ES475546A1 - Procedimiento para la preparacion en dos etapas de acido 2,6-piridin-dicarboxilico - Google Patents
Procedimiento para la preparacion en dos etapas de acido 2,6-piridin-dicarboxilicoInfo
- Publication number
- ES475546A1 ES475546A1 ES475546A ES475546A ES475546A1 ES 475546 A1 ES475546 A1 ES 475546A1 ES 475546 A ES475546 A ES 475546A ES 475546 A ES475546 A ES 475546A ES 475546 A1 ES475546 A1 ES 475546A1
- Authority
- ES
- Spain
- Prior art keywords
- dicarboxylic acid
- pyridin
- preparing
- stage
- stage process
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D213/79—Acids; Esters
- C07D213/803—Processes of preparation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D213/79—Acids; Esters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/582—Recycling of unreacted starting or intermediate materials
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyridine Compounds (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Procedimiento para la preparación en dos etapas del ácido 2,6-piridin-dicarboxílico, basado en la oxidación en ambiente ácido de la 2,6-dimetil-piridina, caracterizado por cuanto el mismo se desarrolla en dos etapas. En la primera etapa (de oxidación adición), se hacen reaccionar en fase homogénea, a una temperatura de 70-115ºC, una solución de 2,6-dimetil-piridina en ácido sulfúrico, de concentración del 50-80%, en peso en cantidad tal que, después de la reacción de oxidación de la 2,6-dimetil-piridina, las mol., de ácido libre sean de 3 a 20 por mol., de ácido dipicolínico formado con una solución de una sal soluble de cromo hexavalente.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT30273/77A IT1089429B (it) | 1977-12-01 | 1977-12-01 | Procedimento in due stadi per preparare acido 2-6-piridin-bicarbossilico |
Publications (1)
Publication Number | Publication Date |
---|---|
ES475546A1 true ES475546A1 (es) | 1979-04-01 |
Family
ID=11229446
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES475546A Expired ES475546A1 (es) | 1977-12-01 | 1978-11-30 | Procedimiento para la preparacion en dos etapas de acido 2,6-piridin-dicarboxilico |
Country Status (12)
Country | Link |
---|---|
US (1) | US4237301A (es) |
JP (1) | JPS5490181A (es) |
AT (1) | AT366668B (es) |
BE (1) | BE872394A (es) |
CA (1) | CA1108617A (es) |
CH (1) | CH640226A5 (es) |
DE (2) | DE2813417C3 (es) |
ES (1) | ES475546A1 (es) |
FR (1) | FR2410650A1 (es) |
GB (1) | GB2009163B (es) |
IL (1) | IL56090A0 (es) |
IT (1) | IT1089429B (es) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4419515A (en) * | 1977-12-01 | 1983-12-06 | Luigi Stoppani S.P.A. | Two stage process for preparing 2,6-pyridinedicarboxylic acid |
US4857231A (en) * | 1988-06-06 | 1989-08-15 | Iowa State University Research Foundation, Inc. | Thermochromic platinum complexes |
CZ291059B6 (cs) * | 1997-03-12 | 2002-12-11 | Lonza Ag | Způsob výroby esterů 2,6-pyridindikarboxylových kyselin |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE741321C (de) * | 1941-02-13 | 1943-11-09 | Ig Farbenindustrie Ag | Verfahren zur Herstellung von Pyridin bzw. Pyridincarbonsaeuren |
FR976594A (fr) * | 1942-04-30 | 1951-03-20 | Ig Farbenindustrie Ag | Procédé de fabrication de pyridine |
US2415147A (en) * | 1942-08-27 | 1947-02-04 | Allied Chem & Dye Corp | Process for oxidation of heterocyclic nitrogen compounds |
US2578672A (en) * | 1945-11-23 | 1951-12-18 | Koppers Co Inc | Picolinic acid recovery |
US3154549A (en) * | 1961-10-23 | 1964-10-27 | Wyandotte Chemicals Corp | Process for the preparation of carboxylic acids |
US3334021A (en) * | 1964-04-09 | 1967-08-01 | Monsanto Co | Process for preparing dipicolinic acid |
US3313821A (en) * | 1964-08-03 | 1967-04-11 | Chemlek Laboratotries Inc | Process for preparing pyridine carboxylic acids from compounds having a pyridine nucleus |
DE2300056A1 (de) | 1973-01-02 | 1974-07-04 | Kali Chemie Pharma Gmbh | Verfahren zur gewinnung von pyridin2,6-dicarbonsaeure auf fermentativem wege |
SU568642A1 (ru) * | 1975-07-11 | 1977-08-15 | Ордена Трудового Красного Знамени Институт Органического Синтеза Ан Латвийской Сср | Способ получени пиридинкарбоновых кислот |
IT1077343B (it) * | 1977-07-18 | 1985-05-04 | Stoppani Luigi Di Stoppani P & | Procedimento di ossidazione altamente selettivo per preparare acidi piridincarbossilici |
-
1977
- 1977-12-01 IT IT30273/77A patent/IT1089429B/it active
-
1978
- 1978-03-29 DE DE2813417A patent/DE2813417C3/de not_active Expired
- 1978-03-29 DE DE2857637A patent/DE2857637C2/de not_active Expired
- 1978-11-22 AT AT0834378A patent/AT366668B/de not_active IP Right Cessation
- 1978-11-23 CA CA316,755A patent/CA1108617A/en not_active Expired
- 1978-11-27 CH CH1214378A patent/CH640226A5/it not_active IP Right Cessation
- 1978-11-30 GB GB7846715A patent/GB2009163B/en not_active Expired
- 1978-11-30 FR FR7833790A patent/FR2410650A1/fr active Granted
- 1978-11-30 IL IL56090A patent/IL56090A0/xx not_active IP Right Cessation
- 1978-11-30 US US05/965,037 patent/US4237301A/en not_active Expired - Lifetime
- 1978-11-30 BE BE2057456A patent/BE872394A/xx not_active IP Right Cessation
- 1978-11-30 JP JP14729678A patent/JPS5490181A/ja active Granted
- 1978-11-30 ES ES475546A patent/ES475546A1/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2410650B1 (es) | 1983-02-11 |
CH640226A5 (it) | 1983-12-30 |
DE2857637C2 (de) | 1986-10-30 |
JPS5490181A (en) | 1979-07-17 |
GB2009163B (en) | 1982-06-30 |
IT1089429B (it) | 1985-06-18 |
DE2813417C3 (de) | 1986-07-10 |
DE2813417B2 (de) | 1981-02-19 |
FR2410650A1 (fr) | 1979-06-29 |
DE2813417A1 (de) | 1979-06-07 |
ATA834378A (de) | 1981-09-15 |
BE872394A (fr) | 1979-03-16 |
AT366668B (de) | 1982-04-26 |
GB2009163A (en) | 1979-06-13 |
US4237301A (en) | 1980-12-02 |
JPS6121470B2 (es) | 1986-05-27 |
CA1108617A (en) | 1981-09-08 |
IL56090A0 (en) | 1979-01-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19970221 |