1,1'-Carbonyldiimidazole → tert-butyl [(1R,2S)-2-ethenyl-1-({[1-(methoxymethyl)cyclopropyl]sulfonyl}carbamoyl)cyclopropyl]carbamate

HRID 522348노트

반응식

HRID 522348 반응식
[C:1]([O:5][C:6]([NH:8][C@:9]1([C:14]([OH:16])=O)[CH2:11][C@H:10]1[CH:12]=[CH2:13])=[O:7])([CH3:4])([CH3:3])[CH3:2].C(N1C=CN=C1)(N1C=CN=C1)=O.[CH3:29][O:30][CH2:31][C:32]1([S:35]([NH2:38])(=[O:37])=[O:36])[CH2:34][CH2:33]1.C1CCN2C(=NCCC2)CC1>C1COCC1>[CH:12]([C@@H:10]1[CH2:11][C@:9]1([NH:8][C:6](=[O:7])[O:5][C:1]([CH3:2])([CH3:3])[CH3:4])[C:14](=[O:16])[NH:38][S:35]([C:32]1([CH2:31][O:30][CH3:29])[CH2:34][CH2:33]1)(=[O:37])=[O:36])=[CH2:13]

참가 물질

6

반응물 4

HCID 682631,1'-CarbonyldiimidazoleHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 10376443(1R,2S)-1-(((1,1-Dimethylethoxy)carbonyl)amino)-2-ethenylcyclopropanecarboxylic acidHCID 224992771-(Methoxymethyl)cyclopropane-1-sulfonamide

생성물 1

HCID 131735528tert-butyl [(1R,2S)-2-ethenyl-1-({[1-(methoxymethyl)cyclopropyl]sulfonyl}carbamoyl)cyclopropyl]carbamate수율 55.2%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매2회

실험 절차

A solution of (1R,2S)-1-[(tert-butoxycarbonyl)amino]-2-ethenylcyclopropanecarboxylic acid (132 mg) in THF (3 mL) was added 1,1′-carbonyldiimidazole (283 mg). The mixture was stirred 4 hours at reflux. The mixture was cooled to room temperature and a solution of 1-(methoxymethyl)cyclopropanesulfonamide (125 mg; Li et al., 2006, Synlett 5:725) and DBU (0.438 mL) in THF (3 mL) was added via cannula. The mixture was stirred for 40 hours at room temperature. The reaction was quenched with 1N HCl and the mixture was extracted twice with ethyl acetate. The combined organic layers were washed with brine, dried over anhydrous magnesium sulfate, filtered and concentrated under reduced pressure. The resulting residue was purified by flash chromatography (ISCO) to give the desired product (120 mg). 1H NMR (400 MHz, CDCl3): 5.71-5.62 (m, 1H), 5.29 (d, 1H), 5.16 (d, 1H), 3.36 (s, 2H), 2.15 (dt, 1H), 1.89 (dd, 1H), 1.75-1.68 (m, 2H), 1.49 (s, 9H), 1.34-1.30 (m, 1H), 1.08-1.03 (m, 2H).

후처리

  1. temperatureat reflux
  2. stirringThe mixture was stirred for 40 hours at room temperature
  3. customThe reaction was quenched with 1N HCl
  4. extractionthe mixture was extracted twice with ethyl acetate
  5. washThe combined organic layers were washed with brine
  6. dry with materialdried over anhydrous magnesium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated under reduced pressure
  9. customThe resulting residue was purified by flash chromatography (ISCO)

출처 및 근거

ORD 기록
ord-fe54b4e0fa1e416c9a39f8dd8e743455
출처 데이터셋
uspto-grants-2016_05
특허 번호
US09328138B2

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