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

HRID 1880112Notes

Reaction equation

HRID 1880112 reaction equation
C(=O)([O-])[O-].[Cs+].[Cs+].[NH:7]1[C:11]2[CH:12]=[CH:13][CH:14]=[CH:15][C:10]=2[N:9]=[C:8]1[C:16]([C:18]1[CH:23]=[CH:22][C:21]([OH:24])=[CH:20][CH:19]=1)=[O:17].F[C:26]1[C:31]([CH:32]2[CH2:38][CH2:37][CH2:36][C:35](=[O:39])[CH2:34][CH2:33]2)=[CH:30][CH:29]=[CH:28][N:27]=1>CN1C(=O)CCC1>[NH:7]1[C:11]2[CH:12]=[CH:13][CH:14]=[CH:15][C:10]=2[N:9]=[C:8]1[C:16]([C:18]1[CH:23]=[CH:22][C:21]([O:24][C:26]2[C:31]([CH:32]3[CH2:38][CH2:37][CH2:36][C:35](=[O:39])[CH2:34][CH2:33]3)=[CH:30][CH:29]=[CH:28][N:27]=2)=[CH:20][CH:19]=1)=[O:17]

Participants

5

Reactant 3

HCID 10796Cesium carbonateHCID 59326874(1H-benzo[d]imidazol-2-yl)(4-hydroxyphenyl)methanoneHCID 593271094-(2-Fluoropyridin-3-yl)cycloheptanone

Product 1

HCID 593269804-(2-(4-(1H-benzo[d]imidazole-2-carbonyl)phenoxy)pyridin-3-yl)cycloheptanone

Reagents, catalysts & solvents 1

HCID 13387N-methyl-2-pyrrolidoneSolvent

Conditions

Temperature
140 °C

Procedure

A mixture of cesium carbonate (0.34 g, 1.03 mmol), (1H-benzo[d]imidazol-2-yl)(4-hydroxyphenyl)methanone (0.25 g, 1.03 mmol), and 4-(2-fluoropyridin-3-yl)cycloheptanone (0.071 g, 0.343 mmol) in NMP (0.3 mL) under argon was heated to 140° C. for 36 h, then cooled to room temperature. The resulting mixture was partitioned between ethyl acetate and water, the layers were separated, and the organic layer was washed 1N aqueous sodium hydroxide (2×), saturated aqueous sodium chloride (1×), dried over anhydrous magnesium sulfate, filtered, and concentrated in vacuo. The oil was purified by silica gel chromatography to give 4-(2-(4-(1H-benzo[d]imidazole-2-carbonyl)phenoxy)pyridin-3-yl)cycloheptanone. MS (ESI, pos. ion) m/z: 426.1 (M+1). IC50 (uM) +++++.

Workup

  1. temperaturecooled to room temperature
  2. customThe resulting mixture was partitioned between ethyl acetate and water
  3. customthe layers were separated
  4. washthe organic layer was washed 1N aqueous sodium hydroxide (2×), saturated aqueous sodium chloride (1×)
  5. dry with materialdried over anhydrous magnesium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customThe oil was purified by silica gel chromatography

Sources & evidence

ORD record
ord-d8b53125fa964464817b4e8a6bbfb742
Source dataset
uspto-grants-2012_11
Patent number
US08318718B2

Reaction notes

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