Pyridine → (2R,3R,4R,5S,6S)-3,4,5-Tris(benzyloxy)-2-(benzyloxymethyl)-6-(3-(bromomethyl)-4-chlorophenyl)tetrahydro-2H-pyran

HRID 576362노트

반응식

HRID 576362 반응식
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C@H:8]2[C@H:13]([O:14][CH2:15][C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=3)[C@@H:12]([O:22][CH2:23][C:24]3[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=3)[C@H:11]([O:30][CH2:31][C:32]3[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=3)[C@@H:10]([CH2:38][O:39][CH2:40][C:41]3[CH:46]=[CH:45][CH:44]=[CH:43][CH:42]=3)[O:9]2)=[CH:4][C:3]=1[CH2:47]O.P(Br)(Br)[Br:50].N1C=CC=CC=1>CCOCC>[CH2:31]([O:30][C@H:11]1[C@H:12]([O:22][CH2:23][C:24]2[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=2)[C@@H:13]([O:14][CH2:15][C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)[C@H:8]([C:5]2[CH:6]=[CH:7][C:2]([Cl:1])=[C:3]([CH2:47][Br:50])[CH:4]=2)[O:9][C@@H:10]1[CH2:38][O:39][CH2:40][C:41]1[CH:46]=[CH:45][CH:44]=[CH:43][CH:42]=1)[C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1

참가 물질

5

반응물 3

HCID 1049PyridineHCID 24614Phosphorus tribromideHCID 86714065HCID 86714065, 화합물

생성물 1

HCID 86714066(2R,3R,4R,5S,6S)-3,4,5-Tris(benzyloxy)-2-(benzyloxymethyl)-6-(3-(bromomethyl)-4-chlorophenyl)tetrahydro-2H-pyran수율 203.6%

시약·촉매·용매 1

HCID 3283Diethyl Ether용매

실험 절차

To a solution of alcohol 105 (5.33 g, 8.01 mmol) in ether (50 mL) were added phosphorus tribromide (0.26 mL, 2.80 mmol) and catalytic amount of pyridine at 0° C. The mixture was allowed to warm to room temperature and stirred at room temperature for 15 hours. The mixture was extracted with EtOAc/H2O (100 mL/150 mL). The combined organic layer was dried over MgSO4, filtered, and concentrated in vacuo. The residue was purified by silica gel column chromatography to provide the title bromide 106 (4.15 g, 71%).

후처리

  1. extractionThe mixture was extracted with EtOAc/H2O (100 mL/150 mL)
  2. dry with materialThe combined organic layer was dried over MgSO4
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. customThe residue was purified by silica gel column chromatography

출처 및 근거

ORD 기록
ord-95c732a21ada4c67be83f287acc63c40
출처 데이터셋
uspto-grants-2015_05
특허 번호
US09034921B2

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