Tert-Butyl nitrite → 2-Methyl-6-nitrothioanisole

HRID 970165

反応式

HRID 970165 の反応式
N(OC(C)(C)C)=O.[CH3:8][C:9]1[CH:15]=[CH:14][CH:13]=[C:12]([N+:16]([O-:18])=[O:17])[C:10]=1N.[CH3:19][S:20]SC>[Cu]>[CH3:8][C:9]1[CH:15]=[CH:14][CH:13]=[C:12]([N+:16]([O-:18])=[O:17])[C:10]=1[S:20][CH3:19]

参加物

5

反応物 3

HCID 10906Tert-Butyl nitriteHCID 112982-Methyl-6-nitroanilineHCID 12232Dimethyl Disulfide2 回

生成物 1

HCID 187572722-Methyl-6-nitrothioanisole

試薬・触媒・溶媒 1

HCID 23978Copper触媒

反応条件

温度
75 °C

実験手順

226 g (1.97 mmol) of tert-butyl nitrite and 100 g of copper powder are initially-charged in 300 ml of dimethyl disulfide, and a solution of 200 g (1.32 mol) of 2-methyl-6-nitroaniline in 700 ml of dimethyl disulfide is added dropwise at 50-55° C. The mixture is then stirred at 75° C. for 8 hours. For work-up, the solid is filtered off with suction and the solution is diluted with methylene chloride and extracted with dilute hydrochloric acid. The organic phase is washed with saturated aqueous NaHCO3 solution, dried over sodium sulfate, filtered off and concentrated using a rotary evaporator. Excess dimethyl disulfide is removed under oil pump vacuum. This gives 271 g (99%) of a dark-red oil, purity according to HPLC 87%.

後処理

  1. filtrationFor work-up, the solid is filtered off with suction
  2. additionthe solution is diluted with methylene chloride
  3. extractionextracted with dilute hydrochloric acid
  4. washThe organic phase is washed with saturated aqueous NaHCO3 solution
  5. dry with materialdried over sodium sulfate
  6. filtrationfiltered off
  7. concentrationconcentrated
  8. customa rotary evaporator
  9. customExcess dimethyl disulfide is removed under oil pump vacuum

出典と根拠

ORDレコード
ord-41db68b6154347438a447213ddb9b14a
出典データセット
uspto-grants-2007_12
特許番号
US07309802B2

関連ノート

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