Quinoline → 4-Cyano-3-nitrobenzoic acid

HRID 341890ノート

反応式

HRID 341890 の反応式
Cl[C:2]1[CH:10]=[CH:9][C:5]([C:6]([OH:8])=[O:7])=[CH:4][C:3]=1[N+:11]([O-:13])=[O:12].[N:14]1C2C(=CC=CC=2)C=C[CH:15]=1>Cl.O>[C:15]([C:2]1[CH:10]=[CH:9][C:5]([C:6]([OH:8])=[O:7])=[CH:4][C:3]=1[N+:11]([O-:13])=[O:12])#[N:14]

参加物

5

反応物 2

HCID 7047QuinolineHCID 73204-Chloro-3-nitrobenzoic acid

生成物 1

HCID 221685834-Cyano-3-nitrobenzoic acid収率 48%

試薬・触媒・溶媒 2

HCID 313Hydrochloric Acid溶媒HCID 962Water溶媒

実験手順

4-Chloro-3-nitrobenzoic acid (5.84 g, 29 mM), cuprous cyanide (5.2 g, 58 mM), cuprous chloride (0.96 g, 9.7 mM), and quinoline (6.9 ml, 58 mM) were heated under an argon atmosphere at 180° for 3.5 hours. After cooling, the mixture was dissolved in concentrated hydrochloric acid (60 ml), diluted with water (80 ml), and extracted with ethyl acetate (3×100 ml). The combined organic layers were washed with aqueous NaH22PO4, brine, and dried over MgSO4. Crude product was purified by chromatography on silica, eluting with a mixture of dichloromethane/acetic acid (98:2), to give 4-cyano-3-nitrobenzoic acid (2.65 g, 48%). Nmr (DMSO-d6 : δ 8.31 (d, 1H); 8.41 (dd, 1H); 8.68 (d, 1H).

後処理

  1. temperatureAfter cooling
  2. extractionextracted with ethyl acetate (3×100 ml)
  3. washThe combined organic layers were washed with aqueous NaH22PO4, brine
  4. dry with materialdried over MgSO4
  5. customCrude product was purified by chromatography on silica
  6. washeluting with a mixture of dichloromethane/acetic acid (98:2)

出典と根拠

ORDレコード
ord-875671bd7adb450db171eaf7926be111
出典データセット
uspto-grants-1999_01
特許番号
US05856321

反応ノート

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