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Triethylamine → cis-2-[N-(2,3-Dimethoxy-7-nitro-quinoxalin-5-ylmethyl)amino]-cyclohexane-1-carboxylic acid

HRID 1422253
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HRID 1422253 반응식
[NH2:1][C@H:2]1[CH2:7][CH2:6][CH2:5][CH2:4][C@H:3]1[C:8]([OH:10])=[O:9].C(N(CC)CC)C.[CH3:18][O:19][C:20]1[C:29]([O:30][CH3:31])=[N:28][C:27]2[C:26]([CH:32]=O)=[CH:25][C:24]([N+:34]([O-:36])=[O:35])=[CH:23][C:22]=2[N:21]=1.S([O-])([O-])(=O)=O.[Na+].[Na+].[BH4-].[Na+]>ClCCl.C(O)C>[CH3:18][O:19][C:20]1[C:29]([O:30][CH3:31])=[N:28][C:27]2[C:22](=[CH:23][C:24]([N+:34]([O-:36])=[O:35])=[CH:25][C:26]=2[CH2:32][NH:1][C@H:2]2[CH2:7][CH2:6][CH2:5][CH2:4][C@H:3]2[C:8]([OH:10])=[O:9])[N:21]=1
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참가 물질

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반응물 5

HCID 8471TriethylamineHCID 24436Sodium SulfateHCID 2724639(1R,2S)-2-Aminocyclohexane-1-carboxylic acidHCID 4311764Sodium borohydrideHCID 232979852,3-Dimethoxy-7-nitroquinoxaline-5-carbaldehyde

생성물 1

HCID 53824769cis-2-[N-(2,3-Dimethoxy-7-nitro-quinoxalin-5-ylmethyl)amino]-cyclohexane-1-carboxylic acid

시약·촉매·용매 2

HCID 702Ethanol용매2회HCID 6344Dichloromethane용매

실험 절차

105 mg (0.588 mmol) of cis-2-amino-cyclohexanecarboxylic acid and 82 μl (0.588 mmol) of triethylamine are added in succession to a solution of 129 mg (0.490 mmol) of 2,3-dimethoxy-7-nitro-quinoxaline-5-carbaldehyde in 1 ml of dichloromethane and 2 ml of ethanol. After 3 hours' stirring at room temperature, 1 g of anhydrous sodium sulfate is added to the suspension and the mixture is stirred for a further 20 hours at room temperature. The thick suspension is diluted with 0.5 ml of ethanol and 46 mg (1.23 mmol) of sodium borohydride are added. After 3 hours' stirring, there are added 0.5 ml of acetone and 10 minutes later 0.3 ml of acetic acid and filtration is carried out. The filter residue is washed with ethanol and dichloromethane. The filtrate is chromatographed on silica gel first with dichloromethane/ethyl acetate (97:3) and then with dichloromethane/methanol/glacial acetic acid (90:9:1). The title compound is obtained in the form of a white powder.

후처리

  1. stirringthe mixture is stirred for a further 20 hours at room temperature
  2. additionare added
  3. stirringAfter 3 hours' stirring
  4. additionthere are added
  5. filtration0.5 ml of acetone and 10 minutes later 0.3 ml of acetic acid and filtration
  6. washThe filter residue is washed with ethanol and dichloromethane
  7. customThe filtrate is chromatographed on silica gel first with dichloromethane/ethyl acetate (97:3)

출처 및 근거

ORD 기록
ord-1ff17da756e74f698b0149766303ed75
출처 데이터셋
uspto-grants-2000_06
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US06080743

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