Process for obtaining D,L-homocystine (II)

US4550200A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Michael Karrenbauer · Radolfzell, DE
• Axel Kleemann · Hanau, DE
• Theodor Lussling · Überlingen, DE
• Fritz P. Schafer · Konstanz, DE

Key dates

• Filing date: Mar 15, 1984
• Grant date: Oct 29, 1985
• Expiry date: Mar 15, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C319/12
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

D,L-Homocystine is obtained by introducing molecular oxygen into an aqueous solution of the disodium salt of D,L-homocysteine having a concentration between 0.8 and 1.2 moles/l and an initial pH between 7.0 and 8.0 in the presence of a catalytic amount of iron(III) ions until there is no longer an increase in pH and subsequently adjusting the pH to about 5.3 with stirring.