Sodium Carbonate → methyl 4-[(5E)-5-(6-fluoro-2-oxo-1,2-dihydro-3H-indol-3-ylidene)-2,2-dimethyl-2,5-dihydrofuran-3-yl]benzoate

HRID 2196138Notes

Reaction equation

HRID 2196138 reaction equation
O1CCOCC1.Br[C:8]1[C:12]([CH3:14])([CH3:13])[O:11]/[C:10](=[C:15]2/[C:16](=[O:25])[NH:17][C:18]3[C:23]/2=[CH:22][CH:21]=[C:20]([F:24])[CH:19]=3)/[CH:9]=1.[CH3:26][O:27][C:28]([C:30]1[CH:35]=[CH:34][C:33](B(O)O)=[CH:32][CH:31]=1)=[O:29].C([O-])([O-])=O.[Na+].[Na+]>Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.O>[F:24][C:20]1[CH:19]=[C:18]2[C:23](/[C:15](=[C:10]3/[CH:9]=[C:8]([C:33]4[CH:34]=[CH:35][C:30]([C:28]([O:27][CH3:26])=[O:29])=[CH:31][CH:32]=4)[C:12]([CH3:14])([CH3:13])[O:11]/3)/[C:16](=[O:25])[NH:17]2)=[CH:22][CH:21]=1

Participants

7

Reactant 4

HCID 10340Sodium CarbonateHCID 312751,4-DioxaneHCID 27343694-Methoxycarbonylphenylboronic acidHCID 58926029(3E)-3-(4-bromo-5,5-dimethylfuran-2(5H)-ylidene)-6-fluoro-1,3-dihydro-2H-indol-2-one

Product 1

HCID 58926389methyl 4-[(5E)-5-(6-fluoro-2-oxo-1,2-dihydro-3H-indol-3-ylidene)-2,2-dimethyl-2,5-dihydrofuran-3-yl]benzoate

Reagents, catalysts & solvents 2

HCID 178418476HCID 178418476, compoundCatalystHCID 962WaterSolvent

Conditions

Temperature
80 °C

Procedure

To 30 ml, of 1,4-dioxane, was added the following reagents: (3E)-3-(4-bromo-5,5-dimethylfuran-2(5H)-ylidene)-6-fluoro-1,3-dihydro-2H-indol-2-one (500 mg, 1.54 mmol), 4-methoxycarbonylphenylboronic acid (333 mg, 1.85 mmol), PdCl2(PPh3)2 (54 mg, 0.077 mmol), 1M Na2CO3 aqueous solution (6.2 mL, 6.2 mmol). The mixture was heated at 80° C. under N2 for 1 hour, cooled to room temperature and poured into 200 mL of water. The brown precipitates were filtered, washed with water and dried to give the crude product. Purification through silica gel column with 1-5% MeOH/CHCl3 led to methyl 4-[(5E)-5-(6-fluoro-2-oxo-1,2-dihydro-3H-indol-3-ylidene)-2,2-dimethyl-2,5-dihydrofuran-3-yl]benzoate as orange/red solid. Yield: 500 mg, 86%.

Workup

  1. temperaturecooled to room temperature
  2. customThe brown precipitates
  3. filtrationwere filtered
  4. washwashed with water
  5. customdried

Sources & evidence

ORD record
ord-193f53ac26af4aa88d3e23a971cf130d
Source dataset
uspto-grants-2012_12
Patent number
US08338415B2

Reaction notes

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