Hydrochloric Acid → (+-)-3,4-Dimethoxyamphetamine

HRID 235940

Reaktionsgleichung

Reaktionsgleichung von HRID 235940
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH2:11][C:12](=O)[CH3:13])[CH:6]=[CH:7][C:8]=1[O:9][CH3:10].C([BH3-])#[N:16].[Na+].Cl>CO>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH2:11][CH:12]([NH2:16])[CH3:13])[CH:6]=[CH:7][C:8]=1[O:9][CH3:10]

Komponenten

5

Edukt 3

HCID 313Hydrochloric AcidHCID 698962-Propanone, 1-(3,4-dimethoxyphenyl)-HCID 5003444Sodium cyanoborohydride

Produkt 1

HCID 8423(+-)-3,4-DimethoxyamphetamineAusbeute 96,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 887MethanolLösungsmittel

Versuchsvorschrift

A mixture of 3,4-dimethoxyphenylacetone (51.1 g, 0.26 m) is dissolved in methanol (780 ml), sodium cyanoborohydride (11.3 g, 0.18 m) is added and the mixture is stirred at room temperature for 67 hours. The reaction mixture is adjusted to pH 2 with concentrated HCl and the solvent is evaporated under reduced pressure. The residue is dissolved in H2O (250 ml), the aqueous layer is extracted with ether (3×) and then rendered alkaline with KOH and extracted with CH2Cl2 (3×). After drying, the solvent is evaporated under reduced pressure and the product is distilled at 112°-5°/0.5 mm to yield (VIII) (33.88 g, 67%).

Aufarbeitung

  1. customthe solvent is evaporated under reduced pressure
  2. dissolutionThe residue is dissolved in H2O (250 ml)
  3. extractionthe aqueous layer is extracted with ether (3×)
  4. extractionextracted with CH2Cl2 (3×)
  5. customAfter drying
  6. customthe solvent is evaporated under reduced pressure
  7. distillationthe product is distilled at 112°-5°/0.5 mm

Quellen und Nachweise

ORD-Eintrag
ord-9a258557cbe545718551e7d7ba41fd3c
Quelldatensatz
uspto-grants-1987_02
Patentnummer
US04642311

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