GB1124398A - A method of preparing 5-amino-4-chloro-2-phenylpyridazine-3-one - Google Patents
A method of preparing 5-amino-4-chloro-2-phenylpyridazine-3-oneInfo
- Publication number
- GB1124398A GB1124398A GB1742566A GB1742566A GB1124398A GB 1124398 A GB1124398 A GB 1124398A GB 1742566 A GB1742566 A GB 1742566A GB 1742566 A GB1742566 A GB 1742566A GB 1124398 A GB1124398 A GB 1124398A
- Authority
- GB
- United Kingdom
- Prior art keywords
- compounds
- phenylpyridazine
- chloro
- amino
- preparing
- 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
- C07D237/00—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings
- C07D237/02—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings
- C07D237/06—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D237/10—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members 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
- C07D237/22—Nitrogen and oxygen atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyridine Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
Abstract
The compound <FORM:1124398/C2/1> is prepared by reacting 4,5-dichloro-2-phenylpyridaz-3-one with NH3 and then removing organic by-products and impurities from the product by extraction with a non-polar organic solvent selected from alkyl- and halogen-substituted compounds or unsubstituted compounds, which compounds have at least one partially or wholly reduced benzene ring or are aromatic compounds containing at least one benzene ring, or with a mixture of two or more of the said solvents. Specification 871,674 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CS341665 | 1965-05-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1124398A true GB1124398A (en) | 1968-08-21 |
Family
ID=5374142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1742566A Expired GB1124398A (en) | 1965-05-26 | 1966-04-21 | A method of preparing 5-amino-4-chloro-2-phenylpyridazine-3-one |
Country Status (5)
Country | Link |
---|---|
AT (1) | AT260943B (en) |
BE (1) | BE678857A (en) |
DE (1) | DE1620186A1 (en) |
GB (1) | GB1124398A (en) |
NL (1) | NL6603960A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4286092A (en) * | 1978-06-22 | 1981-08-25 | Oxon Italia S.P.A. | 5-Amino-4-chloro-2-phenyl-3(2H)-pyridazinone free from 5-chloro-4-amino-2-phenyl-3(2H)-pyridazinone, as a selective weed-killer |
US6538135B1 (en) | 1999-03-31 | 2003-03-25 | Basf Aktiengesellschaft | Method for producing 4-amino-5-chloro-1-phenyl pyridazinone-(6) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2100685C2 (en) * | 1971-01-08 | 1983-09-22 | Basf Ag, 6700 Ludwigshafen | Process for the preparation of pure 4-amino-5-halogen-pyridazonen- (6) |
DE2937421A1 (en) * | 1979-09-15 | 1981-04-09 | Basf Ag, 6700 Ludwigshafen | METHOD FOR PRODUCING 4-AMINO-5-CHLORINE-1-PHENYLPYRIDAZONE- (6) |
-
1966
- 1966-03-07 AT AT211666A patent/AT260943B/en active
- 1966-03-09 DE DE19661620186 patent/DE1620186A1/en active Pending
- 1966-03-25 NL NL6603960A patent/NL6603960A/xx unknown
- 1966-04-01 BE BE678857D patent/BE678857A/xx unknown
- 1966-04-21 GB GB1742566A patent/GB1124398A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4286092A (en) * | 1978-06-22 | 1981-08-25 | Oxon Italia S.P.A. | 5-Amino-4-chloro-2-phenyl-3(2H)-pyridazinone free from 5-chloro-4-amino-2-phenyl-3(2H)-pyridazinone, as a selective weed-killer |
DK156656B (en) * | 1978-06-22 | 1989-09-18 | Oxon Italia Spa | METHOD FOR PREPARING 5-AMINO-4-CHLORO-2-PHENYL-3 (2H) -PYRIDAZINON |
US6538135B1 (en) | 1999-03-31 | 2003-03-25 | Basf Aktiengesellschaft | Method for producing 4-amino-5-chloro-1-phenyl pyridazinone-(6) |
Also Published As
Publication number | Publication date |
---|---|
DE1620186A1 (en) | 1970-02-12 |
NL6603960A (en) | 1966-11-28 |
AT260943B (en) | 1968-03-25 |
BE678857A (en) | 1966-09-16 |
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