Acetic Acid → trans-1-Benzyl-3-hydroxy-4-methoxypyrrolidine

HRID 981071Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 981071
[CH2:1]([N:8]1CC2[CH:10]([O:11]2)[CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:14][O-].[Na+].[C:17]([OH:20])(=O)[CH3:18]>CO>[CH2:1]([N:8]1[CH2:18][C@@H:17]([O:20][CH3:14])[C@H:10]([OH:11])[CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Komponenten

5

Edukt 3

HCID 176Acetic AcidHCID 98153703-Benzyl-6-oxa-3-azabicyclo(3.1.0)hexaneHCID 10942334Sodium Methoxide

Produkt 1

HCID 15069965trans-1-Benzyl-3-hydroxy-4-methoxypyrrolidine

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 887MethanolLösungsmittel

Versuchsvorschrift

34,9 g (0.2 mol) of 3-benzyl-6-oxa-3-azabicyclo[3.1.0]-hexane (U.S. Pat. No. 4,254,135) are heated with 3.6 g (20 mmol) of sodium methylate solution (30% strength) at 120° C. in 200 ml of absolute methanol in an autoclave for 10 hours. After cooling, the mixture is neutralized with 1.2 g (20 mmol) of acetic acid and the solvent is removed on a rotary evaporator. The residue is taken up in tetrahydrofuran and the sodium acetate is filtered off. The filtrate is concentrated and the residue is distilled.

Aufarbeitung

  1. temperatureAfter cooling
  2. customthe solvent is removed on a rotary evaporator
  3. filtrationthe sodium acetate is filtered off
  4. concentrationThe filtrate is concentrated
  5. distillationthe residue is distilled

Quellen und Nachweise

ORD-Eintrag
ord-ec84cea7a1794c7eb87ff7d58c2fb1a2
Quelldatensatz
uspto-grants-1991_02
Patentnummer
US04990517

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