Hydrochloric Acid → Methyl 3-{[2-(dimethylamino)-2-oxoethyl]oxy}benzoate

HRID 1892899Notes

Reaction equation

HRID 1892899 reaction equation
[OH:1][C:2]1[CH:3]=[C:4]([CH:9]=[CH:10][CH:11]=1)[C:5]([O:7][CH3:8])=[O:6].C([O-])([O-])=O.[K+].[K+].Cl[CH2:19][C:20]([N:22]([CH3:24])[CH3:23])=[O:21].Cl>CN(C=O)C>[CH3:23][N:22]([CH3:24])[C:20](=[O:21])[CH2:19][O:1][C:2]1[CH:3]=[C:4]([CH:9]=[CH:10][CH:11]=1)[C:5]([O:7][CH3:8])=[O:6]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 11430Potassium CarbonateHCID 758862-chloro-N,N-dimethylacetamideHCID 88068Methyl 3-Hydroxybenzoate

Product 1

HCID 58054508Methyl 3-{[2-(dimethylamino)-2-oxoethyl]oxy}benzoateYield 94%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A mixture of methyl 3-hydroxybenzoate (Aldrich) (1.52 g, 10 mmol) and K2CO3 (1.38 g, 10 mmol) in DMF (10 mL) was stirred for 1 h. 2-Chloro-N,N-dimethylacetamide (Merck) (1.03 mL, 10 mmol) was added and the mixture was stirred for 1 h at RT and then stood at RT for 6 days. The mixture was then acidified with 2M HCl and extracted with EtOAc. The aqueous layer was extracted twice more with EtOAc and the combined organic solutions were washed with 2M HCl (×3), aq. sat NaHCO3, brine, dried (MgSO4) and evaporated under reduced pressure to give the title compound (2.22 g, 94%) as a white solid. LCMS (System A) RT=0.80 min, 91%, ES+ve m/z 238 (M+H)+.

Workup

  1. stirringthe mixture was stirred for 1 h at RT
  2. waitstood at RT for 6 days
  3. extractionextracted with EtOAc
  4. extractionThe aqueous layer was extracted twice more with EtOAc
  5. washthe combined organic solutions were washed with 2M HCl (×3)
  6. dry with materialdried (MgSO4)
  7. customevaporated under reduced pressure

Sources & evidence

ORD record
ord-02cbb447673f4761b0674c7c2f9a7cae
Source dataset
uspto-grants-2013_08
Patent number
US08507543B2

Reaction notes

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