1-(4-Carbamoyl-1,3-thiazol-2-yl)-3-methanesulfonyloxyazetidine → 3-Acetylthio-1-(4-carbamoyl-1,3-thiazol-2-yl)azetidine

HRID 891555ノート

反応式

HRID 891555 の反応式
[C:1]([C:4]1[N:5]=[C:6]([N:9]2[CH2:12][CH:11](OS(C)(=O)=O)[CH2:10]2)[S:7][CH:8]=1)(=[O:3])[NH2:2].[C:18]([O-:21])(=[S:20])[CH3:19].[K+]>CN(C)C=O>[C:18]([S:20][CH:11]1[CH2:10][N:9]([C:6]2[S:7][CH:8]=[C:4]([C:1](=[O:3])[NH2:2])[N:5]=2)[CH2:12]1)(=[O:21])[CH3:19]

参加物

4

反応物 2

HCID 222429891-(4-Carbamoyl-1,3-thiazol-2-yl)-3-methanesulfonyloxyazetidineHCID 23670855Potassium ethanethioate

生成物 1

HCID 222428523-Acetylthio-1-(4-carbamoyl-1,3-thiazol-2-yl)azetidine収率 70%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

反応条件

温度
80 °C

実験手順

To a solution of 1-(4-carbamoyl-1,3-thiazol-2-yl)-3-methanesulfonyloxyazetidine (3.04 g, 11.0 mmol) (obtained as described in Reference Example 3(3)) in dimethylformamide (152 ml) was added potassium thioacetate (7.5 g, 65.8 mmol) at room temperature. The mixture was stirred in an oil bath (80° C.) for 10 hours. 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 magnesium sulfate, filtered and concentrated under reduced pressure. The residue was purified by chromatography on a silica gel column using ethyl acetate→4% methanol in ethyl acetate as the eluant to afford 3-acetylthio-1-(4-carbamoyl-1,3-thiazol-2-yl)azetidine (1.97 g, yield 70%) as a pale brown solid.

後処理

  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 magnesium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. customThe residue was purified by chromatography on a silica gel column

出典と根拠

ORDレコード
ord-5857c53155824a2682e6748fe64956de
出典データセット
uspto-grants-2006_02
特許番号
US07001897B2

反応ノート

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