2,6-Dichloro-3-nitrotoluene → 2,4-Dichloro-m-toluidine

HRID 348066

反応式

HRID 348066 の反応式
Cl[Sn]Cl.O.[Cl:5][C:6]1[C:11]([N+:12]([O-])=O)=[CH:10][CH:9]=[C:8]([Cl:15])[C:7]=1[CH3:16]>C(O)C>[Cl:5][C:6]1[C:11]([NH2:12])=[CH:10][CH:9]=[C:8]([Cl:15])[C:7]=1[CH3:16]

参加物

4

反応物 2

HCID 971552,6-Dichloro-3-nitrotolueneHCID 43835034Tin dichloride dihydrate

生成物 1

HCID 882822,4-Dichloro-m-toluidine収率 99.4%

試薬・触媒・溶媒 1

HCID 702Ethanol溶媒2 回

実験手順

To a solution of SnCl2.H2O (140 g, 0.62 mol) in ethanol (350 mL) was added a solution of 2,6-dichloro-3-nitrotoluene (25 g, 0.12 mol) in ethanol (50 mL). The reaction mixture was refluxed for 1 hour. The reaction mixture was concentrated under reduced pressure. The residue was dissolved in water (100 mL), pH was adjusted to approximately pH 12 with 1N NaOH solution and extracted with ethyl acetate. The ethyl acetate layer was washed with brine, dried over sodium sulfate, and concentrated to afford 2,6-dichloro-3-aminotoluene (21 g, 98%); NMR (CDCl3) 2.42 (s, 3), 6.62 (d, 1), 7.14 (d, 1) ppm.

後処理

  1. temperatureThe reaction mixture was refluxed for 1 hour
  2. concentrationThe reaction mixture was concentrated under reduced pressure
  3. dissolutionThe residue was dissolved in water (100 mL)
  4. extractionextracted with ethyl acetate
  5. washThe ethyl acetate layer was washed with brine
  6. dry with materialdried over sodium sulfate
  7. concentrationconcentrated

出典と根拠

ORDレコード
ord-059ce2e0c0144c7f816cb39769fdae6a
出典データセット
uspto-grants-2007_02
特許番号
US07176207B2

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