GB996570A - Purification of bipyridyls - Google Patents
Purification of bipyridylsInfo
- Publication number
- GB996570A GB996570A GB763562A GB763562A GB996570A GB 996570 A GB996570 A GB 996570A GB 763562 A GB763562 A GB 763562A GB 763562 A GB763562 A GB 763562A GB 996570 A GB996570 A GB 996570A
- Authority
- GB
- United Kingdom
- Prior art keywords
- organic solvent
- bipyridyl
- bipyridyls
- water
- purified
- 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
- C07D213/06—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 containing only hydrogen and carbon atoms in addition to the ring nitrogen atom
- C07D213/22—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 containing only hydrogen and carbon atoms in addition to the ring nitrogen atom containing two or more pyridine rings directly linked together, e.g. bipyridyl
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyridine Compounds (AREA)
Abstract
Bipyridyls are purified by contacting an impure bipyridyl with water and a substantially water-immiscible organic solvent and thereafter separating the organic solvent phase which contains the dipyridyl. Preferably the bipyridyl is dissolved in either the water or the organic solvent before they are contacted with each other. The aqueous phase is preferably maintained at a pH in the range 4 to 8, for example by means of a buffer, e.g. sodium formate/formic acid. Suitable organic solvents are, for example, benzene, toluene, xylenes, trimethyl benzenes, petroleum spirit, chlorinated hydrocarbons and mixtures thereof. The process may be carried out batchwise or continuously preferably at a temperature of 40-80 DEG C. The purified bipyridyls may be separated from the organic solvent by evaporation, distillation or by the formation of bipyridyl salts which may be filtered from the solution. Specification 996,569 is referred to.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB763562A GB996570A (en) | 1962-02-27 | 1962-02-27 | Purification of bipyridyls |
DE19631445934 DE1445934C3 (en) | 1962-02-27 | 1963-02-21 | Process for purifying bipyridyls |
CH237563A CH437283A (en) | 1962-02-27 | 1963-02-25 | Process for purifying bipyridyls |
DK86663A DK104845C (en) | 1962-02-27 | 1963-02-25 | Method for purification of bipyridyls. |
BR14723963A BR6347239D0 (en) | 1962-02-27 | 1963-02-27 | BIPYRIDIL PURIFICATION PROCESS |
SE213663A SE324768B (en) | 1962-02-27 | 1963-02-27 | |
AT154763A AT252914B (en) | 1962-02-27 | 1963-02-27 | Process for the purification of dipyridyls |
ES285528A ES285528A1 (en) | 1962-02-27 | 1963-02-27 | Procedure for the purification of organic bases (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB763562A GB996570A (en) | 1962-02-27 | 1962-02-27 | Purification of bipyridyls |
Publications (1)
Publication Number | Publication Date |
---|---|
GB996570A true GB996570A (en) | 1965-06-30 |
Family
ID=9836894
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB763562A Expired GB996570A (en) | 1962-02-27 | 1962-02-27 | Purification of bipyridyls |
Country Status (8)
Country | Link |
---|---|
AT (1) | AT252914B (en) |
BR (1) | BR6347239D0 (en) |
CH (1) | CH437283A (en) |
DE (1) | DE1445934C3 (en) |
DK (1) | DK104845C (en) |
ES (1) | ES285528A1 (en) |
GB (1) | GB996570A (en) |
SE (1) | SE324768B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105218432A (en) * | 2015-09-15 | 2016-01-06 | 南京化学试剂股份有限公司 | A kind of 4, the method for purification of 4 '-dipyridyl |
-
1962
- 1962-02-27 GB GB763562A patent/GB996570A/en not_active Expired
-
1963
- 1963-02-21 DE DE19631445934 patent/DE1445934C3/en not_active Expired
- 1963-02-25 DK DK86663A patent/DK104845C/en active
- 1963-02-25 CH CH237563A patent/CH437283A/en unknown
- 1963-02-27 SE SE213663A patent/SE324768B/xx unknown
- 1963-02-27 BR BR14723963A patent/BR6347239D0/en unknown
- 1963-02-27 AT AT154763A patent/AT252914B/en active
- 1963-02-27 ES ES285528A patent/ES285528A1/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105218432A (en) * | 2015-09-15 | 2016-01-06 | 南京化学试剂股份有限公司 | A kind of 4, the method for purification of 4 '-dipyridyl |
Also Published As
Publication number | Publication date |
---|---|
BR6347239D0 (en) | 1973-12-26 |
ES285528A1 (en) | 1963-08-01 |
CH437283A (en) | 1967-06-15 |
DE1445934C3 (en) | 1974-02-28 |
DE1445934A1 (en) | 1969-02-20 |
DE1445934B2 (en) | 1973-08-02 |
SE324768B (en) | 1970-06-15 |
DK104845C (en) | 1966-07-11 |
AT252914B (en) | 1967-03-10 |
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