Water → tert-butyl N-cyclopropylmethyl-N-[7-(2-methoxy-4,6-dimethylphenyl)-2-(methylsulfanyl)pyrazolo[1,5-a]pyridin-3-yl]carbamate

HRID 1865010Notes

Reaction equation

HRID 1865010 reaction equation
[CH3:1][O:2][C:3]1[CH:8]=[C:7]([CH3:9])[CH:6]=[C:5]([CH3:10])[C:4]=1[C:11]1[N:16]2[N:17]=[C:18]([S:28][CH3:29])[C:19]([NH:20][C:21](=[O:27])[O:22][C:23]([CH3:26])([CH3:25])[CH3:24])=[C:15]2[CH:14]=[CH:13][CH:12]=1.[H-].[Na+].Br[CH2:33][CH:34]1[CH2:36][CH2:35]1.O>CN(C)C=O.C(OCC)(=O)C>[CH:34]1([CH2:33][N:20]([C:19]2[C:18]([S:28][CH3:29])=[N:17][N:16]3[C:11]([C:4]4[C:5]([CH3:10])=[CH:6][C:7]([CH3:9])=[CH:8][C:3]=4[O:2][CH3:1])=[CH:12][CH:13]=[CH:14][C:15]=23)[C:21](=[O:27])[O:22][C:23]([CH3:25])([CH3:24])[CH3:26])[CH2:36][CH2:35]1

Participants

7

Reactant 4

HCID 962WaterHCID 24758Sodium hydrideHCID 81503BromomethylcyclopropaneHCID 21984503tert-Butyl N-[7-(2-methoxy-4,6-dimethylphenyl)-2-(methylsulfanyl)pyrazolo[1,5-a]pyridin-3-yl]carbamate

Product 1

HCID 21984731tert-butyl N-cyclopropylmethyl-N-[7-(2-methoxy-4,6-dimethylphenyl)-2-(methylsulfanyl)pyrazolo[1,5-a]pyridin-3-yl]carbamate

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
40 °C

Procedure

After dissolving tert-butyl N-[7-(2-methoxy-4,6-dimethylphenyl)-2-(methylsulfanyl)pyrazolo[1,5-a]pyridin-3-yl]carbamate (400 mg) in N,N-dimethylformamide (5 mL), sodium hydride (60%, 58 mg) was added while cooling on ice, and then (bromomethyl)cyclopropane (111 μL) was added and the mixture was stirred for 1 hour at 40° C. Water was added to the reaction mixture, extraction was performed with ethyl acetate and the extract washed with brine. After drying the obtained organic layer over anhydrous magnesium sulfate and filtering it, the solvent was concentrated under reduced pressure to obtain crude tert-butyl N-cyclopropylmethyl-N-[7-(2-methoxy-4,6-dimethylphenyl)-2-(methylsulfanyl)pyrazolo[1,5-a]pyridin-3-yl]carbamate. This was dissolved in ethyl acetate (10 mL) without purification, a 4 N hydrochloric acid/ethyl acetate solution (20 mL) was added, and the mixture was stirred at 40° C. for 1 hour. The reaction mixture was neutralized with 5 N aqueous sodium hydroxide while cooling on ice, and then extraction was performed with ethyl acetate and the organic layer was washed with brine. After drying over anhydrous magnesium sulfate and filtration, the solvent was distilled off under reduced pressure to obtain the title compound (368 mg) as a yellow oil.

Workup

  1. additionwas added
  2. temperaturewhile cooling on ice
  3. washthe extract washed with brine
  4. dry with materialAfter drying the obtained organic layer over anhydrous magnesium sulfate
  5. filtrationfiltering it
  6. concentrationthe solvent was concentrated under reduced pressure

Sources & evidence

ORD record
ord-51fcdd5a9963405ca4958af7d9d2ffba
Source dataset
uspto-grants-2009_12
Patent number
US07625925B2

Reaction notes

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