Triethylamine → diphenylmethyl 2-[(4S)-4-phenylacetamido-3-oxo-2-isoxazolidinyl]-5-oxo-2,5-dihydro-2-furancarboxylate

HRID 232212노트

반응식

HRID 232212 반응식
[C:1]1([CH2:7][C:8]([NH:10][C@H:11]2[CH2:15][O:14][NH:13][C:12]2=[O:16])=[O:9])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.Cl[C:18]1([C:24]([O:26][CH:27]([C:34]2[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=2)[C:28]2[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=2)=[O:25])[CH:22]=[CH:21][C:20](=[O:23])[O:19]1.C(N(CC)CC)C>ClCCl.C(OCC)(=O)C>[C:1]1([CH2:7][C:8]([NH:10][C@H:11]2[CH2:15][O:14][N:13]([C:18]3([C:24]([O:26][CH:27]([C:34]4[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=4)[C:28]4[CH:29]=[CH:30][CH:31]=[CH:32][CH:33]=4)=[O:25])[CH:22]=[CH:21][C:20](=[O:23])[O:19]3)[C:12]2=[O:16])=[O:9])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

참가 물질

6

반응물 3

HCID 8471TriethylamineHCID 20030875HCID 20030875, 화합물HCID 56633768(4S)-4-phenylacetamido-3-isoxazolidinone

생성물 1

HCID 67902310diphenylmethyl 2-[(4S)-4-phenylacetamido-3-oxo-2-isoxazolidinyl]-5-oxo-2,5-dihydro-2-furancarboxylate수율 71.8%

시약·촉매·용매 2

HCID 6344Dichloromethane용매HCID 8857Ethyl Acetate용매

실험 절차

In 2.5 ml of dichloromethane suspension of 35 mg of (4S)-4-phenylacetamido-3-isoxazolidinone and 50 mg of diphenylmethyl 2-chloro-5-oxo-2,5-dihydro-2-furancarboxylate obtained in Example 49 was added under ice-cooling and stirring, 0.025 ml of triethylamine. The reaction solution was stirred at room temperature for 30 minutes, which was diluted with ethyl acetate, followed by washed with water and drying (Na2SO4). The solvent was evaporated off, and the residue was subjected to a silica gel column chromatography, followed by elution with hexane-ethyl acetate (1:1) to give 56 mg of the subject Compound (51) as colorless crystals. Recryslallization from dichloromethaneethylether afforded colorless prisms, m.p. 168°-169° C. (decomp.).

후처리

  1. additionwas added under ice-
  2. temperaturecooling
  3. stirringThe reaction solution was stirred at room temperature for 30 minutes
  4. washby washed with water
  5. dry with materialdrying (Na2SO4)
  6. customThe solvent was evaporated off
  7. washfollowed by elution with hexane-ethyl acetate (1:1)

출처 및 근거

ORD 기록
ord-b1f80655838d4e0d9bc9002039614732
출처 데이터셋
uspto-grants-1989_07
특허 번호
US04851422

반응 노트

불러오는 중…