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

HRID 81377
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HRID 81377 반응식
C(N(CC)CC)C.[C:8]([O:12][C:13]([N:15]([C:23]1[C:28]([C:29]#[CH:30])=[N:27][C:26]([C:31]2[CH:36]=[CH:35][C:34]([S:37]([CH:40]([CH3:42])[CH3:41])(=[O:39])=[O:38])=[CH:33][CH:32]=2)=[CH:25][N:24]=1)[C:16](=[O:22])[O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:14])([CH3:11])([CH3:10])[CH3:9].[Cl:43][CH2:44][C:45]1[CH:54]=[CH:53][C:48]([C:49](Cl)=[N:50][OH:51])=[CH:47][CH:46]=1>C(Cl)Cl>[C:8]([O:12][C:13]([N:15]([C:23]1[C:28]([C:29]2[O:51][N:50]=[C:49]([C:48]3[CH:53]=[CH:54][C:45]([CH2:44][Cl:43])=[CH:46][CH:47]=3)[CH:30]=2)=[N:27][C:26]([C:31]2[CH:32]=[CH:33][C:34]([S:37]([CH:40]([CH3:42])[CH3:41])(=[O:39])=[O:38])=[CH:35][CH:36]=2)=[CH:25][N:24]=1)[C:16](=[O:22])[O:17][C:18]([CH3:20])([CH3:21])[CH3:19])=[O:14])([CH3:9])([CH3:10])[CH3:11]
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참가 물질

5

반응물 3

HCID 8471TriethylamineHCID 59471983N,N-Di(Boc)-3-ethynyl-5-[4-(isopropylsulfonyl)phenyl]pyrazin-2-amineHCID 766866014-(Chloromethyl)-N-hydroxybenzimidoyl chloride

생성물 1

HCID 86680730tert-butyl N-tert-butoxycarbonyl-N-[3-[3-[4-(chloromethyl)phenyl]isoxazol-5-yl]-5-(4-isopropylsulfonylphenyl)pyrazin-2-yl]carbamate수율 83.8%

시약·촉매·용매 1

HCID 6344
Dichloromethane
용매

실험 절차

Triethylamine (899.0 mg, 1.238 mL, 8.884 mmol) was added to a solution of tert-butyl N-tert-butoxycarbonyl-N-[3-ethynyl-5-(4-isopropylsulfonylphenyl)pyrazin-2-yl]carbamate 8 (4.05 g, 8.074 mmol) and 4-(chloromethyl)-N-hydroxy-benzimidoyl chloride (2.063 g, 8.494 mmol) in DCM (12 mL). The mixture was stirred at RT for 22 h then partitioned between DCM and an ice/water solution. The combined organic extract was dried over MgSO4 and concentrated under reduced pressure then purified by chromatography on silica gel (eluent 30-50% EtAc/petrol) yielding tert-butyl N-tert-butoxycarbonyl-N-[3-[3-[4-(chloromethyl)phenyl]isoxazol-5-yl]-5-(4-isopropylsulfonylphenyl)pyrazin-2-yl]carbamate as colourless crystals (4.53 g, 79%). 1H NMR (400 MHz, CDCl3) δ 1.41 (18H, s), 4.66 (2H, s), 7.37 (1H, s), 7.54 (2H, d, J=8.0 Hz), 7.90 (2H, d, J=8.0 Hz), 8.66 (1H, s)

후처리

  1. customthen partitioned between DCM
  2. extractionThe combined organic extract
  3. dry with materialwas dried over MgSO4
  4. concentrationconcentrated under reduced pressure
  5. customthen purified by chromatography on silica gel (eluent 30-50% EtAc/petrol)

출처 및 근거

ORD 기록
ord-8b02f920e68d4b1aa48d8956a4a23089
출처 데이터셋
uspto-grants-2014_09
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08846686B2

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