Potassium Carbonate → Ethyl 2-(1-((tert-butoxycarbonyl)amino)cyclopropanecarbonyl)-4-(3-(cyclopropylamino)-6-fluoro-2-methylquinoxalin-5-yl)-4-oxobutanoate

HRID 1056134노트

반응식

HRID 1056134 반응식
Br[CH2:2][C:3]([C:5]1[C:14]([F:15])=[CH:13][CH:12]=[C:11]2[C:6]=1[N:7]=[C:8]([NH:17][CH:18]1[CH2:20][CH2:19]1)[C:9]([CH3:16])=[N:10]2)=[O:4].[C:21]([O:25][C:26]([NH:28][C:29]1([C:32](=[O:39])[CH2:33][C:34]([O:36][CH2:37][CH3:38])=[O:35])[CH2:31][CH2:30]1)=[O:27])([CH3:24])([CH3:23])[CH3:22].C([O-])([O-])=O.[K+].[K+]>CN(C=O)C.C([O-])(O)=O.[Na+].C(Cl)(Cl)Cl>[C:21]([O:25][C:26]([NH:28][C:29]1([C:32]([CH:33]([CH2:2][C:3]([C:5]2[C:14]([F:15])=[CH:13][CH:12]=[C:11]3[C:6]=2[N:7]=[C:8]([NH:17][CH:18]2[CH2:20][CH2:19]2)[C:9]([CH3:16])=[N:10]3)=[O:4])[C:34]([O:36][CH2:37][CH3:38])=[O:35])=[O:39])[CH2:31][CH2:30]1)=[O:27])([CH3:24])([CH3:23])[CH3:22]

참가 물질

7

반응물 3

HCID 11430Potassium CarbonateHCID 89781999Ethyl 3-(1-{[(tert-butoxy)carbonyl]amino}cyclopropyl)-3-oxopropanoateHCID 897821632-Bromo-1-(3-(cyclopropylamino)-6-fluoro-2-methylquinoxalin-5-yl)ethanone

생성물 1

HCID 118512012Ethyl 2-(1-((tert-butoxycarbonyl)amino)cyclopropanecarbonyl)-4-(3-(cyclopropylamino)-6-fluoro-2-methylquinoxalin-5-yl)-4-oxobutanoate수율 37.2%

시약·촉매·용매 3

HCID 6212Chloroform용매HCID 6228Dimethylformamide용매HCID 516892Sodium Bicarbonate용매

실험 절차

At RT, to a mixture of 2-bromo-1-(3-(cyclopropylamino)-6-fluoro-2-methylquinoxalin-5-yl)ethanone (283c) (1.18 g, 3.49 mmol) and ethyl 3-(1-((tert-butoxycarbonyl)amino)cyclopropyl)-3-oxopropanoate (604) (1.14 g, 4.19 mmol) dissolved in DMF (10.26 mL) was added K2CO3 (1.21 g, 8.72 mmol). The overall mixture was stirred overnight. The mixture was diluted with saturated NaHCO3 (100 mL) and CHCl3 (100 mL). The layers were separated and the aq. layer was extracted with CHCl3 (3×). The combined organic extracts were dried over Na2SO4, filtered and concentrated in vacuo. The crude material was purified by chromatography through an Interchim puriFlash UP (25 micron) pre-packed silica-gel column (80 grams), eluting with a gradient of 0-30% EtOAc in DCM, to provide ethyl 2-(1-((tert-butoxycarbonyl)amino)cyclopropanecarbonyl)-4-(3-(cyclopropylamino)-6-fluoro-2-methylquinoxalin-5-yl)-4-oxobutanoate (0.69 g, 1.30 mmol, 37% yield) as a yellow oil. The yellow oil was put into a sealed tube with 2:1 mixture of EtOH/AcOH (3 mL) and NH4OAc (Sigma) (0.80 g, 10.5 mmol) was added and the mixture was stirred at 60° C. overnight. The precipitate solid was filtered and washed with Et2O (3×2 mL) to give ethyl 2-(1-((tert-butoxycarbonyl)amino)cyclopropyl)-5-(3-(cyclopropylamino)-6-fluoro-2-methylquinoxalin-5-yl)-1H-pyrrole-3-carboxylate (0.41 g, 23% yield) as a yellow solid. m/z (ESI, +ve) 510 (M+H).

후처리

  1. customThe layers were separated
  2. extractionthe aq. layer was extracted with CHCl3 (3×)
  3. dry with materialThe combined organic extracts were dried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customThe crude material was purified by chromatography through an Interchim puriFlash UP (25 micron) pre-packed silica-gel column (80 grams)
  7. washeluting with a gradient of 0-30% EtOAc in DCM

출처 및 근거

ORD 기록
ord-a5deaca978bf467ea9b5a1aed13c4c97
출처 데이터셋
uspto-grants-2016_07
특허 번호
US09394297B2

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