MX167836B - Mejoras en el procedimiento de reduccion de becham - Google Patents
Mejoras en el procedimiento de reduccion de bechamInfo
- Publication number
- MX167836B MX167836B MX004051A MX405186A MX167836B MX 167836 B MX167836 B MX 167836B MX 004051 A MX004051 A MX 004051A MX 405186 A MX405186 A MX 405186A MX 167836 B MX167836 B MX 167836B
- Authority
- MX
- Mexico
- Prior art keywords
- reduction
- becham
- reduction procedure
- acidic medium
- acid
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
- C07C309/01—Sulfonic acids
- C07C309/28—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
- C07C309/45—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton
- C07C309/46—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton having the sulfo groups bound to carbon atoms of non-condensed six-membered aromatic rings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
La presente invención se refiere a mejoras en el procedimiento de reducción de Bechamp del ácido 4,4'-dinitroestilben-2,2'-disulfónico a ácido 4,4'-diaminoestilben-2,2'disulfónico mediante reducción con fierro metálico en un medio ácido, la mejora caracterizada porque comprende conducir la reducción en un medio ácido que consiste esencialmente de 0.02 a 0.27 por ciento de ácido acético y de 0.17 a 1.4 por ciento de ácido sulfúrico, en agua.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US78788385A | 1985-10-16 | 1985-10-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
MX167836B true MX167836B (es) | 1993-04-15 |
Family
ID=25142817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX004051A MX167836B (es) | 1985-10-16 | 1986-10-16 | Mejoras en el procedimiento de reduccion de becham |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0221021B1 (es) |
JP (1) | JPS6296687A (es) |
CA (1) | CA1277678C (es) |
DE (1) | DE3666810D1 (es) |
MX (1) | MX167836B (es) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8814003D0 (en) * | 1988-06-14 | 1988-07-20 | Kodak Ltd | Method for reducing aromatic nitro groups |
US5021132A (en) * | 1990-08-07 | 1991-06-04 | Sandoz Ltd. | Electrochemical process for preparing 4,4'-dinitrostilbene-2,2'-disulfonic acid and the salts thereof |
DK0498095T3 (da) * | 1991-02-05 | 1995-06-19 | Merrell Dow Pharma | Sulfoniske stilbenderivater til behandling af virussygdomme |
ES2115756T3 (es) * | 1992-02-20 | 1998-07-01 | Merrell Pharma Inc | Derivados de acido sulfonico utilizados en el tratamiento de enfermedades virales. |
CN115850126A (zh) * | 2022-09-13 | 2023-03-28 | 河北三川化工有限公司 | 一种连续法dsd酸的制备方法及其应用 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2534176C3 (de) * | 1975-07-31 | 1987-06-19 | Ciba-Geigy Ag, Basel | Halb-kontinuierliches Verfahren zur Herstellung von aromatischen Aminoverbindungen |
DE2930754C2 (de) * | 1979-07-28 | 1982-10-14 | Bayer Ag, 5090 Leverkusen | Verfahren zur Herstellung von p-Aminophenol |
-
1986
- 1986-10-10 EP EP86810451A patent/EP0221021B1/en not_active Expired
- 1986-10-10 DE DE8686810451T patent/DE3666810D1/de not_active Expired
- 1986-10-16 MX MX004051A patent/MX167836B/es unknown
- 1986-10-16 CA CA000520593A patent/CA1277678C/en not_active Expired - Lifetime
- 1986-10-16 JP JP61244298A patent/JPS6296687A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
EP0221021B1 (en) | 1989-11-08 |
JPS6296687A (ja) | 1987-05-06 |
CA1277678C (en) | 1990-12-11 |
EP0221021A1 (en) | 1987-05-06 |
DE3666810D1 (en) | 1989-12-14 |
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