ES2032155A6 - Process for obtaining L-carboxymethyl-L-cysteine from L- cysteine by electrochemical methods - Google Patents
Process for obtaining L-carboxymethyl-L-cysteine from L- cysteine by electrochemical methodsInfo
- Publication number
- ES2032155A6 ES2032155A6 ES9000995A ES9000995A ES2032155A6 ES 2032155 A6 ES2032155 A6 ES 2032155A6 ES 9000995 A ES9000995 A ES 9000995A ES 9000995 A ES9000995 A ES 9000995A ES 2032155 A6 ES2032155 A6 ES 2032155A6
- Authority
- ES
- Spain
- Prior art keywords
- cysteine
- catholyte
- carboxymethyl
- obtaining
- degree
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Process for obtaining L-carboxymethyl-L-cysteine from L- cysteine by electrochemical methods. The compound which is to be obtained corresponds to the structural formula <IMAGE> The process is performed using flat electrodes or electrodes of any other shape in a variable number in each cell, with the anode and cathode of specific materials including lead and graphite, the catholyte and the anolyte being separated by an anion or cation- selective membrane, the catholyte including an aqueous or non-aqueous solution of L-cysteine and the anolyte containing any other salt electrolyte, the catholyte also containing monochloroacetic acid or its salts and the electrolysis being performed at a temperature of between 0 and 90 degree C, at a current density of between 10 mA/cm2 and 2 A/cm2, with the possibility of previously treating the catholyte with activated carbon, at a pH between 2 and 3, leaving it to stand until total precipitation takes place, filtering it and washing it twice with water and drying it in a vacuum at 50 degree C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES9000995A ES2032155A6 (en) | 1990-04-06 | 1990-04-06 | Process for obtaining L-carboxymethyl-L-cysteine from L- cysteine by electrochemical methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES9000995A ES2032155A6 (en) | 1990-04-06 | 1990-04-06 | Process for obtaining L-carboxymethyl-L-cysteine from L- cysteine by electrochemical methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2032155A6 true ES2032155A6 (en) | 1993-01-01 |
Family
ID=8266764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES9000995A Expired - Fee Related ES2032155A6 (en) | 1990-04-06 | 1990-04-06 | Process for obtaining L-carboxymethyl-L-cysteine from L- cysteine by electrochemical methods |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES2032155A6 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996038601A1 (en) * | 1995-06-01 | 1996-12-05 | Derivados Del Etilo, S.A. | Process for producing by electrochemical methods thioethers for pharmaceutical use |
| WO1997042358A1 (en) * | 1996-05-07 | 1997-11-13 | Universidad De Alicante | Process for the electrochemical synthesis of n-acetylcysteine from cystine |
| ES2137105A1 (en) * | 1997-03-20 | 1999-12-01 | Dsm Deretil S A | Process for obtaining N-monosubstituted L-cysteines by electrochemical means |
-
1990
- 1990-04-06 ES ES9000995A patent/ES2032155A6/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996038601A1 (en) * | 1995-06-01 | 1996-12-05 | Derivados Del Etilo, S.A. | Process for producing by electrochemical methods thioethers for pharmaceutical use |
| ES2098191A1 (en) * | 1995-06-01 | 1997-04-16 | Etilo Derivados | Process for producing by electrochemical methods thioethers for pharmaceutical use |
| WO1997042358A1 (en) * | 1996-05-07 | 1997-11-13 | Universidad De Alicante | Process for the electrochemical synthesis of n-acetylcysteine from cystine |
| ES2108654A1 (en) * | 1996-05-07 | 1997-12-16 | Univ Alicante | Process for the electrochemical synthesis of n-acetylcysteine from cystine |
| ES2137105A1 (en) * | 1997-03-20 | 1999-12-01 | Dsm Deretil S A | Process for obtaining N-monosubstituted L-cysteines by electrochemical means |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 20000401 |