Toluene → HCID 68733649, 화합물

HRID 387518노트

반응식

HRID 387518 반응식
C1(C)C=CC=CC=1.[CH2:8]([C@@H:15]1[CH2:19][O:18][C:17](=[O:20])[N:16]1[C:21](=[O:30])[CH2:22][C:23]1[CH:28]=[CH:27][C:26]([Br:29])=[CH:25][CH:24]=1)[C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=1.CCN(C(C)C)C(C)C.CO[CH:42]1[N:46]([C:47]([O:49][C:50]([CH3:53])([CH3:52])[CH3:51])=[O:48])[C:45]([CH3:55])([CH3:54])[CH2:44][CH2:43]1>C(Cl)Cl.Cl[Ti](Cl)(Cl)Cl>[CH2:8]([C@@H:15]1[CH2:19][O:18][C:17](=[O:20])[N:16]1[C:21](=[O:30])[C@@H:22]([C@H:42]1[N:46]([C:47]([O:49][C:50]([CH3:53])([CH3:52])[CH3:51])=[O:48])[C:45]([CH3:55])([CH3:54])[CH2:44][CH2:43]1)[C:23]1[CH:24]=[CH:25][C:26]([Br:29])=[CH:27][CH:28]=1)[C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=1

참가 물질

7

반응물 4

HCID 1140TolueneHCID 81531DiisopropylethylamineHCID 54374212HCID 54374212, 화합물HCID 59564912HCID 59564912, 화합물

생성물 1

HCID 68733649HCID 68733649, 화합물수율 85.1%

시약·촉매·용매 2

HCID 24193Titanium Tetrachloride촉매HCID 6344Dichloromethane용매2회

반응 조건

온도
-78 °C

실험 절차

TiCl4 in toluene (3.52 mL, 3.52 mmol) was added to a solution of (R)-4-benzyl-3-(2-(4-bromophenyl)acetyl)oxazolidin-2-one (1.26 g, 3.35 mmol) in DCM (30 mL) at −78° C. DIEA (0.64 mL, 3.69 mmol) was then added to the cold stirring solution. The reaction was stirred at −78° C. for 15 minutes, followed by the addition of a solution of tert-butyl 5-methoxy-2,2-dimethylpyrrolidine-1-carboxylate (1.00 g, 4.36 mmol, see Example F) in DCM (10 mL). The reaction was then warmed to −10° C. and stirred for 2 hours. The reaction was quenched with a saturated NH4Cl solution (20 mL), and the organic fraction was isolated, dried over sodium sulfate, filtered and concentrated. The resulting residue was purified by column chromatography to give (S)-tert-butyl 5-((R)-2-((R)-4-benzyl-2-oxooxazolidin-3-yl)-1-(4-bromophenyl)-2-oxoethyl)-2,2-dimethylpyrrolidine-1-carboxylate (1.63 g, 85%) as a solid.

후처리

  1. temperatureThe reaction was then warmed to −10° C.
  2. stirringstirred for 2 hours
  3. customThe reaction was quenched with a saturated NH4Cl solution (20 mL)
  4. customthe organic fraction was isolated
  5. dry with materialdried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customThe resulting residue was purified by column chromatography

출처 및 근거

ORD 기록
ord-cf3cf9d6a3d94336816484f8a32dce5a
출처 데이터셋
uspto-grants-2013_02
특허 번호
US08372842B2

반응 노트

불러오는 중…