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3-Nitrobenzoic acid → [(1S)-2-(3,5-dichloro-1-oxidopyridin-1-ium-4-yl)-1-(3,4-dimethoxyphenyl)ethyl]-3-nitrobenzoate

HRID 1529526
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HRID 1529526 반응식
[Cl:1][C:2]1[CH:3]=[N+:4]([O-:22])[CH:5]=[C:6]([Cl:21])[C:7]=1[CH2:8][C@@H:9]([C:11]1[CH:16]=[CH:15][C:14]([O:17][CH3:18])=[C:13]([O:19][CH3:20])[CH:12]=1)[OH:10].[N+:23]([C:26]1[CH:27]=[C:28]([CH:32]=[CH:33][CH:34]=1)[C:29](O)=[O:30])([O-:25])=[O:24].C(N=C=NCCCN(C)C)C>ClCCl.CN(C)C1C=CN=CC=1>[Cl:21][C:6]1[CH:5]=[N+:4]([O-:22])[CH:3]=[C:2]([Cl:1])[C:7]=1[CH2:8][C@H:9]([O:10][C:29](=[O:30])[C:28]1[CH:32]=[CH:33][CH:34]=[C:26]([N+:23]([O-:25])=[O:24])[CH:27]=1)[C:11]1[CH:16]=[CH:15][C:14]([O:17][CH3:18])=[C:13]([O:19][CH3:20])[CH:12]=1
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참가 물질

6

반응물 3

HCID 84973-Nitrobenzoic acidHCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 71092494(S)-3,5-dichloro-4-(2-(3,4-dimethoxyphenyl)-2-hydroxyethyl)pyridine 1-oxide

생성물 1

HCID 86720690[(1S)-2-(3,5-dichloro-1-oxidopyridin-1-ium-4-yl)-1-(3,4-dimethoxyphenyl)ethyl]-3-nitrobenzoate수율 90%

시약·촉매·용매 2

HCID 14284
4-(Dimethylamino)pyridine
촉매
HCID 6344Dichloromethane용매

실험 절차

To a stirred solution of (1S)-2-(3,5-dichloro-1-oxidopyridin-1-ium-4-yl)-1-(3,4-dimethoxyphenyl)ethanol (0.500 g, 1.45 mmol) and 3-nitrobenzoic acid (0.242 g, 1.45 mmol) in dichloromethane (15.0 mL) was added 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (0.560 g, 2.91 mmol) and N,N-dimethylpyridin-4-amine (0.089 g, 0.73 mmol). The reaction was stirred at room temperature for 16 hours. The reaction was quenched by addition of saturated aqueous sodium bicarbonate solution (25.0 mL) and extracted with dichloromethane (×2). The combined organic extracts were dried on magnesium sulphate, filtered and the solvent removed in vacuo to afford a yellow oil. The crude material was purified by silica gel chromatography eluting sequentially with iso-hexane, ethyl acetate and 10% methanol in ethyl acetate to afford the title compound as a yellow solid (0.642 g, 90% yield).

후처리

  1. customThe reaction was quenched by addition of saturated aqueous sodium bicarbonate solution (25.0 mL)
  2. extractionextracted with dichloromethane (×2)
  3. customThe combined organic extracts were dried on magnesium sulphate
  4. filtrationfiltered
  5. customthe solvent removed in vacuo
  6. customto afford a yellow oil
  7. customThe crude material was purified by silica gel chromatography
  8. washeluting sequentially with iso-hexane, ethyl acetate and 10% methanol in ethyl acetate

출처 및 근거

ORD 기록
ord-72e89e8274404237a274b478f2fb78f2
출처 데이터셋
uspto-grants-2015_07
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09090606B2

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