GB1306517A – Manufacture of halogenated pyridine derivatives
– Google Patents
GB1306517A – Manufacture of halogenated pyridine derivatives
– Google Patents
Manufacture of halogenated pyridine derivatives
Info
Publication number
GB1306517A
GB1306517A
GB2754270A
GB1306517DA
GB1306517A
GB 1306517 A
GB1306517 A
GB 1306517A
GB 2754270 A
GB2754270 A
GB 2754270A
GB 1306517D A
GB1306517D A
GB 1306517DA
GB 1306517 A
GB1306517 A
GB 1306517A
Authority
GB
United Kingdom
Prior art keywords
pyridine
difluoro
chloro
manufacture
pyridine derivatives
Prior art date
1970-06-08
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
GB2754270A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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.)
1970-06-08
Filing date
1970-06-08
Publication date
1973-02-14
1970-06-08
Application filed by Imperial Chemical Industries Ltd
filed
Critical
Imperial Chemical Industries Ltd
1973-02-14
Publication of GB1306517A
publication
Critical
patent/GB1306517A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
C07D213/61—Halogen atoms or nitro radicals
Abstract
1306517 Fluoropyridines IMPERIAL CHEMICAL INDUSTRIES Ltd 25 May 1971 [8 June 1970] 27542/70 Heading C2C Chlorine is replaced by fluorine as a substituent in the 2-, 4- or 6-position of the pyridine ring by reaction of a chloropyridine or chlorofluoropyridine with an alkali metal fluoride in a non-hydroxylic solvent, optionally containing water, in the presence as initiator of an acidic compound, basic compound or alcohol. Products include the novel compounds 2-fluoro-4- chloro – pyridine, À4 – fluoro – 2 – chloro – pyridine, 2,4 – difluoro – pyridine, 2,4 – difluoro – 6- chloro – pyridine and 2,6 – difluoro – 4 – chloropyridine.
GB2754270A
1970-06-08
1970-06-08
Manufacture of halogenated pyridine derivatives
Expired
GB1306517A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB2754270
1970-06-08
Publications (1)
Publication Number
Publication Date
GB1306517A
true
GB1306517A
(en)
1973-02-14
Family
ID=10261291
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB2754270A
Expired
GB1306517A
(en)
1970-06-08
1970-06-08
Manufacture of halogenated pyridine derivatives
Country Status (8)
Country
Link
BE
(1)
BE768204A
(en)
CA
(1)
CA926402A
(en)
DE
(1)
DE2128540A1
(en)
FR
(1)
FR2096028A5
(en)
GB
(1)
GB1306517A
(en)
IL
(1)
IL36988A0
(en)
NL
(1)
NL7107817A
(en)
ZA
(1)
ZA713474B
(en)
Cited By (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4031100A
(en)
*
1976-08-23
1977-06-21
The Dow Chemical Company
Process for making 2,6-difluoropyridine
US4071521A
(en)
*
1976-08-23
1978-01-31
The Dow Chemical Company
Process for making 2,6-difluoro pyridine
US4713231A
(en)
*
1986-07-21
1987-12-15
The Dow Chemical Company
Process for the recovery of ammonia and fluoride values from ammonium fluoride solutions
US4746744A
(en)
*
1986-10-22
1988-05-24
The Dow Chemical Company
Method of preparation of 3,5-dichloro-2,4,6-trifluoropyridine
WO2000044724A1
(en)
*
1999-02-01
2000-08-03
Makhteshim Chemical Works Ltd.
Improved method for the preparation of 3,5-dichloro-2,4,6-trifluoropyridine
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP0120575B1
(en)
*
1983-02-18
1989-06-14
Nippon Shokubai Kagaku Kogyo Co., Ltd
Organic fluorine compounds
1970
1970-06-08
GB
GB2754270A
patent/GB1306517A/en
not_active
Expired
1971
1971-05-28
ZA
ZA713474A
patent/ZA713474B/en
unknown
1971-05-28
CA
CA114274A
patent/CA926402A/en
not_active
Expired
1971-06-04
IL
IL36988A
patent/IL36988A0/en
unknown
1971-06-07
FR
FR7120598A
patent/FR2096028A5/fr
not_active
Expired
1971-06-07
BE
BE768204A
patent/BE768204A/en
unknown
1971-06-08
DE
DE19712128540
patent/DE2128540A1/en
active
Pending
1971-06-08
NL
NL7107817A
patent/NL7107817A/xx
unknown
Cited By (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4031100A
(en)
*
1976-08-23
1977-06-21
The Dow Chemical Company
Process for making 2,6-difluoropyridine
US4071521A
(en)
*
1976-08-23
1978-01-31
The Dow Chemical Company
Process for making 2,6-difluoro pyridine
US4713231A
(en)
*
1986-07-21
1987-12-15
The Dow Chemical Company
Process for the recovery of ammonia and fluoride values from ammonium fluoride solutions
US4746744A
(en)
*
1986-10-22
1988-05-24
The Dow Chemical Company
Method of preparation of 3,5-dichloro-2,4,6-trifluoropyridine
WO2000044724A1
(en)
*
1999-02-01
2000-08-03
Makhteshim Chemical Works Ltd.
Improved method for the preparation of 3,5-dichloro-2,4,6-trifluoropyridine
Also Published As
Publication number
Publication date
NL7107817A
(en)
1971-12-10
FR2096028A5
(en)
1972-02-11
BE768204A
(en)
1971-12-07
CA926402A
(en)
1973-05-15
IL36988A0
(en)
1971-08-25
DE2128540A1
(en)
1971-12-16
ZA713474B
(en)
1972-01-26
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Legal Events
Date
Code
Title
Description
1973-06-27
PS
Patent sealed [section 19, patents act 1949]
1975-12-24
PLNP
Patent lapsed through nonpayment of renewal fees
