Methanol → (Racemic)-1-[4-(3-Hydroxy-1-pyrrolidinyl)-2-butynyl]-2-pyrrolidinone

HRID 1710133Notes

Reaction equation

HRID 1710133 reaction equation
C([O:4][CH:5]1[CH2:9][CH2:8][N:7]([CH2:10][C:11]#[C:12][CH2:13][N:14]2[CH2:18][CH2:17][CH2:16][C:15]2=[O:19])[CH2:6]1)(=O)C.C(=O)([O-])[O-].[Na+].[Na+].CO>ClCCl>[OH:4][CH:5]1[CH2:9][CH2:8][N:7]([CH2:10][C:11]#[C:12][CH2:13][N:14]2[CH2:18][CH2:17][CH2:16][C:15]2=[O:19])[CH2:6]1

Participants

5

Reactant 3

HCID 887MethanolHCID 10340Sodium CarbonateHCID 15046672(Racemic)-1-[4-[3-(acetyloxy)-1-pyrrolidinyl]-2-butynyl]-2-pyrrolidinone

Product 1

HCID 15046679(Racemic)-1-[4-(3-Hydroxy-1-pyrrolidinyl)-2-butynyl]-2-pyrrolidinoneYield 69.9%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A mixture of 800 mg of (racemic)-1-[4-[3-(acetyloxy)-1-pyrrolidinyl]-2-butynyl]-2-pyrrolidinone, 595 mg of sodium carbonate and 40 ml of methanol was stirred overnight. An equal volume of dichloromethane was added and this mixture was filtered. The filtrate was concentrated and the residue was diluted with dichloromethane, filtered and concentrated in vacuo. The residue was purified by chromatography (alumina), giving 470 mg of the desired product as a pale yellow oil.

Workup

  1. filtrationthis mixture was filtered
  2. concentrationThe filtrate was concentrated
  3. additionthe residue was diluted with dichloromethane
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customThe residue was purified by chromatography (alumina)

Sources & evidence

ORD record
ord-fe2f6379f5db4e6f8f5e06fcd7245f3f
Source dataset
uspto-grants-1990_08
Patent number
US04952600

Reaction notes

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