Potassium ethanethioate → HCID 58595092, compound

HRID 891659Notes

Reaction equation

HRID 891659 reaction equation
[Si:1]([O:8][CH2:9][C@@H:10]([NH:15][C:16]([C:18]1[N:19]=[C:20]([N:23]2[CH2:26][CH:25](OS(C)(=O)=O)[CH2:24]2)[S:21][CH:22]=1)=[O:17])[CH2:11][CH:12]([CH3:14])[CH3:13])([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].[C:32]([O-:35])(=[S:34])[CH3:33].[K+]>CN(C)C=O>[C:32]([S:34][CH:25]1[CH2:26][N:23]([C:20]2[S:21][CH:22]=[C:18]([C:16](=[O:17])[NH:15][C@H:10]([CH2:9][O:8][Si:1]([C:4]([CH3:5])([CH3:6])[CH3:7])([CH3:3])[CH3:2])[CH2:11][CH:12]([CH3:13])[CH3:14])[N:19]=2)[CH2:24]1)(=[O:35])[CH3:33]

Participants

4

Reactant 2

HCID 23670855Potassium ethanethioateHCID 87884712HCID 87884712, compound

Product 1

HCID 58595092HCID 58595092, compoundYield 56%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of 1-{4-[(1S)-1-(t-butyldimethylsilyloxymethyl)-3-methylbutylcarbamoyl]-1,3-thiazol-2-yl}-3-methanesulfonyloxyazetidine (840 mg, 1.71 mmol) (obtained as described in Reference Example 37(5)) in dimethylformamide (42 ml) was added potassium thioacetate (1.17 mg, 10.2 mmol) at room temperature. The mixture was stirred in an oil bath (80° C.) overnight. After checking the completion of the reaction, the reaction mixture was partitioned between ethyl acetate and 10% aqueous sodium chloride solution. The 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 (3:1→1:1) as the eluant to afford 3-acetylthio-1-{4-[(1S)-1-(t-butyldimethylsilyloxymethyl)-3-methyl-butylcarbamoyl]-1,3-thiazol-2-yl}azetidine (452 mg, yield 56%) as a pale brown oil.

Workup

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

Sources & evidence

ORD record
ord-a7f0f4d0a3fd4066a82842dbafa314b8
Source dataset
uspto-grants-2006_02
Patent number
US07001897B2

Reaction notes

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