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Triethylamine → tert-butyl N-[[4-[5-[6-(4-isopropylsulfonylphenyl)pyrazin-2-yl]isoxazol-3-yl]phenyl]methyl]-N-methyl-carbamate

HRID 522533
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HRID 522533 반응식
C1C(=O)N(Cl)C(=O)C1.[OH:9][N:10]=[CH:11][C:12]1[CH:27]=[CH:26][C:15]([CH2:16][N:17]([CH3:25])[C:18](=[O:24])[O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[CH:14][CH:13]=1.[C:28]([C:30]1[CH:35]=[N:34][CH:33]=[C:32]([C:36]2[CH:41]=[CH:40][C:39]([S:42]([CH:45]([CH3:47])[CH3:46])(=[O:44])=[O:43])=[CH:38][CH:37]=2)[N:31]=1)#[CH:29].CCN(CC)CC>CN(C=O)C.CCOC(C)=O.O>[CH:45]([S:42]([C:39]1[CH:38]=[CH:37][C:36]([C:32]2[N:31]=[C:30]([C:28]3[O:9][N:10]=[C:11]([C:12]4[CH:13]=[CH:14][C:15]([CH2:16][N:17]([CH3:25])[C:18](=[O:24])[O:19][C:20]([CH3:21])([CH3:22])[CH3:23])=[CH:26][CH:27]=4)[CH:29]=3)[CH:35]=[N:34][CH:33]=2)=[CH:41][CH:40]=1)(=[O:43])=[O:44])([CH3:47])[CH3:46]
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HCID 8471TriethylamineHCID 31398ChlorosuccinimideHCID 866651492-Ethynyl-6-(4-(isopropylsulfonyl)phenyl)pyrazineHCID 86690358Tert-butyl 4-((hydroxyimino)methyl)benzyl(methyl)carbamate

생성물 1

HCID 67480464tert-butyl N-[[4-[5-[6-(4-isopropylsulfonylphenyl)pyrazin-2-yl]isoxazol-3-yl]phenyl]methyl]-N-methyl-carbamate

시약·촉매·용매 3

HCID 962Water용매HCID 6228Dimethylformamide용매2회HCID 8857Ethyl Acetate용매

반응 조건

온도
65 °C

실험 절차

NCS (34.97 mg, 0.2619 mmol) was added to a solution of tert-butyl 4-((hydroxyimino)methyl)benzyl(methyl)carbamate (62.93 mg, 0.2381 mmol) in DMF (1 mL) and the mixture heated at 65° C. for 15 minutes. The reaction mixture was cooled to ambient temperature and 2-ethynyl-6-(4-isopropylsulfonylphenyl)pyrazine (75 mg, 0.2619 mmol) and DMF (2 mL) were added followed by the dropwise addition of Et3N (28.91 mg, 39.82 μL, 0.2857 mmol). The mixture was stirred at ambient temperature for 45 minutes then heated to 65° C. for 1 hour. The mixture was cooled to ambient temperature and diluted with EtOAc and water and the layers separated. The aqueous layer was extracted with EtOAc (×2) and the combined organic extracts washed with water (×3), brine, dried (MgSO4) and concentrated in vacuo. The residue was purified by column chromatography (ISCO Companion™, 12 g column, eluting with 0 to 40% EtOAc/Petroleum Ether) to give the sub-title product as a yellow solid. 1H NMR (400.0 MHz, DMSO) d H NMR (400.0 MHz, DMSO) d 9.53 (s, 1H), 9.32 (s, 1H), 8.58 (d, 2H), 8.09 (s, 1H), 8.06 (d, 2H), 8.01 (d, 2H), 7.42 (d, 2H), 4.47 (s, 2H), 3.55 (sept, 1H), 2.82 (s, 3H), 1.46-1.41 (2×s, 9H) and 1.21 (d, 6H) ppm; MS (ES+) 493.2

후처리

  1. temperatureThe reaction mixture was cooled to ambient temperature
  2. temperaturethen heated to 65° C. for 1 hour
  3. temperatureThe mixture was cooled to ambient temperature
  4. customthe layers separated
  5. extractionThe aqueous layer was extracted with EtOAc (×2)
  6. washthe combined organic extracts washed with water (×3), brine
  7. dry with materialdried (MgSO4)
  8. concentrationconcentrated in vacuo
  9. customThe residue was purified by column chromatography (ISCO Companion™, 12 g column, eluting with 0 to 40% EtOAc/Petroleum Ether)

출처 및 근거

ORD 기록
ord-d36ce2cc55ad4198831ee623478d2b0c
출처 데이터셋
uspto-grants-2016_05
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09334244B2

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