Dimethyl Sulfoxide → Ethyl 4-(3-dimethylaminopyrrolidin-1-yl)benzoate

HRID 2251293Notes

Reaction equation

HRID 2251293 reaction equation
F[C:2]1[CH:12]=[CH:11][C:5]([C:6]([O:8][CH2:9][CH3:10])=[O:7])=[CH:4][CH:3]=1.[CH3:13][N:14]([CH3:20])[CH:15]1[CH2:19][CH2:18][NH:17][CH2:16]1.C(=O)([O-])[O-].[K+].[K+].CS(C)=O>O>[CH3:13][N:14]([CH3:20])[CH:15]1[CH2:19][CH2:18][N:17]([C:2]2[CH:12]=[CH:11][C:5]([C:6]([O:8][CH2:9][CH3:10])=[O:7])=[CH:4][CH:3]=2)[CH2:16]1

Participants

6

Reactant 4

HCID 679Dimethyl SulfoxideHCID 11430Potassium CarbonateHCID 67976Benzoic acid, 4-fluoro-, ethyl esterHCID 27585193-(Dimethylamino)pyrrolidine

Product 1

HCID 69209289Ethyl 4-(3-dimethylaminopyrrolidin-1-yl)benzoate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
130 °C

Procedure

A mixture of ethyl 4-fluorobenzoate (4.47 g), dimethylpyrrolidin-3-ylamine (3.04 g), potassium carbonate (3.68 g) and dimethyl sulfoxide (20 ml) was heated at 130° C. for 7 hours. After cooling, the mixture was diluted with water and extracted with methyl tert-butyl ether. The organic phase was washed with water, dried over magnesium sulfate, filtered and concentrated. The product with the molecular weight of 262.35 (C15H22N2O2) was obtained in this way; MS (ESI): 263 (M+H+).

Workup

  1. temperatureAfter cooling
  2. extractionextracted with methyl tert-butyl ether
  3. washThe organic phase was washed with water
  4. dry with materialdried over magnesium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe product with the molecular weight of 262.35 (C15H22N2O2) was obtained in this way

Sources & evidence

ORD record
ord-2e0f1b24075b430493da6a6ef4370264
Source dataset
uspto-grants-2008_01
Patent number
US07319108B2

Reaction notes

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