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5-Bromo-1-(triisopropylsilyl)-1H-pyrrolo[2,3-b]pyridine → 2-[hydroxy-(1-triisopropylsilanyl-1H-pyrrolo[2,3-b]pyridin-5-yl)-methyl]-2-propyl-pyrrolidine-1-carboxylic acid tert-butyl ester

HRID 661545
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HRID 661545 반응식
Br[C:2]1[CH:3]=[C:4]2[CH:10]=[CH:9][N:8]([Si:11]([CH:18]([CH3:20])[CH3:19])([CH:15]([CH3:17])[CH3:16])[CH:12]([CH3:14])[CH3:13])[C:5]2=[N:6][CH:7]=1.C([Li])(C)(C)C.[C:26]([O:30][C:31]([N:33]1[CH2:37][CH2:36][CH2:35][C:34]1([CH:41]=[O:42])[CH2:38][CH2:39][CH3:40])=[O:32])([CH3:29])([CH3:28])[CH3:27]>CCOCC>[C:26]([O:30][C:31]([N:33]1[CH2:37][CH2:36][CH2:35][C:34]1([CH:41]([OH:42])[C:2]1[CH:3]=[C:4]2[CH:10]=[CH:9][N:8]([Si:11]([CH:18]([CH3:20])[CH3:19])([CH:15]([CH3:17])[CH3:16])[CH:12]([CH3:14])[CH3:13])[C:5]2=[N:6][CH:7]=1)[CH2:38][CH2:39][CH3:40])=[O:32])([CH3:28])([CH3:29])[CH3:27]
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참가 물질

5

반응물 3

HCID 242292235-Bromo-1-(triisopropylsilyl)-1H-pyrrolo[2,3-b]pyridineHCID 866208602-Formyl-2-propyl-pyrrolidine-1-carboxylic acid tert-butyl esterHCID 178418306HCID 178418306, 화합물

생성물 1

HCID 666875152-[hydroxy-(1-triisopropylsilanyl-1H-pyrrolo[2,3-b]pyridin-5-yl)-methyl]-2-propyl-pyrrolidine-1-carboxylic acid tert-butyl ester수율 67.5%

시약·촉매·용매 1

HCID 3283
Diethyl Ether
용매
2회

실험 절차

To a stirred solution of 5-bromo-1-triisopropylsilanyl-1H-pyrrolo[2,3-b]pyridine (0.587 g, 1.66 mmol) in ether (20 mL) at −78° C. and under nitrogen was added tert-butyllithium (2.30 mL of 1.51 M solution in pentanes, 3.49 mmol) dropwise. After 90 minutes, a solution of 2-formyl-2-propyl-pyrrolidine-1-carboxylic acid tert-butyl ester (0.400 g, 1.66 mmol) in ether (1 mL) was added to the reaction mixture dropwise. After stirring for one hour, the reaction mixture was warmed to ambient temperature over 30 minutes. The reaction mixture was quenched by the addition of saturated aqueous NH4Cl (20 mL) then extracted with EtOAc. The combined extracts were washed with saturated aqueous NaHCO3 and brine, then dried (MgSO4), filtered and concentrated in vacuo to a yellow oil (0.90 g). Purification by chromatography (silica, 5-20% EtOAc in hexanes) gave 2-[hydroxy-(1-triisopropylsilanyl-1H-pyrrolo[2,3-b]pyridin-5-yl)-methyl]-2-propyl-pyrrolidine-1-carboxylic acid tert-butyl ester (0.576 g, 1.12 mmol, 53%) as a colourless gum.

후처리

  1. customThe reaction mixture was quenched by the addition of saturated aqueous NH4Cl (20 mL)
  2. extractionthen extracted with EtOAc
  3. washThe combined extracts were washed with saturated aqueous NaHCO3 and brine
  4. dry with materialdried (MgSO4)
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo to a yellow oil (0.90 g)
  7. customPurification by chromatography (silica, 5-20% EtOAc in hexanes)

출처 및 근거

ORD 기록
ord-17ea5a3024e04f2fa044861d6156a713
출처 데이터셋
uspto-grants-2011_12
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08084623B2

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