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Dichloromethane → 5-[3,5-Dichloro-4-(1-cyclohexyl-2-oxo-pyrrolidin-3-ylmethyl)-phenyl]-thiophene-2-carboxylic acid methyl ester

HRID 2235326
ノート
印刷プレビュー

反応式

HRID 2235326 の反応式
[CH3:1][O:2][C:3]([C:5]1[S:6][C:7](Br)=[CH:8][CH:9]=1)=[O:4].C([Li])CCC.FC(F)(F)S(O[C:22]1[CH:27]=[C:26]([Cl:28])[C:25]([CH2:29][CH:30]2[CH2:34][CH2:33][N:32]([CH:35]3[CH2:40][CH2:39][CH2:38][CH2:37][CH2:36]3)[C:31]2=[O:41])=[C:24]([Cl:42])[CH:23]=1)(=O)=O.ClCCl>C1COCC1.C(OCC)(=O)C.[Cl-].[Zn+2].[Cl-].C1(P(C2C=CC=CC=2)[C-]2C=CC=C2)C=CC=CC=1.[C-]1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=C1.[Fe+2]>[CH3:1][O:2][C:3]([C:5]1[S:6][C:7]([C:22]2[CH:23]=[C:24]([Cl:42])[C:25]([CH2:29][CH:30]3[CH2:34][CH2:33][N:32]([CH:35]4[CH2:40][CH2:39][CH2:38][CH2:37][CH2:36]4)[C:31]3=[O:41])=[C:26]([Cl:28])[CH:27]=2)=[CH:8][CH:9]=1)=[O:4]
参加物実験手順後処理出典と根拠反応ノート

参加物

9

反応物 4

HCID 6344DichloromethaneHCID 605713Methyl 5-bromothiophene-2-carboxylateHCID 592994213,5-Dichloro-4-((1-cyclohexyl-2-oxopyrrolidin-3-yl)methyl)phenyl trifluoromethanesulfonateHCID 178418339Butyllithium

生成物 1

HCID 592993875-[3,5-Dichloro-4-(1-cyclohexyl-2-oxo-pyrrolidin-3-ylmethyl)-phenyl]-thiophene-2-carboxylic acid methyl ester収率 16.1%

試薬・触媒・溶媒 4

HCID 635956Ferrocene-1,1'-bis-(diphenylphosphine)触媒HCID 3007855Zincchloride触媒HCID 8028Tetrahydrofuran溶媒2 回HCID 8857Ethyl Acetate溶媒

実験手順

To a solution of 5-bromo-thiophene-2-carboxylic acid methyl ester (Preparation 86) (552.5 mg, 2.5 mmol) in 5 mL of THF, add n-butyl lithium (1.6 M, 1,56 mL, 2.5 mmol) at −78° C. and stir at that temperature for 30 min. Add anhydrous zinc chloride (455 mg, 4.0 mmol) and keep in −78° C. for 30 min, and then warm up to room temp. After stirring at room temp for 30 min, add 3,5-dichloro-4-((1-cyclohexyl-2-oxopyrrolidin-3-yl)methyl)phenyl trifluoromethanesulfonate (593 mg, 1.25 mmol). Add 1,1′-bis(diphenylphosphino) ferrocene)dichloroplladium and complex with dichloromethane (102 mg, 0.125 mmol) with 1.0 mL of THF. After heating to reflux for 5 hours. cool the reaction to room temp. Dilute with ethyl acetate, wash with water, separate the organic layer, and dry over anhydrous sodium sulfate. Purify the crude material by flash chromatography on silica gel using hexane:ethyl acetate (10:1.5) as eluent to give 94 mg of the title compound LC/MS (API) m/z: 466.0 (M+1).

後処理

  1. stirringAfter stirring at room temp for 30 min
  2. temperatureAfter heating
  3. temperatureto reflux for 5 hours
  4. temperaturecool
  5. customthe reaction to room temp
  6. washwash with water
  7. customseparate the organic layer
  8. dry with materialdry over anhydrous sodium sulfate
  9. customPurify the crude material by flash chromatography on silica gel

出典と根拠

ORDレコード
ord-a86bd04c3f7e4ca6b7fd29940e934a21
出典データセット
uspto-grants-2010_05
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07713979B2

反応ノート

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