Cesium carbonate → HCID 67398963, compound

HRID 70690Notes

Reaction equation

HRID 70690 reaction equation
CC1(C)C(C)(C)OB([C:9]2[CH:10]=[N:11][N:12](C(OC(C)(C)C)=O)[CH:13]=2)O1.O1C=CC=C1P(C1OC=CC=1)C1OC=CC=1.C(=O)([O-])[O-].[Cs+].[Cs+].Br[C:45]1[CH:46]=[CH:47][C:48](/[C:53](/[C:72]2[CH:77]=[CH:76][C:75]([Cl:78])=[CH:74][CH:73]=2)=[CH:54]/[C@@H:55]2[N:59]([CH2:60][C:61]3[CH:66]=[CH:65][C:64]([O:67][CH3:68])=[CH:63][C:62]=3[O:69][CH3:70])[C:58](=[O:71])[CH2:57][CH2:56]2)=[N:49][C:50]=1[O:51][CH3:52]>O1CCOCC1.C(OCC)(=O)C.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].O>[Cl:78][C:75]1[CH:74]=[CH:73][C:72](/[C:53](/[C:48]2[CH:47]=[CH:46][C:45]([C:9]3[CH:13]=[N:12][NH:11][CH:10]=3)=[C:50]([O:51][CH3:52])[N:49]=2)=[CH:54]\[C@@H:55]2[N:59]([CH2:60][C:61]3[CH:66]=[CH:65][C:64]([O:67][CH3:68])=[CH:63][C:62]=3[O:69][CH3:70])[C:58](=[O:71])[CH2:57][CH2:56]2)=[CH:77][CH:76]=1

Participants

9

Reactant 4

HCID 10796Cesium carbonateHCID 521585Tris(furan-2-yl)phosphaneHCID 16217654tert-butyl 4-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole-1-carboxylateHCID 58452298HCID 58452298, compound

Product 1

HCID 67398963HCID 67398963, compoundYield 63%

Reagents, catalysts & solvents 4

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 962WaterSolventHCID 8857Ethyl AcetateSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
80 °C

Procedure

tert-Butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole-1-carboxylate (216 mg), tris(dibenzylideneacetone)dipalladium(0) (33.7 mg), tri(2-furyl)phosphine (51.5 mg) and cesium carbonate (239 mg) were added to a solution of (5R)-5-[(E)-2-(5-bromo-6-methoxypyridin-2-yl)-2-(4-chlorophenyl)ethenyl]-1-(2,4-dimethoxybenzyl)pyrrolidin-2-one obtained in Reference Example 4-43 (200 mg) in 1,4-dioxane (3 mL)-water (1 mL), and the mixture was stirred at an external temperature for 80° C. for three hours. The reaction solution was left to cool, diluted with ethyl acetate and filtered through celite. The filtrate was washed with brine and dried over sodium sulfate. After filtration, the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (hexane:ethyl acetate=9:1→7:3) to give (5R)-5-{(E)-2-(4-chlorophenyl)-2-[6-methoxy-5-(1H-pyrazol-4-yl)pyridin-2-yl]ethenyl}-1-(2,4-dimethoxybenzyl)pyrrolidin-2-one as a colorless oil (125 mg, 63%).

Workup

  1. waitThe reaction solution was left
  2. temperatureto cool
  3. filtrationfiltered through celite
  4. washThe filtrate was washed with brine
  5. dry with materialdried over sodium sulfate
  6. filtrationAfter filtration
  7. customthe solvent was evaporated under reduced pressure
  8. customThe residue was purified by silica gel column chromatography (hexane:ethyl acetate=9:1→7:3)

Sources & evidence

ORD record
ord-c0f7fca6033849a789eacc00b4449c3e
Source dataset
uspto-grants-2014_09
Patent number
US08822503B2

Reaction notes

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