Cesium carbonate → HCID 66582534, compound

HRID 1972542Notes

Reaction equation

HRID 1972542 reaction equation
CS(O[CH2:6][C@H:7]1[CH2:12][N:11]([S:13]([C:16]2[S:17][CH:18]=[CH:19][CH:20]=2)(=[O:15])=[O:14])[CH2:10][CH2:9][N:8]1[C:21]1[CH:26]=[CH:25][C:24]([C:27]([OH:33])([CH3:32])[C:28]([F:31])([F:30])[F:29])=[CH:23][CH:22]=1)(=O)=O.[N:34]1[CH:39]=[CH:38][N:37]=[C:36]2[NH:40][CH:41]=[CH:42][C:35]=12.C(=O)([O-])[O-].[Cs+].[Cs+]>C(#N)C.O>[N:34]1[CH:39]=[CH:38][N:37]=[C:36]2[N:40]([CH2:6][C@H:7]3[CH2:12][N:11]([S:13]([C:16]4[S:17][CH:18]=[CH:19][CH:20]=4)(=[O:15])=[O:14])[CH2:10][CH2:9][N:8]3[C:21]3[CH:22]=[CH:23][C:24]([C:27]([OH:33])([CH3:32])[C:28]([F:30])([F:31])[F:29])=[CH:25][CH:26]=3)[CH:41]=[CH:42][C:35]=12

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 53708035H-Pyrrolo[2,3-b]pyrazineHCID 86670301((2R)-4-(2-thiophenylsulfonyl)-1-(4-(2,2,2-trifluoro-1-hydroxy-1-methylethyl)phenyl)-2-piperazinyl)methyl methanesulfonate2×

Product 1

HCID 66582534HCID 66582534, compoundYield 72.5%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6342AcetonitrileSolvent

Conditions

Temperature
80 °C

Procedure

To a 50-mL round-bottomed flask was added ((2R)-4-(thiophen-2-ylsulfonyl)-1-(4-(1,1,1-trifluoro-2-hydroxypropan-2-yl)phenyl)piperazin-2-yl)methyl methanesulfonate (50 mg, 0.095 mmol, Intermediate B), 5H-pyrrolo[2,3-b]pyrazine (17 mg, 0.142 mmol, ARK Pharm., Libertyville, Ill.) and cesium carbonate (62 mg, 0.19 mmol) in acetonitrile (2 mL). The reaction mixture was stirred at 80° C. for 18 h. The mixture was allowed to cool to room temperature. The reaction mixture was diluted with water (10 mL) and extracted with EtOAc (2×40 mL). The organic extract was washed with saturated NaCl (10 mL) and dried over Na2SO4. The solution was filtered and concentrated in vacuo to give the crude material as an off-white glass. The crude product was purified by silica gel chromatography, eluting with 100% EtOAc to give 2-(4-((S)-2-((5H-pyrrolo[2,3-b]pyrazin-5-yl)methyl)-4-(thiophen-2-ylsulfonyl)piperazin-1-yl)phenyl)-1,1,1-trifluoro-2-propanol (38 mg) as a white solid.

Workup

  1. temperatureto cool to room temperature
  2. extractionextracted with EtOAc (2×40 mL)
  3. extractionThe organic extract
  4. washwas washed with saturated NaCl (10 mL)
  5. dry with materialdried over Na2SO4
  6. filtrationThe solution was filtered
  7. concentrationconcentrated in vacuo
  8. customto give the crude material as an off-white glass
  9. customThe crude product was purified by silica gel chromatography
  10. washeluting with 100% EtOAc

Sources & evidence

ORD record
ord-5ff75a5f47a34107814c3a1fe09bdc8d
Source dataset
uspto-grants-2013_04
Patent number
US08431563B2

Reaction notes

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