Cesium carbonate → rac-{1-[({7-[(3-Fluoropyridin-2-yl)methoxy]-2,5-dimethylpyrazolo[1,5-a]pyridin-3-yl}carbonyl)amino]-2-methylpentan-2-yl}carbamic Acid tert-butyl Ester

HRID 1486310Notes

Reaction equation

HRID 1486310 reaction equation
[C:1]([O:5][C:6](=[O:29])[NH:7][C:8]([CH3:28])([CH2:25][CH2:26][CH3:27])[CH2:9][NH:10][C:11]([C:13]1[C:14]([CH3:24])=[N:15][N:16]2[C:21]([OH:22])=[CH:20][C:19]([CH3:23])=[CH:18][C:17]=12)=[O:12])([CH3:4])([CH3:3])[CH3:2].C(=O)([O-])[O-].[Cs+].[Cs+].Br[CH2:37][C:38]1[C:43]([F:44])=[CH:42][CH:41]=[CH:40][N:39]=1>CN(C=O)C>[C:1]([O:5][C:6](=[O:29])[NH:7][C:8]([CH3:28])([CH2:25][CH2:26][CH3:27])[CH2:9][NH:10][C:11]([C:13]1[C:14]([CH3:24])=[N:15][N:16]2[C:21]([O:22][CH2:37][C:38]3[C:43]([F:44])=[CH:42][CH:41]=[CH:40][N:39]=3)=[CH:20][C:19]([CH3:23])=[CH:18][C:17]=12)=[O:12])([CH3:4])([CH3:3])[CH3:2]

Participants

5

Reactant 3

HCID 10796Cesium carbonateHCID 216131732-(Bromomethyl)-3-fluoropyridineHCID 178444850HCID 178444850, compound

Product 1

HCID 117864682rac-{1-[({7-[(3-Fluoropyridin-2-yl)methoxy]-2,5-dimethylpyrazolo[1,5-a]pyridin-3-yl}carbonyl)amino]-2-methylpentan-2-yl}carbamic Acid tert-butyl EsterYield 33%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A solution of 49 mg (0.12 mmol) of rac-[1-{[7-hydroxy-2,5-dimethylpyrazolo[1,5-a]pyridine-3-carbonyl)amino]}-1-methylbutyl)carbamic acid tert-butyl ester (Example 141A) in 2.1 ml of DMF was admixed with 78 mg (0.24 mmol) of caesium carbonate and 69 mg (0.360 mmol) of 2-bromomethyl-3-fluoropyridine (Example 143A). The reaction mixture was stirred at room temperature for 18 hours. The solvent was evaporated off under reduced pressure and the residue was partitioned between dichloromethane and water. The organic phase was removed and concentrated under reduced pressure. The residue was purified by preparative HPLC chromatography (Method 21), which gave 21 mg (33% yield, 96% pure) of the target compound.

Workup

  1. customThe solvent was evaporated off under reduced pressure
  2. customthe residue was partitioned between dichloromethane and water
  3. customThe organic phase was removed
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by preparative HPLC chromatography (Method 21), which
  6. customgave 21 mg (33% yield, 96% pure) of the target compound

Sources & evidence

ORD record
ord-668a8044e64543778e8a3071be19a694
Source dataset
uspto-grants-2016_08
Patent number
US09422285B2

Reaction notes

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