Oxalic Acid → 3-chloro-N-{[(7S)-3,4-dimethoxybicyclo[4.2.0]octa-1,3,5-trien-7-yl]methyl}-N ethyl-1-propanamine oxalate

HRID 76327Notes

Reaction equation

HRID 76327 reaction equation
[Cl:1][CH2:2][CH2:3][CH2:4][N:5]([CH2:7][C@H:8]1[CH2:15][C:14]2[C:9]1=[CH:10][C:11]([O:18][CH3:19])=[C:12]([O:16][CH3:17])[CH:13]=2)[CH3:6].[C:20]([OH:25])(=[O:24])[C:21]([OH:23])=[O:22]>C(OCC)(=O)C.C(O)C>[C:20]([OH:25])(=[O:24])[C:21]([OH:23])=[O:22].[Cl:1][CH2:2][CH2:3][CH2:4][N:5]([CH2:7][C@H:8]1[CH2:15][C:14]2[C:9]1=[CH:10][C:11]([O:18][CH3:19])=[C:12]([O:16][CH3:17])[CH:13]=2)[CH2:6][CH3:20]

Participants

5

Reactant 2

HCID 971Oxalic AcidHCID 24808562HCID 24808562, compound

Product 1

HCID 866982113-chloro-N-{[(7S)-3,4-dimethoxybicyclo[4.2.0]octa-1,3,5-trien-7-yl]methyl}-N ethyl-1-propanamine oxalateYield 116.6%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 3-chloro-N-{[(7S)-3,4-dimethoxybicyclo[4.2.0]octa-1,3,5-trien-7-yl]methyl}-N-methyl-1-propanamine (19.8 g, 69.8 mmoles) in 60 mL of ethyl acetate heated at reflux there is added a solution of oxalic acid (6.91 g, 76.7 mmoles) in 60 mL of ethanol. Precipitation from the mixture occurs during contact at reflux. After returning to ambient temperature, the mixture is filtered and washed with 20 mL of ethanol to obtain 17.35 g of a brown powder corresponding to the title compound.

Workup

  1. temperatureat reflux there
  2. customPrecipitation from the mixture
  3. temperatureat reflux
  4. customAfter returning to ambient temperature
  5. filtrationthe mixture is filtered
  6. washwashed with 20 mL of ethanol

Sources & evidence

ORD record
ord-247b8774ee9841ea8aa75ebac03459e0
Source dataset
uspto-grants-2014_09
Patent number
US08835627B2

Reaction notes

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