FR2063630A5 - 3,5-dichloro-2,6-difluoro-4-hydroxypyridine - prepn - Google Patents
3,5-dichloro-2,6-difluoro-4-hydroxypyridine - prepnInfo
- Publication number
- FR2063630A5 FR2063630A5 FR6936541A FR6936541A FR2063630A5 FR 2063630 A5 FR2063630 A5 FR 2063630A5 FR 6936541 A FR6936541 A FR 6936541A FR 6936541 A FR6936541 A FR 6936541A FR 2063630 A5 FR2063630 A5 FR 2063630A5
- Authority
- FR
- France
- Prior art keywords
- prepn
- hydroxypyridine
- difluoro
- dichloro
- difluoropyrid
- 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
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
- C07D211/36—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no 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
- C07D211/40—Oxygen atoms
- C07D211/44—Oxygen atoms attached in position 4
- C07D211/46—Oxygen atoms attached in position 4 having a hydrogen atom as the second substituent in position 4
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/68—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member
- C07D211/72—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D211/74—Oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/68—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member
- C07D211/72—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D211/74—Oxygen atoms
- C07D211/76—Oxygen atoms attached in position 2 or 6
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Pyridine Compounds (AREA)
Abstract
(I) and its salts are prepd. by hydrolysis of the 2,4,6-trifluoro deriv. with aqs. sodium or potassium carbonate or bicarbonate at 90-100 degrees. The 2,4-difluoropyrid-6-one by product is removed by acid pptn. at pH 2.5, and (I) isolated by acidifying to pH 1.0. (I) is a herbicide.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR6936541A FR2063630A5 (en) | 1969-10-24 | 1969-10-24 | 3,5-dichloro-2,6-difluoro-4-hydroxypyridine - prepn |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR6936541A FR2063630A5 (en) | 1969-10-24 | 1969-10-24 | 3,5-dichloro-2,6-difluoro-4-hydroxypyridine - prepn |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2063630A5 true FR2063630A5 (en) | 1971-07-09 |
Family
ID=9042019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR6936541A Expired FR2063630A5 (en) | 1969-10-24 | 1969-10-24 | 3,5-dichloro-2,6-difluoro-4-hydroxypyridine - prepn |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2063630A5 (en) |
-
1969
- 1969-10-24 FR FR6936541A patent/FR2063630A5/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1265485A (en) | ||
GB1415023A (en) | Thiamphenicol derivatives | |
FR2063630A5 (en) | 3,5-dichloro-2,6-difluoro-4-hydroxypyridine - prepn | |
NL6915504A (en) | 3,5-dichloro-2,6-difluoro-4-hydroxypyridine - prepn | |
GB772345A (en) | Improvements in or relating to preparation of polyvinylamine | |
GB1299543A (en) | Process for the continuous production of pure sorbic acid | |
GB1367435A (en) | Production of ypsilon-amino-beta-hydroxybutanoic acid | |
GB1260072A (en) | Process for the production of 2-hydroxyquinoline-4-carboxylic acids and salts thereof | |
FR2041439A5 (en) | Aminoethane sulphonate esters taurines - and betaines | |
GB1255153A (en) | Manufacture of 3,5-dichloro-2,6-difluoro-4-hydroxypyridine and salts thereof | |
GB855504A (en) | Preparation of 2-methyl-4-chloro-phenoxy alkanoic acids | |
GB1144968A (en) | Improvements in or relating to the preparation of cyclohexylsulfamic acid | |
GB1166426A (en) | Process for the Preparation of Pyridoxine-4,5-cyclic Monophosphate | |
IL33259A0 (en) | Aqueous solutions of the potassium salt of alpha-(2 4-dichlorophenoxy)-propionic acid,their production and use as herbicides | |
GB987915A (en) | Production of 2,4-diamino-6-hydroxypteridine | |
GB1290748A (en) | ||
SE7409679L (en) | ||
CA560328A (en) | Continuous production of salts of hydroxy aliphatic sulfonic acids | |
GB1305120A (en) | ||
JPS5222599A (en) | Production of alkali hydroxide | |
ES336788A1 (en) | 5-halosalicylic acid derivatives | |
AU435257B2 (en) | Aqueous solutions ofthe potassium salt of of (2, 4 dichlorophenoxy) propionic acid andthe production thereof | |
ES259541A1 (en) | Process for the manufacture of l-lysine or salts thereof | |
GB1224575A (en) | A method for the production of 2-mercaptoinosine | |
GB1353190A (en) | N-phenethyl -5-chlorosalicylamide n-phenethyl-5-chloro-2-metho xybenzamide and the production of n-phenethyl5-chloro-2-methoxy benzamide |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |