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

HRID 655468Notes

Reaction equation

HRID 655468 reaction equation
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

Participants

7

Reactant 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

Product 1

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

Reagents, catalysts & solvents 3

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 962WaterSolventHCID 1140TolueneSolvent

Procedure

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, 2H), 8.42 (t, J=7.9 Hz, 1H), 8.1 (t, J=8.4 Hz, 1H), 7.70-7.61 (m, 3H), 7.44 (d, J=8.5 Hz, 2H), 7.18 (d, J=7.4 Hz, 2H), 7.11 (d, J=7.5 Hz, 2H), 5.40 (s, 2H), 1.44 (s, 6H). 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).

Workup

  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

Sources & evidence

ORD record
ord-6be563b80790443993705bac4ac9c9cc
Source dataset
uspto-grants-2011_12
Patent number
US08071595B2

Reaction notes

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