1-(4-Morpholinocarbonyl-1,3-thiazol-2-yl)-3-methanesulfonyloxyazetidine → 3-Acetylthio-1-(4-morpholinocarbonyl-1,3-thiazol-2-yl)azetidine

HRID 891563Notes

Reaction equation

HRID 891563 reaction equation
[O:1]1[CH2:6][CH2:5][N:4]([C:7]([C:9]2[N:10]=[C:11]([N:14]3[CH2:17][CH:16](OS(C)(=O)=O)[CH2:15]3)[S:12][CH:13]=2)=[O:8])[CH2:3][CH2:2]1.[C:23]([O-:26])(=[S:25])[CH3:24].[K+]>CN(C)C=O>[C:23]([S:25][CH:16]1[CH2:15][N:14]([C:11]2[S:12][CH:13]=[C:9]([C:7]([N:4]3[CH2:3][CH2:2][O:1][CH2:6][CH2:5]3)=[O:8])[N:10]=2)[CH2:17]1)(=[O:26])[CH3:24]

Participants

4

Reactant 2

HCID 222429461-(4-Morpholinocarbonyl-1,3-thiazol-2-yl)-3-methanesulfonyloxyazetidineHCID 23670855Potassium ethanethioate

Product 1

HCID 222427503-Acetylthio-1-(4-morpholinocarbonyl-1,3-thiazol-2-yl)azetidineYield 64%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of 1-(4-morpholinocarbonyl-1,3-thiazol-2-yl)-3-methanesulfonyloxyazetidine (680 mg, 1.96 mmol) (obtained as described in Reference Example 11(3)) in dimethylformamide (20 ml) was added potassium thioacetate (671 mg, 5.87 mmol) at room temperature, and then the reaction mixture was stirred in an oil bath (80° C.) for 18 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 (1:3)→ethyl acetate as the eluant to afford 3-acetylthio-1-(4-morpholinocarbonyl-1,3-thiazol-2-yl)azetidine (411 mg, yield 64%) as a pale brown solid.

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-b4da952b6ae74e03a2a44dc58c2490d0
Source dataset
uspto-grants-2006_02
Patent number
US07001897B2

Reaction notes

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