Triethylamine → HCID 67304672, 화합물

HRID 1726681

반응식

HRID 1726681 반응식
[CH2:1]([N:8]([C:14]([O:16][CH2:17][C:18]1[CH:23]=[CH:22][CH:21]=[CH:20]C=1)=[O:15])[CH2:9][CH2:10][C:11]([OH:13])=O)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(N(CC)CC)C.C(Cl)(=O)C(C)(C)C.[Li+].[Cl-].[CH2:40]([C@@H:47]1[CH2:51][O:50][C:49](=[O:52])[NH:48]1)[C:41]1[CH:46]=[CH:45][CH:44]=[CH:43][CH:42]=1>C1COCC1>[C:17]1([O:16][C:14](=[O:15])[N:8]([CH2:1][C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=2)[CH2:9][CH2:10][C:11]([N:48]2[C@H:47]([CH2:40][C:41]3[CH:46]=[CH:45][CH:44]=[CH:43][CH:42]=3)[CH2:51][O:50][C:49]2=[O:52])=[O:13])[CH:18]=[CH:23][CH:22]=[CH:21][CH:20]=1

참가 물질

7

반응물 5

HCID 8471TriethylamineHCID 62493Pivaloyl chlorideHCID 433294Lithium ChlorideHCID 2734969(R)-4-Benzyl-2-oxazolidinoneHCID 15547327N-Benzyl-N-((benzyloxy)carbonyl)-beta-alanine

생성물 1

HCID 67304672HCID 67304672, 화합물

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

반응 조건

온도
-20 °C

실험 절차

To a stirred solution of 3-{benzyl[(benzyloxy)cabonyl]amino}propanoic acid (13.80 g, 44.04 mmol) and triethylamine (18.5 mL, 132.1 mmol) in anhydrous THF (220 mL) at −25° C. was slowly added pivaloyl chloride (6.03 mL, 48.44 mmol) to immediately form a white precipitate. The reaction mixture was stirred at −20° C. for 1 h, prior to the sequential addition of LiCl and (R)-(+)-4-benzyl-2-oxazolidinone. After stirring the reaction mixture at rt for 16 h, the reaction was quenched with saturated aqueous NaHCO3 (80 mL) and water (80 mL). The aqueous phase was extracted twice with ethyl acetate and the combined organic layers were washed with brine, dried over MgSO4, filtered and concentrated under reduced pressure. The residue was purified by Combiflash (20-40% EtOAc/hexane) to give benzyl-{3-[(4R)-benzyl-2-oxo-1,3-oxazolidin-3-yl)-3-oxo-propyl]-carbamic acid phenyl ester as a colorless semi-solid (17.00 g, 82% in yield). MS (ESI): 473.1 (M+H+).

후처리

  1. customat −25° C.
  2. customto immediately form a white precipitate
  3. stirringAfter stirring the reaction mixture at rt for 16 h
  4. customthe reaction was quenched with saturated aqueous NaHCO3 (80 mL) and water (80 mL)
  5. extractionThe aqueous phase was extracted twice with ethyl acetate
  6. washthe combined organic layers were washed with brine
  7. dry with materialdried over MgSO4
  8. filtrationfiltered
  9. concentrationconcentrated under reduced pressure
  10. customThe residue was purified by Combiflash (20-40% EtOAc/hexane)
  11. customto give

출처 및 근거

ORD 기록
ord-59052a83a3b54ab2b24512182a78cf4c
출처 데이터셋
uspto-grants-2009_02
특허 번호
US07491724B2

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