Potassium ethanethioate → HCID 86590892, compound

HRID 891826Notes

Reaction equation

HRID 891826 reaction equation
CS(O[CH:6]1[CH2:9][N:8]([C:10]2[O:11][CH:12]=[C:13]([C:15](=[O:35])[NH:16][C@@H:17]3[CH2:21][CH2:20][N:19]([C:22]([O:24][CH2:25][C:26]4[CH:31]=[CH:30][C:29]([N+:32]([O-:34])=[O:33])=[CH:28][CH:27]=4)=[O:23])[CH2:18]3)[N:14]=2)[CH2:7]1)(=O)=O.[C:36]([O-:39])(=[S:38])[CH3:37].[K+]>CN(C)C=O>[C:36]([S:38][CH:6]1[CH2:9][N:8]([C:10]2[O:11][CH:12]=[C:13]([C:15](=[O:35])[NH:16][C@@H:17]3[CH2:21][CH2:20][N:19]([C:22]([O:24][CH2:25][C:26]4[CH:31]=[CH:30][C:29]([N+:32]([O-:34])=[O:33])=[CH:28][CH:27]=4)=[O:23])[CH2:18]3)[N:14]=2)[CH2:7]1)(=[O:39])[CH3:37]

Participants

4

Reactant 2

HCID 23670855Potassium ethanethioateHCID 86590891HCID 86590891, compound

Product 1

HCID 86590892HCID 86590892, compoundYield 54.2%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of 3-methanesulfonyloxy-1-{4-[(3R)-1-(p-nitrobenzyloxycarbonyl)-pyrrolidin-3-ylcarbamoyl]-1,3-oxazol-2-yl}azetidine (540 mg, 1.06 mmol) (obtained as described in Reference Example 77(3)) in dimethylformamide (27 ml) was added potassium thioacetate (726 mg, 6.36 mmol) at room temperature, and the mixture was stirred in an oil bath (80° C.) for 9 hours. After checking the completion of the reaction, the mixture was partitioned between ethyl acetate and 10% aqueous sodium chloride solution. The organic layer was washed 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 (1:6)→ethyl acetate as the eluant to afford 3-acetylthio-1-{4-[(3R)-1-(p-nitrobenzyloxycarbonyl)-pyrrolidin-3-ylcarbamoyl]-1,3-oxazol-2-yl}azetidine (281 mg, yield 54%) as a pale brown solid.

Workup

  1. customthe completion of the reaction
  2. customthe mixture was partitioned between ethyl acetate and 10% aqueous sodium chloride solution
  3. washThe organic layer was washed 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-4fad693c1bb140f58d012c5af7276579
Source dataset
uspto-grants-2006_02
Patent number
US07001897B2

Reaction notes

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