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N-Boc-5-bromoindole → 5-[(1-Tert-butoxycarbonyl-2-propyl-pyrrolidin-2-yl)-hydroxy-methyl]-indole-1-carboxylic acid tert-butyl ester

HRID 661559
ノート
印刷プレビュー

反応式

HRID 661559 の反応式
[C:1]([O:5][C:6]([N:8]1[C:16]2[C:11](=[CH:12][C:13](Br)=[CH:14][CH:15]=2)[CH:10]=[CH:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C([Li])(C)(C)C.[C:23]([O:27][C:28]([N:30]1[CH2:34][CH2:33][CH2:32][C:31]1([CH:38]=[O:39])[CH2:35][CH2:36][CH3:37])=[O:29])([CH3:26])([CH3:25])[CH3:24]>CCOCC>[C:1]([O:5][C:6]([N:8]1[C:16]2[C:11](=[CH:12][C:13]([CH:38]([C:31]3([CH2:35][CH2:36][CH3:37])[CH2:32][CH2:33][CH2:34][N:30]3[C:28]([O:27][C:23]([CH3:25])([CH3:24])[CH3:26])=[O:29])[OH:39])=[CH:14][CH:15]=2)[CH:10]=[CH:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

HCID 2728482N-Boc-5-bromoindoleHCID 866208602-Formyl-2-propyl-pyrrolidine-1-carboxylic acid tert-butyl esterHCID 178418306HCID 178418306、化合物

生成物 1

HCID 666875405-[(1-Tert-butoxycarbonyl-2-propyl-pyrrolidin-2-yl)-hydroxy-methyl]-indole-1-carboxylic acid tert-butyl ester収率 43%

試薬・触媒・溶媒 1

HCID 3283Diethyl Ether
溶媒
2 回

実験手順

To a stirred solution of 5-bromo-indole-1-carboxylic acid tert-butyl ester (0.700 g, 2.37 mmol) in ether (20 mL) at −78° C. and under nitrogen was added tert-butyllithium (3.64 mL of 1.43 M solution in pentanes, 5.21 mmol) dropwise. After 30 minutes, a solution of 2-formyl-2-propyl-pyrrolidine-1-carboxylic acid tert-butyl ester (0.569 g, 2.37 mmol) in ether (5 mL) was added to the reaction mixture dropwise. The reaction mixture was stirred for one hour, then quenched by the addition of saturated aqueous NH4Cl, and extracted with EtOAc. The combined organic extracts were washed with saturated aqueous NaHCO3 and brine, then dried (MgSO4), filtered and concentrated in vacuo. Purification by chromatography (silica, 0-60% EtOAc in hexanes) gave 5-[(1-tert-butoxycarbonyl-2-propyl-pyrrolidin-2-yl)-hydroxy-methyl]-indole-1-carboxylic acid tert-butyl ester (0.466 g, 1.02 mmol, 43%) as a yellow oil.

後処理

  1. customquenched by the addition of saturated aqueous NH4Cl
  2. extractionextracted with EtOAc
  3. washThe combined organic extracts were washed with saturated aqueous NaHCO3 and brine
  4. dry with materialdried (MgSO4)
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customPurification by chromatography (silica, 0-60% EtOAc in hexanes)

出典と根拠

ORDレコード
ord-f112b194ae474319ad38af7ed2112dea
出典データセット
uspto-grants-2011_12
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08084623B2

反応ノート

読み込み中…

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