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Cesium carbonate → 4-(4-((6-fluoroquinolin-2-yl)methoxy)phenyl)-2,2-dimethyl-5-(pyridin-4-yl) furan-3(2H)-one

HRID 1258348
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HRID 1258348 반응식
Br[C:2]1[C:3](=[O:15])[C:4]([CH3:14])([CH3:13])[O:5][C:6]=1[C:7]1[CH:12]=[CH:11][N:10]=[CH:9][CH:8]=1.[F:16][C:17]1[CH:18]=[C:19]2[C:24](=[CH:25][CH:26]=1)[N:23]=[C:22]([CH2:27][O:28][C:29]1[CH:34]=[CH:33][C:32](B3OC(C)(C)C(C)(C)O3)=[CH:31][CH:30]=1)[CH:21]=[CH:20]2.C([O-])([O-])=O.[Cs+].[Cs+]>C1(C)C=CC=CC=1.O.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[F:16][C:17]1[CH:18]=[C:19]2[C:24](=[CH:25][CH:26]=1)[N:23]=[C:22]([CH2:27][O:28][C:29]1[CH:30]=[CH:31][C:32]([C:2]3[C:3](=[O:15])[C:4]([CH3:14])([CH3:13])[O:5][C:6]=3[C:7]3[CH:12]=[CH:11][N:10]=[CH:9][CH:8]=3)=[CH:33][CH:34]=1)[CH:21]=[CH:20]2
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참가 물질

7

반응물 3

HCID 10796Cesium carbonateHCID 593547756-Fluoro-2-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)quinolineHCID 593548244-bromo-2,2-dimethyl-5-(pyridin-4-yl)furan-3(2H)-one

생성물 1

HCID 593548234-(4-((6-fluoroquinolin-2-yl)methoxy)phenyl)-2,2-dimethyl-5-(pyridin-4-yl) furan-3(2H)-one수율 25%

시약·촉매·용매 3

HCID 44119782
Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)
촉매
HCID 962Water용매
HCID 1140Toluene용매

실험 절차

A mixture of 4-bromo-2,2-dimethyl-5-(pyridin-4-yl)furan-3(2H)-one (0.085 g, 0.32 mmol), 6-Fluoro-2-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)quinoline (0.12 g, 0.32 mmol), and Cs2CO3 (0.52 g, 1.58 mmol) in toluene (5 mL) and water (2 mL) was degassed, added Pd(dppf)Cl2 (0.052 g, 0.06 mmol) under an inert atmosphere and degassed again. Then the reaction was refluxed for 2 h. The reaction mixture was filtered through a pad of Celite®, the filtrate was diluted with EtOAc (30 mL), washed with water (20 mL), brine (20 mL), dried over Na2SO4, filtered and concentrated in vacuo to obtain the crude product. The crude material was purified via silica gel column chromatography to afford 4-(4-((6-fluoroquinolin-2-yl)methoxy)phenyl)-2,2-dimethyl-5-(pyridin-4-yl)furan-3(2H)-one (35 mg, 25%) as a pale yellow solid. 1H NMR (500 MHz, d6-DMSO): δ 8.71 (d, J=8.5 Hz, 2 H), 8.42 (t, J=7.9 Hz, 1 H), 8.1 (t, J=8.4 Hz, 1 H), 7.70-7.61 (m, 3H), 7.44 (d, J=8.5 Hz, 2 H), 7.18 (d, J=7.4 Hz, 2 H), 7.11 (d, J=7.5 Hz, 2 H), 5.40 (s, 2 H), 1.44 (s, 6 H). MS: [M+H]: m/z=441.1. HPLC: 90.1% (RT-2.39 min), Column: Acquity BEH—C-18, 50×2.1 mm, 1.7 um. Mobile Phase: 0.025% TFA in Water (A), ACN (B), Flow rate: 0.5 ml/min (Gradient).

후처리

  1. customwas degassed
  2. customdegassed again
  3. temperatureThen the reaction was refluxed for 2 h
  4. filtrationThe reaction mixture was filtered through a pad of Celite®
  5. additionthe filtrate was diluted with EtOAc (30 mL)
  6. washwashed with water (20 mL), brine (20 mL)
  7. dry with materialdried over Na2SO4
  8. filtrationfiltered
  9. concentrationconcentrated in vacuo
  10. customto obtain the crude product
  11. customThe crude material was purified via silica gel column chromatography

출처 및 근거

ORD 기록
ord-3c9a29da53a843919c495a199fa3d593
출처 데이터셋
uspto-grants-2013_06
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08466148B2

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