IL42623A - Reduction of zearalenone - Google Patents
Reduction of zearalenoneInfo
- Publication number
- IL42623A IL42623A IL42623A IL4262373A IL42623A IL 42623 A IL42623 A IL 42623A IL 42623 A IL42623 A IL 42623A IL 4262373 A IL4262373 A IL 4262373A IL 42623 A IL42623 A IL 42623A
- Authority
- IL
- Israel
- Prior art keywords
- acid
- solvent
- zearalenone
- weak acid
- weak
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D313/00—Heterocyclic compounds containing rings of more than six members having one oxygen atom as the only ring hetero atom
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1379859 Reduction of zearalenone COMMERCIAL SOLVENTS CORP 2 July 1973 [26 Sept 1972] 31490/73 Heading C2C Zearalenone of formula is converted to a mixture of a major amout of the high boiling-point diastereoisomer and a minor amount of the low boiling-point diastereoisomer of zearalanol of formula by catalytically reducing zearalenone with hydrogen in the presence of a solvent and from 0À001 to 5% (vol.), based on the solvent of a weak acid and a platinum catalyst, said acid having an ionization constant for one hydrogen of from 1 Î 10<SP>-4</SP> to 5 Î 10<SP>-1</SP> in aqueous solution and said acid not being itself reduced to a weaker acid under the reaction conditions. Suitable weak acids are, for example, tartaric acid, phosphoric acid, oxalic acid and citric acid.
[GB1379859A]
Claims (11)
1. method for reducing zearalenone to a mixture of a major ait-mnt of the high melting point diastereoisomer and a minor amount of the low melting point diastereoisomer of zearalanol comprising catalytically reducing zearalenone with hydrogen under reducing conditions in the presence of zearalanol-producing amounts of a weak acid and catalytic amounts of platinum catalyst, said weak acid having a first acid ionization constant of from about 1 x 10~4 to 5 x 10*"1 in aqueous solution and said weak. acid not itself being reduced to a weaker acid under the reducing conditions.
2. The method of claim 1 wherein the reducing conditions include temperatures from. about 15° to 100°C and a hydrogen pressure from about 20 to 1000 psi and the catalyst is employed in a catalyst to zearalenone weight ratio from about 0.001:1 to 1:1.
3. The method of claim 2 wherein the reduction is conducted in the presence of a solvent consisting essentially of a lower alkanol solvent.
4. The method of claim 3 wherein the lower alkanol contains from 1 to 3 carbon atoms and the, solvent contains from about 0.001 to 5 volume percent (based on the solvent) of the weak acid.
5. The method of claim 2 wherein the catalytic reaction is carried out with reducing conditions including temperatures from about 20 to 60 °C and a hydrogen pressure from about 25 to 100 psi. 42623/3
6. The method of claim 3 wherein the solvent contains weak acid in an amount from about 0.01 to 3 volume percent,, based on the volume of the solvent.
7. The method of claim 1 wherein the weak acid has -4 a first acid ionization constant of from about 5 x 10 to 5 x lO**1.
8. The method of claim 2 wherein the weak acid is tartaric acid.
9. The method of claim 2 wherein the weak acid is phosphoric acid.
10. Th method of claim 2 wherein the weak acid is oxalic acid.
11. The method of claim 2 wherein the weak acid is citric acid.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00292449A US3808233A (en) | 1972-09-26 | 1972-09-26 | Zearalenone reduction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL42623A0 IL42623A0 (en) | 1973-08-29 |
| IL42623A true IL42623A (en) | 1976-08-31 |
Family
ID=23124719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL42623A IL42623A (en) | 1972-09-26 | 1973-06-28 | Reduction of zearalenone |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US3808233A (en) |
| AT (1) | AT330377B (en) |
| AU (1) | AU475426B2 (en) |
| BE (1) | BE805261A (en) |
| CA (1) | CA980785A (en) |
| CH (1) | CH587839A5 (en) |
| DE (1) | DE2328605C2 (en) |
| DK (1) | DK130464B (en) |
| ES (1) | ES417199A1 (en) |
| FR (1) | FR2200263B1 (en) |
| GB (1) | GB1379859A (en) |
| IL (1) | IL42623A (en) |
| NL (1) | NL7311613A (en) |
| PH (1) | PH10914A (en) |
| SE (1) | SE383745B (en) |
| ZA (1) | ZA734356B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2009344073B2 (en) | 2009-04-09 | 2013-06-27 | Intervet International B.V. | A process for manufacturing Zeranol |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3697548A (en) * | 1970-04-02 | 1972-10-10 | Commercial Solvents Corp | Zearalenone reduction |
-
1972
- 1972-09-26 US US00292449A patent/US3808233A/en not_active Expired - Lifetime
-
1973
- 1973-06-05 DE DE2328605A patent/DE2328605C2/en not_active Expired
- 1973-06-06 CA CA173,325A patent/CA980785A/en not_active Expired
- 1973-06-12 AT AT511973A patent/AT330377B/en not_active IP Right Cessation
- 1973-06-26 ZA ZA734356A patent/ZA734356B/en unknown
- 1973-06-28 IL IL42623A patent/IL42623A/en unknown
- 1973-06-29 AU AU57512/73A patent/AU475426B2/en not_active Expired
- 1973-07-02 GB GB3149073A patent/GB1379859A/en not_active Expired
- 1973-07-05 CH CH978473A patent/CH587839A5/xx not_active IP Right Cessation
- 1973-07-10 ES ES417199A patent/ES417199A1/en not_active Expired
- 1973-07-17 DK DK394573AA patent/DK130464B/en not_active IP Right Cessation
- 1973-07-18 PH PH14833A patent/PH10914A/en unknown
- 1973-08-02 SE SE7310661A patent/SE383745B/en unknown
- 1973-08-23 NL NL7311613A patent/NL7311613A/xx not_active Application Discontinuation
- 1973-09-25 FR FR7334287A patent/FR2200263B1/fr not_active Expired
- 1973-09-25 BE BE135997A patent/BE805261A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| AT330377B (en) | 1976-06-25 |
| AU475426B2 (en) | 1976-08-19 |
| CA980785A (en) | 1975-12-30 |
| NL7311613A (en) | 1974-03-28 |
| DE2328605A1 (en) | 1974-04-04 |
| SE383745B (en) | 1976-03-29 |
| ZA734356B (en) | 1974-06-26 |
| ATA511973A (en) | 1975-09-15 |
| DE2328605C2 (en) | 1986-07-10 |
| ES417199A1 (en) | 1976-06-01 |
| CH587839A5 (en) | 1977-05-13 |
| DK130464B (en) | 1975-02-24 |
| GB1379859A (en) | 1975-01-08 |
| US3808233A (en) | 1974-04-30 |
| FR2200263B1 (en) | 1978-11-10 |
| FR2200263A1 (en) | 1974-04-19 |
| DK130464C (en) | 1975-07-21 |
| PH10914A (en) | 1977-10-04 |
| AU5751273A (en) | 1975-01-09 |
| IL42623A0 (en) | 1973-08-29 |
| BE805261A (en) | 1974-01-16 |
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