Hydrochloric Acid → [2-Chloro-5-phenyl-1-(phenylsulfonyl)-1H-pyrrol-3-yl]methanol

HRID 554294ノート

反応式

HRID 554294 の反応式
[Cl:1][C:2]1[N:3]([S:18]([C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)(=[O:20])=[O:19])[C:4]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)=[CH:5][C:6]=1[C:7](OCC)=[O:8].[H-].C([Al+]CC(C)C)C(C)C.Cl>O1CCCC1.C1(C)C=CC=CC=1>[Cl:1][C:2]1[N:3]([S:18]([C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)(=[O:20])=[O:19])[C:4]([C:12]2[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=2)=[CH:5][C:6]=1[CH2:7][OH:8]

参加物

6

反応物 3

HCID 313Hydrochloric AcidHCID 21225700DiisobutylaluminumhydrideHCID 66924662Ethyl 2-chloro-5-phenyl-1-(phenylsulfonyl)-1H-pyrrole-3-carboxylate

生成物 1

HCID 66924752[2-Chloro-5-phenyl-1-(phenylsulfonyl)-1H-pyrrol-3-yl]methanol収率 78%

試薬・触媒・溶媒 2

HCID 1140Toluene溶媒HCID 8028Tetrahydrofuran溶媒

反応条件

温度
-70 °C

実験手順

A solution (30 mL) of ethyl 2-chloro-5-phenyl-1-(phenylsulfonyl)-1H-pyrrole-3-carboxylate (1.27 g) in tetrahydrofuran was cooled to −70° C., a 1.5 mol/L solution (7.6 mL) of diisobutylaluminum hydride in toluene was added dropwise by small portions. The mixture was further stirred at −70° C. for 1 hr, 1 mol/l hydrochloric acid (20 mL) was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: hexane-ethyl acetate=7:3→1:1) to give the title compound as pale-red crystals (yield 882 mg, 78%).

後処理

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe extract was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (eluent: hexane-ethyl acetate=7:3→1:1)

出典と根拠

ORDレコード
ord-0b5fb0927674481cb3d251571543d639
出典データセット
uspto-grants-2011_11
特許番号
US08048909B2

反応ノート

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