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-one

Info

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
Application number
GB1742566A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ERVIN FEDOR
ERVIN SOHLER
PAVEL WINTERNITZ
Original Assignee
ERVIN FEDOR
ERVIN SOHLER
PAVEL WINTERNITZ
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ERVIN FEDOR, ERVIN SOHLER, PAVEL WINTERNITZ filed Critical ERVIN FEDOR
Publication of GB1124398A publication Critical patent/GB1124398A/en
Expired legal-status Critical Current

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)
  • Plural Heterocyclic Compounds (AREA)
  • Pyridine 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.
GB1742566A 1965-05-26 1966-04-21 A method of preparing 5-amino-4-chloro-2-phenylpyridazine-3-one Expired GB1124398A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

Cited By (3)

* Cited by examiner, † Cited by third party
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
BE678857A (en) 1966-09-16
NL6603960A (en) 1966-11-28
AT260943B (en) 1968-03-25
DE1620186A1 (en) 1970-02-12

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