N-bromobutanimide → 5-(benzo[c][1,2,5]oxadiazol-5-yl)-4-bromo-2,2-dimethylfuran-3(2H)-one

HRID 655440노트

반응식

HRID 655440 반응식
[N:1]1[O:2][N:3]=[C:4]2[CH:9]=[C:8]([C:10]3[O:14][C:13]([CH3:16])([CH3:15])[C:12](=[O:17])[CH:11]=3)[CH:7]=[CH:6][C:5]=12.C1C(=O)N([Br:25])C(=O)C1>C(Cl)(Cl)Cl.C(Cl)Cl>[N:1]1[O:2][N:3]=[C:4]2[CH:9]=[C:8]([C:10]3[O:14][C:13]([CH3:15])([CH3:16])[C:12](=[O:17])[C:11]=3[Br:25])[CH:7]=[CH:6][C:5]=12

참가 물질

5

반응물 2

HCID 67184N-bromobutanimideHCID 593548355-(benzo[c][1,2,5]oxadiazol-5-yl)-2,2-dimethylfuran-3(2H)-one

생성물 1

HCID 593548375-(benzo[c][1,2,5]oxadiazol-5-yl)-4-bromo-2,2-dimethylfuran-3(2H)-one수율 60%

시약·촉매·용매 2

HCID 6212Chloroform용매HCID 6344Dichloromethane용매

실험 절차

To a stirred solution of 5-(benzo[c][1,2,5]oxadiazol-5-yl)-2,2-dimethylfuran-3(2H)-one (0.25 g, 1.086 mmol) in CHCl3 (15 mL), NBS (0.29 g, 1.630 mmol) was added portionwise at RT. The reaction mixture was then stirred for 3 h and diluted with DCM (10 mL). The organic layer was then washed with water (5 mL) and brine (10 mL), dried over Na2SO4, filtered, and then concentrated in vacuo to obtain the crude product. The crude material was purified via silica gel column chromatography to afford 5-(benzo[c][1,2,5]oxadiazol-5-yl)-4-bromo-2,2-dimethylfuran-3(2H)-one (0.2 g, 60%) as a yellow solid.

후처리

  1. washThe organic layer was then washed with water (5 mL) and brine (10 mL)
  2. dry with materialdried over Na2SO4
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. customto obtain the crude product
  6. customThe crude material was purified via silica gel column chromatography

출처 및 근거

ORD 기록
ord-d859e572220c4621a93fcfd720c0a393
출처 데이터셋
uspto-grants-2011_12
특허 번호
US08071595B2

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