methyl 1H-pyrrole-3-carboxylate → Methyl 5-(4-chlorophenylthio)pyrrole-3-carboxylate

HRID 1703253ノート

反応式

HRID 1703253 の反応式
[NH:1]1[CH:5]=[CH:4][C:3]([C:6]([O:8][CH3:9])=[O:7])=[CH:2]1.[Cl:10][C:11]1[CH:16]=[CH:15][C:14]([S:17]Cl)=[CH:13][CH:12]=1.C(Cl)Cl>CCOCC>[Cl:10][C:11]1[CH:16]=[CH:15][C:14]([S:17][C:5]2[NH:1][CH:2]=[C:3]([C:6]([O:8][CH3:9])=[O:7])[CH:4]=2)=[CH:13][CH:12]=1

参加物

4

反応物 2

HCID 12361759methyl 1H-pyrrole-3-carboxylateHCID 20523678HCID 20523678、化合物

生成物 1

HCID 12897034Methyl 5-(4-chlorophenylthio)pyrrole-3-carboxylate収率 26.1%

試薬・触媒・溶媒 1

HCID 3283Diethyl Ether溶媒

実験手順

Methyl pyrrole-3-carboxylate (2.5 g., 20 mmole) was dissolved in 35 ml. of methylene chloride p-Chlorobenzenesulfenyl chloride (4.0 g., 22 mmoles) was added dropwise over approximately 2 minutes, and the reaction mixture was stirred at room temperature for 1 hour. Two volumes of ether were added, the mixture extracted twice with 20 ml. portions of water and the organic layer evaporated in vacuo. The resulting oil was chromatographed on 100 g. of silica gel with approximately 25 ml. fractions of the ethyl acetate-1/hexane-7 eluant collected. Fractions 19 to 36 were combined and concentrated to yield methyl 5-(4-chlorophenylthio)pyrrole-3-carboxylate (1.4 g., m.p. 122°-124° C.).

後処理

  1. extractionthe mixture extracted twice with 20 ml
  2. customportions of water and the organic layer evaporated in vacuo
  3. customThe resulting oil was chromatographed on 100 g
  4. customfractions of the ethyl acetate-1/hexane-7 eluant collected
  5. concentrationconcentrated

出典と根拠

ORDレコード
ord-94d68ddc730c4e41875af506340de2b7
出典データセット
uspto-grants-1982_09
特許番号
US04351843

反応ノート

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