Dimethylamine → HCID 57743004, compound

HRID 1924249Notes

Reaction equation

HRID 1924249 reaction equation
Cl[C:2]1[S:3][C:4]([CH2:7][N:8]2[CH2:12][CH:11]([C:13]3[CH:18]=[C:17]([F:19])[CH:16]=[C:15]([F:20])[C:14]=3[F:21])[CH2:10][C:9]2=[O:22])=[CH:5][N:6]=1.[CH3:23][NH:24][CH3:25].O[Li].O>C1COCC1.O>[CH3:23][N:24]([CH3:25])[C:2]1[S:3][C:4]([CH2:7][N:8]2[CH2:12][CH:11]([C:13]3[CH:18]=[C:17]([F:19])[CH:16]=[C:15]([F:20])[C:14]=3[F:21])[CH2:10][C:9]2=[O:22])=[CH:5][N:6]=1

Participants

6

Reactant 3

HCID 674Dimethylamine2×HCID 168937Lithium hydroxide, monohydrateHCID 57742995HCID 57742995, compound

Product 1

HCID 57743004HCID 57743004, compoundYield 32.3%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

In a sealed tube fitted with a magnetic stirrer, 1-[(2-chloro-1,3-thiazol-5-yl)methyl]-4-(2,3,5-trifluorophenyl)pyrrolidin-2-one 250 (0.3 g, 0.87 mmol) is dissolved in a mixture of THF (4 ml) and H2O (0.1 ml). Dimethylamine (0.85 ml, 1.7 mmol) and LiOH.H2O (0.043 g, 1 mmol) are added and the mixture is stirred at room temperature for 12 h and heated at 50° C. overnight. Dimethylamine (3×3.4 mmol, then 1×5.1 mmol) is added after 24 h, 48 h, 72 h and 96 h heating. THF is evaporated, the residue is dissolved in water and CH2Cl2, the pH of the aqueous phase is brought to 9 and the aqueous phase is extracted with CH2Cl2. The combined organic phases are dried over MgSO4, filtered and concentrated. The crude product is purified by chromatography on silicagel and recrystallized from diisopropylether to afford 0.1 g of 1-{[2-(dimethylamino)-1,3-thiazol-5-yl]methyl}-4-(2,3,5-trifluorophenyl)pyrrolidin-2-one 251.

Workup

  1. customIn a sealed tube fitted with a magnetic stirrer
  2. temperatureheated at 50° C. overnight
  3. temperatureheating
  4. customTHF is evaporated
  5. dissolutionthe residue is dissolved in water
  6. extractionthe aqueous phase is extracted with CH2Cl2
  7. dry with materialThe combined organic phases are dried over MgSO4
  8. filtrationfiltered
  9. concentrationconcentrated
  10. customThe crude product is purified by chromatography on silicagel
  11. customrecrystallized from diisopropylether

Sources & evidence

ORD record
ord-ddc8839450e34608b448e5660c7f9dce
Source dataset
uspto-grants-2012_05
Patent number
US08178533B2

Reaction notes

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