Phosphorus pentachloride → (2-Methyl-1,3-thiazol-4-yl)methanesulfonyl chloride

HRID 1714523ノート

反応式

HRID 1714523 の反応式
[CH3:1][C:2]1[S:3][CH:4]=[C:5]([CH2:7][S:8]([O-:11])(=O)=[O:9])[N:6]=1.[Na+].P(Cl)(Cl)(Cl)(Cl)[Cl:14]>P(Cl)(Cl)(Cl)=O>[CH3:1][C:2]1[S:3][CH:4]=[C:5]([CH2:7][S:8]([Cl:14])(=[O:11])=[O:9])[N:6]=1

参加物

4

反応物 2

HCID 24819Phosphorus pentachlorideHCID 59464713Sodium (2-methylthiazol-4-yl)methanesulfonate

生成物 1

HCID 59464691(2-Methyl-1,3-thiazol-4-yl)methanesulfonyl chloride収率 27%

試薬・触媒・溶媒 1

HCID 24813Phosphorus oxychloride溶媒

反応条件

温度
50 °C

実験手順

Sodium (2-methylthiazol-4-yl)methanesulfonate (357 mg, 1.66 mmol) is dissolved in phosphorous oxychloride (6 mL) and is treated with phosphorous pentachloride (345 mg, 1.66 mmol). The reaction mixture is stirred at 50° C. for 3 hours, then allowed to cool to room temperature. The solvent is removed under reduced pressure and the residue is re-dissolved in CH2Cl2 (40 mL) and is washed with sat. NaHCO3 and brine. The organic layer is dried over MgSO4, filtered, and the solvent removed in vacuo to afford 0.095 g of the desired product as a brown oil. LC/MS ESI+ 211 (M+1). Intermediates are obtained in sufficient purity to be carried forward according to Scheme IX without the need for further purification.

後処理

  1. temperatureto cool to room temperature
  2. customThe solvent is removed under reduced pressure
  3. dissolutionthe residue is re-dissolved in CH2Cl2 (40 mL)
  4. washis washed with sat. NaHCO3 and brine
  5. dry with materialThe organic layer is dried over MgSO4
  6. filtrationfiltered
  7. customthe solvent removed in vacuo

出典と根拠

ORDレコード
ord-bdc2d7bf3864415181e0c6eef775c1a7
出典データセット
uspto-grants-2010_09
特許番号
US07795444B2

反応ノート

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