Lithium Hydroxide → (S)-1-(3,4,5-trimethoxybenzoyl)-3-(3,4-dichlorophenyl)-3-(2-hydroxyethyl)pyrrolidine

HRID 323219Notes

Reaction equation

HRID 323219 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:27]=[C:28]([O:32][CH3:33])[C:29]=1[O:30][CH3:31])[C:6]([N:8]1[CH2:12][CH2:11][C:10]([C:19]2[CH:24]=[CH:23][C:22]([Cl:25])=[C:21]([Cl:26])[CH:20]=2)([CH2:13][CH2:14][O:15]C(=O)C)[CH2:9]1)=[O:7].[OH-].[Li+]>CO.ClCCl>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:27]=[C:28]([O:32][CH3:33])[C:29]=1[O:30][CH3:31])[C:6]([N:8]1[CH2:12][CH2:11][C@@:10]([C:19]2[CH:24]=[CH:23][C:22]([Cl:25])=[C:21]([Cl:26])[CH:20]=2)([CH2:13][CH2:14][OH:15])[CH2:9]1)=[O:7]

Participants

5

Reactant 2

HCID 3939Lithium HydroxideHCID 184645531-(3,4,5-Trimethoxybenzoyl)-3-(3,4-dichlorophenyl)-3-(2-acetoxyethyl)pyrrolidine

Product 1

HCID 53964965(S)-1-(3,4,5-trimethoxybenzoyl)-3-(3,4-dichlorophenyl)-3-(2-hydroxyethyl)pyrrolidine

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 6344DichloromethaneSolvent

Procedure

Combine (+)-1-(3,4,5-trimethoxybenzoyl)-3-(3,4-dichlorophenyl)-3-(2-acetoxyethyl)pyrrolidine (670 mg, 1.35 mmol) and aqueous lithium hydroxide solution (4.2 mL, 1M) in methanol (15 mL). After 3.5 hours, concentrate in vacuo to give a residue. Dissolve the residue in dichloromethane and extract with 1M hydrochloric acid solution and saturated sodium bicarbonate solution. Dry the organic layer over MgSO4, filter, and concentrate in vacuo to obtain a residue. The residue was dried under high vacuum for 18 hours to give (S)-1-(3,4,5-trimethoxybenzoyl)-3-(3,4-dichlorophenyl)-3-(2-hydroxyethyl)pyrrolidine: Rf=0.11 (silica gel, ethyl acetate).

Workup

  1. concentrationconcentrate in vacuo
  2. customto give a residue
  3. extractionextract with 1M hydrochloric acid solution and saturated sodium bicarbonate solution
  4. dry with materialDry the organic layer over MgSO4
  5. filtrationfilter
  6. concentrationconcentrate in vacuo
  7. customto obtain a residue
  8. customThe residue was dried under high vacuum for 18 hours

Sources & evidence

ORD record
ord-8fe26ab4178b4899a99c17b9cb59a240
Source dataset
uspto-grants-2001_04
Patent number
US06211199B1

Reaction notes

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