Potassium Carbonate → 3-bromo-1-(3-bromomethyl-2-fluorobenzyl)-4-(2,4-difluorobenzyloxy)-1H-pyridin-2-one

HRID 1831930

반응식

HRID 1831930 반응식
[Br:1][C:2]1[C:3](=[O:18])[NH:4][CH:5]=[CH:6][C:7]=1[O:8][CH2:9][C:10]1[CH:15]=[CH:14][C:13]([F:16])=[CH:12][C:11]=1[F:17].C([O-])([O-])=O.[K+].[K+].[Br:25][CH2:26][C:27]1[CH:32]=[CH:31][CH:30]=[C:29]([CH2:33]Br)[C:28]=1[F:35]>CN(C=O)C>[Br:1][C:2]1[C:3](=[O:18])[N:4]([CH2:33][C:29]2[CH:30]=[CH:31][CH:32]=[C:27]([CH2:26][Br:25])[C:28]=2[F:35])[CH:5]=[CH:6][C:7]=1[O:8][CH2:9][C:10]1[CH:15]=[CH:14][C:13]([F:16])=[CH:12][C:11]=1[F:17]

참가 물질

5

반응물 3

HCID 11430Potassium CarbonateHCID 27360031,3-Bis(bromomethyl)-2-fluorobenzeneHCID 220508323-bromo-4-(2,4-difluorobenzyloxy)-1H-pyridin-2-one

생성물 1

HCID 220504863-bromo-1-(3-bromomethyl-2-fluorobenzyl)-4-(2,4-difluorobenzyloxy)-1H-pyridin-2-one수율 49%

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

반응 조건

온도
110 °C

실험 절차

To a solution of 3-bromo-4-(2,4-difluorobenzyloxy)-1H-pyridin-2-one (from Step 3, Example 74) (0.3 g, 0.95 mmol) in DMF (26 mL) was added K2CO3 (0.26 g, 1.9 mmol) and 2,6-bis(bromomethyl)fluorobenzene (1.6 g, 5.7 mmol), and the reaction mixture was stirred at 110° C. for 3 h. The reaction mixture was cooled to room temperature, and the solvent was removed under reduced pressure. The residue was diluted with a 50% aqueous solution of brine, and the aqueous layer was extracted with EtOAc (3×50 mL). The combined organics were washed with water, dried (Na2SO4), filtered, and the solvent was removed under reduced pressure. Purification by flash column chromatography (silica, eluent 99:1 to 95:5 methylene chloride/methanol) afforded 3-bromo-1-(3-bromomethyl-2-fluorobenzyl)-4-(2,4-difluorobenzyloxy)-1H-pyridin-2-one as an off-white solid (0.24 g, 49%): 1H NMR (300 MHz, CDCl3) δ 7.55-7.40 (m, 3H), 7.35-7.25 (m, 1H), 7.10-7.05 (m, 1H), 7.00-6.80 (m, 2H), 6.14 (d, J=6 Hz, 1H), 5.22 (s, 2H), 5.19 (s, 2H), 4.50 (s, 2H).

후처리

  1. temperatureThe reaction mixture was cooled to room temperature
  2. customthe solvent was removed under reduced pressure
  3. additionThe residue was diluted with a 50% aqueous solution of brine
  4. extractionthe aqueous layer was extracted with EtOAc (3×50 mL)
  5. washThe combined organics were washed with water
  6. dry with materialdried (Na2SO4)
  7. filtrationfiltered
  8. customthe solvent was removed under reduced pressure
  9. customPurification by flash column chromatography (silica, eluent 99:1 to 95:5 methylene chloride/methanol)

출처 및 근거

ORD 기록
ord-44c3af60d63e4e86b83f1f367d27e8d4
출처 데이터셋
uspto-grants-2006_06
특허 번호
US07067540B2

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