D-phenylalanine hydrochloride → D-Phenylalanine

HRID 613797

Reaktionsgleichung

Reaktionsgleichung von HRID 613797
Cl.[NH2:2][C@@H:3]([C:11]([OH:13])=[O:12])[CH2:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1>O>[NH2:2][C@@H:3]([C:11]([OH:13])=[O:12])[CH2:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1

Komponenten

3

Edukt 1

HCID 13000988D-phenylalanine hydrochloride

Produkt 1

HCID 71567D-Phenylalanine

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

The D-phenylalanine hydrochloride having an optical purity of 99.2% which was obtained in Example 8 (74.8 mmol) was dissolved in 70 ml of pure water at 30° C., and the solution was neutralized to a pH of about 5.5 with a 20% NaOH aqueous solution for crystallization. The slurry containing the precipitated crystals was cooled to room temperature, followed by filtration by suction to give 61.4 mmol of D-phenylalanine having an optical purity of 99.9%.

Aufarbeitung

  1. customthe solution was neutralized to a pH of about 5.5 with a 20% NaOH aqueous solution for crystallization
  2. additionThe slurry containing the precipitated crystals
  3. filtrationfollowed by filtration by suction

Quellen und Nachweise

ORD-Eintrag
ord-17ee835cd5374a5ba074056d89de49ea
Quelldatensatz
uspto-grants-1999_12
Patentnummer
US06008403

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