Cesium carbonate → N-[5-(2-fluoro-3-pyridinyl)-2,3-dihydro-1H-inden-2-yl]-2-propanesulfonamide

HRID 2100699

Reaction equation

HRID 2100699 reaction equation
I[C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[CH2:7][CH:6]([NH:11][S:12]([CH:15]([CH3:17])[CH3:16])(=[O:14])=[O:13])[CH2:5]2.C(=O)([O-])[O-].[Cs+].[Cs+].[F:24][C:25]1[C:30](B(O)O)=[CH:29][CH:28]=[CH:27][N:26]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>C([O-])(=O)C.[Pd+2].C([O-])(=O)C.[Pd].O1CCOCC1>[F:24][C:25]1[C:30]([C:2]2[CH:3]=[C:4]3[C:8](=[CH:9][CH:10]=2)[CH2:7][CH:6]([NH:11][S:12]([CH:15]([CH3:17])[CH3:16])(=[O:14])=[O:13])[CH2:5]3)=[CH:29][CH:28]=[CH:27][N:26]=1

Participants

8

Reactant 4

HCID 10796Cesium carbonateHCID 11776TriphenylphosphineHCID 27832702-Fluoropyridine-3-boronic acidHCID 46899809N-(5-iodo-2,3-dihydro-1H-inden-2-yl)-2-propanesulfonamide

Product 1

HCID 11709762N-[5-(2-fluoro-3-pyridinyl)-2,3-dihydro-1H-inden-2-yl]-2-propanesulfonamideYield 37%

Reagents, catalysts & solvents 3

HCID 23938PalladiumCatalystHCID 167845palladium(II) acetateCatalystHCID 312751,4-DioxaneSolvent

Procedure

A mixture of Intermediate 2 (65 mg, 0.18 mmol) and cesium carbonate (1.5 eq, 88 mg, 0.27 mmol) in a 3:1 mixture of 1,4-dioxan:water (4 ml) was degassed with argon for 5 minutes. Then the mixture was added to (2-fluoro-3-pyridinyl)boronic acid (1.1 eq, 28 mg, 0.20 mmol, Asymchem International Inc.). Palladium acetate (2 mg, 0.01 mmol—alternatively, solid supported palladium may be used), and triphenylphosphine (9 mg, 0.03 mmol) were then added and the whole mixture stirred at reflux for 16 h. The reaction mixture was allowed to cool and partitioned between ethyl acetate (10 ml) and water (10 ml). The organic layer was separated, dried and evaporated. The resulting product was purified using mass directed preparative HPLC to give the title compound (22 mg, 37%).

Workup

  1. customwater (4 ml) was degassed with argon for 5 minutes
  2. additionwere then added
  3. temperatureat reflux for 16 h
  4. temperatureto cool
  5. custompartitioned between ethyl acetate (10 ml) and water (10 ml)
  6. customThe organic layer was separated
  7. customdried
  8. customevaporated
  9. customThe resulting product was purified

Sources & evidence

ORD record
ord-6e6c4d9543bf4da5846922de8f093690
Source dataset
uspto-grants-2009_08
Patent number
US07572819B2

Linked notes

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