Cesium carbonate → (3R,5S)-N-(2-[(2,3-Difluorobenzyl)thio]-6-methoxypyrimidin-4-yl)-3,5-dimethylpiperazine-1-sulfonamide

HRID 1025007Notes

Reaction equation

HRID 1025007 reaction equation
[CH3:1][C@H:2]1[NH:7][C@@H:6]([CH3:8])[CH2:5][N:4]([S:9]([NH2:12])(=[O:11])=[O:10])[CH2:3]1.C1(P(C2CCCCC2)C2C=CC=CC=2C2C(C(C)C)=CC(C(C)C)=CC=2C(C)C)CCCCC1.C(=O)([O-])[O-].[Cs+].[Cs+].Cl[C:54]1[CH:59]=[C:58]([O:60][CH3:61])[N:57]=[C:56]([S:62][CH2:63][C:64]2[CH:69]=[CH:68][CH:67]=[C:66]([F:70])[C:65]=2[F:71])[N:55]=1.[Cl-].[NH4+]>O1CCOCC1.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.CCOC(C)=O>[F:71][C:65]1[C:66]([F:70])=[CH:67][CH:68]=[CH:69][C:64]=1[CH2:63][S:62][C:56]1[N:55]=[C:54]([NH:12][S:9]([N:4]2[CH2:3][C@H:2]([CH3:1])[NH:7][C@H:6]([CH3:8])[CH2:5]2)(=[O:10])=[O:11])[CH:59]=[C:58]([O:60][CH3:61])[N:57]=1

Participants

10

Reactant 5

HCID 10796Cesium carbonateHCID 25517Ammonium ChlorideHCID 111557942-Dicyclohexylphosphino-2',4',6'-triisoprophylbiphenylHCID 53628381(3R,5S)-3,5-dimethylpiperazine-1-sulfonamideHCID 866198774-Chloro-2-([(2,3-difluorophenyl)methyl]thio]-6-methoxypyrimidine2×

Product 1

HCID 59558797(3R,5S)-N-(2-[(2,3-Difluorobenzyl)thio]-6-methoxypyrimidin-4-yl)-3,5-dimethylpiperazine-1-sulfonamide

Reagents, catalysts & solvents 4

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

Conditions

Temperature
100 °C

Procedure

A mixture of (3R,5S)-3,5-dimethylpiperazine-1-sulfonamide (the product of example 72, 0.26 g), tris(dibenzylideneacetone)-dipalladium (0) (61 mg), 2-dicyclohexylphosphino-2′,4′,6′-tri-isopropyl-1,1′-biphenyl (XPHOS) (32 mg), cesium carbonate (0.32 g) and 4-chloro-2-[[(2,3-difluorophenyl)methyl]thio]-6-methoxypyrimidine (the product of example 35 step i, 0.20 g) in anhydrous dioxane (8 ml) was heated at reflux in a microwave at 100° C., 300 W, open vessel with cooling for 15 min. Saturated aqueous ammonium chloride (5 ml) and EtOAc (Snail) were added, followed by H2O. The layers were separated and the organic layer extracted with H2O (×3). The organic layer was discarded and the combined aqueous extracts exhaustively extracted with further EtOAc. These extracts were combined, washed with saturated aqueous sodium chloride, dried with sodium sulfate, filtered and evaporated. The resulting solid was washed with H2O to afford the title compound as a white solid. Yield: 0.111 g

Workup

  1. temperaturewas heated
  2. temperature300 W, open vessel with cooling for 15 min
  3. customThe layers were separated
  4. extractionthe organic layer extracted with H2O (×3)
  5. extractionthe combined aqueous extracts exhaustively extracted with further EtOAc
  6. washwashed with saturated aqueous sodium chloride
  7. dry with materialdried with sodium sulfate
  8. filtrationfiltered
  9. customevaporated
  10. washThe resulting solid was washed with H2O

Sources & evidence

ORD record
ord-a5d55ae530d843efb1cbf27eb03c677d
Source dataset
uspto-grants-2014_05
Patent number
US08722883B2

Reaction notes

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