C)C=O>[Si:19]([O:17][CH2:16][C@@H:13]([NH:12][C:11]([C:9]1[N:10]=[C:6]([N:4]2[CH2:5][CH:2]([OH:1])[CH2:3]2)[S:7][CH:8]=1)=[O:18])[CH2:14][CH3:15])([C:22]([CH3:25])([CH3:24])[CH3:23])([CH3:21])[CH3:20]

Participants

5

Reactant 3

HCID 795ImidazoleHCID 28928tert-Butyldimethylsilyl chlorideHCID 69543925HCID 69543925, compound

Product 1

HCID 69543967HCID 69543967, compoundYield 74.1%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 3-hydroxy-1-{4-[(1S)-1-(hydroxymethyl)-propylcarbamoyl]-1,3-thiazol-2-yl}azetidine (940 mg, 3.50 mmol) (obtained as described in Reference Example 34(3)) in dimethylformamide (47 ml) were added t-butyldimethylsilyl chloride (633 mg, 4.20 mmol) and imidazole (286 mg, 4.20 mmol) in an ice bath, and the reaction mixture was stirred at room temperature for 3 hours. After checking the completion of the reaction, the reaction mixture was partitioned between ethyl acetate and 10% aqueous sodium chloride solution. The obtained organic layer was washed successively with saturated aqueous sodium hydrogencarbonate solution and saturated aqueous sodium chloride solution, dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by chromatography on a silica gel column using n-hexane:ethyl acetate (2:1→1:3) as the eluant to afford 1-{4-[(1S)-1-(t-butyldimethylsilyloxymethyl)propylcarbamoyl]-1,3-thiazol-2-yl}-3-hydroxyazetidine (1.00 g, yield 74%) as a pale yellow oil.

Workup

  1. customthe completion of the reaction
  2. customthe reaction mixture was partitioned between ethyl acetate and 10% aqueous sodium chloride solution
  3. washThe obtained organic layer was washed successively with saturated aqueous sodium hydrogencarbonate solution and saturated aqueous sodium chloride solution
  4. dry with materialdried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by chromatography on a silica gel column

Sources & evidence

ORD record
ord-a335616ab73b4a3f8a3eba627c5aa4d0
Source dataset
uspto-grants-2006_02
Patent number
US07001897B2

Reaction notes

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