Cesium carbonate → 4-(2-(4-(1H-benzo[d]imidazole-2-carbonyl)phenoxy)pyridin-3-yl)cyclohexanone

HRID 410243Notes

Reaction equation

HRID 410243 reaction equation
F[C:2]1[C:7]([CH:8]2[CH2:13][CH2:12][C:11](=[O:14])[CH2:10][CH2:9]2)=[CH:6][CH:5]=[CH:4][N:3]=1.[NH:15]1[C:19]2[CH:20]=[CH:21][CH:22]=[CH:23][C:18]=2[N:17]=[C:16]1[C:24]([C:26]1[CH:31]=[CH:30][C:29]([OH:32])=[CH:28][CH:27]=1)=[O:25].C(=O)([O-])[O-].[Cs+].[Cs+]>CN1C(=O)CCC1.O>[NH:15]1[C:19]2[CH:20]=[CH:21][CH:22]=[CH:23][C:18]=2[N:17]=[C:16]1[C:24]([C:26]1[CH:31]=[CH:30][C:29]([O:32][C:2]2[C:7]([CH:8]3[CH2:13][CH2:12][C:11](=[O:14])[CH2:10][CH2:9]3)=[CH:6][CH:5]=[CH:4][N:3]=2)=[CH:28][CH:27]=1)=[O:25]

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 576067214-(2-Fluoropyridin-3-yl)cyclohexanoneHCID 59326874(1H-benzo[d]imidazol-2-yl)(4-hydroxyphenyl)methanone

Product 1

HCID 593270724-(2-(4-(1H-benzo[d]imidazole-2-carbonyl)phenoxy)pyridin-3-yl)cyclohexanone

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 13387N-methyl-2-pyrrolidoneSolvent

Conditions

Temperature
140 °C

Procedure

4-(2-Fluoropyridin-3-yl)cyclohexanone (0.05 g, 0.26 mmol), (1H-benzo[d]imidazol-2-yl)(4-hydroxyphenyl)methanone (0.19 g, 0.78 mmol), and cesium carbonate (0.25 g, 0.78 mmol) were mixed in NMP (1 mL). The reaction mixture was placed under a nitrogen atmosphere and stirred at 140° C. for 48 h. The reaction mixture was cooled to room temperature, diluted with water, and extracted with EtOAc (3×). The combined organic layers were washed with 1 M aqueous sodium hydroxide, washed with sat. sodium chloride, dried over magnesium sulfate, and concentrated in vacuo. The resulting crude product was partially purified by silica gel chromatography. The impure product was then dissolved in a minimal amount of DCM, and hexanes were added until a precipitate formed. The resulting suspension was partially concentrated and filtered to give 4-(2-(4-(1H-benzo[d]imidazole-2-carbonyl)phenoxy)pyridin-3-yl)cyclohexanone. MS (ESI, pos. ion) m/z: 412.1 (M+1). IC50 (uM) +++++.

Workup

  1. temperatureThe reaction mixture was cooled to room temperature
  2. extractionextracted with EtOAc (3×)
  3. washThe combined organic layers were washed with 1 M aqueous sodium hydroxide
  4. washwashed with sat. sodium chloride
  5. dry with materialdried over magnesium sulfate
  6. concentrationconcentrated in vacuo
  7. customThe resulting crude product was partially purified by silica gel chromatography
  8. dissolutionThe impure product was then dissolved in a minimal amount of DCM, and hexanes
  9. additionwere added until a precipitate
  10. customformed
  11. concentrationThe resulting suspension was partially concentrated
  12. filtrationfiltered

Sources & evidence

ORD record
ord-52a24f66d1514767bac9d8edb2ce5a57
Source dataset
uspto-grants-2014_06
Patent number
US08759532B2

Reaction notes

Loading…