Hexane → 1-(1-benzenesulfonyl-5-methyl-1H-pyrrolo[2,3-b]pyridin-2-yl)-2-cyclopentyl-ethanol

HRID 1515921노트

반응식

HRID 1515921 반응식
[C:1]1([S:7]([N:10]2[C:14]3=[N:15][CH:16]=[C:17]([CH3:19])[CH:18]=[C:13]3[CH:12]=[CH:11]2)(=[O:9])=[O:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[CH2:20]([Li])[CH2:21][CH2:22][CH3:23].[CH3:25][CH2:26][CH2:27]CCC.C1(C=[O:37])CCCC1>O1CCCC1>[C:1]1([S:7]([N:10]2[C:14]3=[N:15][CH:16]=[C:17]([CH3:19])[CH:18]=[C:13]3[CH:12]=[C:11]2[CH:20]([OH:37])[CH2:21][CH:22]2[CH2:23][CH2:27][CH2:26][CH2:25]2)(=[O:9])=[O:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

참가 물질

6

반응물 4

HCID 8058HexaneHCID 70106CyclopentanecarbaldehydeHCID 497590651-(Benzenesulfonyl)-5-methyl-1H-pyrrolo[2,3-b]pyridineHCID 178418339Butyllithium

생성물 1

HCID 672290511-(1-benzenesulfonyl-5-methyl-1H-pyrrolo[2,3-b]pyridin-2-yl)-2-cyclopentyl-ethanol수율 53%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

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온도
-78 °C

실험 절차

To a suspension of 1-benzenesulfonyl-5-methyl-1H-pyrrolo[2,3-b]pyridine (4.2 g, 15.4 mmol) in dry tetrahydrofuran (200 mL) at −78° C. was added a solution of n-butyllithium in n-hexane (2.5 M, 9.3 mL, 23.2 mmol) dropwise. The mixture was stirred at −78° C. for 5 min and then treated with cyclopentanecarbaldehyde (3.45 g, 30.8 mmol) dropwise. The resulting mixture was stirred at −78° C. for 1 h and quenched with brine. The mixture was extracted with ethyl acetate (2×200 mL), washed with brine, dried over anhydrous sodium sulfate and concentrated in vacuo. Purification by flash column chromatography (QingDao silica gel, 200-300 mesh, 60% dichloromethane/hexanes) afforded 1-(1-benzenesulfonyl-5-methyl-1H-pyrrolo[2,3-b]pyridin-2-yl)-2-cyclopentyl-ethanol (3.13 g, 53%): LC/MS m/e calcd for C21H24N2O3S [M+H]+ 385.50, observed 384.9.

후처리

  1. stirringThe resulting mixture was stirred at −78° C. for 1 h
  2. customquenched with brine
  3. extractionThe mixture was extracted with ethyl acetate (2×200 mL)
  4. washwashed with brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. concentrationconcentrated in vacuo
  7. customPurification by flash column chromatography (QingDao silica gel, 200-300 mesh, 60% dichloromethane/hexanes)

출처 및 근거

ORD 기록
ord-7c0988182da649c38441db66e28ac7ef
출처 데이터셋
uspto-grants-2012_07
특허 번호
US08222416B2

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