EP0885179A1 - Verfahren zur herstellung von fluorierten aromaten und fluorierten stickstoffhaltigen heteroaromaten - Google Patents
Verfahren zur herstellung von fluorierten aromaten und fluorierten stickstoffhaltigen heteroaromatenInfo
- Publication number
- EP0885179A1 EP0885179A1 EP97905116A EP97905116A EP0885179A1 EP 0885179 A1 EP0885179 A1 EP 0885179A1 EP 97905116 A EP97905116 A EP 97905116A EP 97905116 A EP97905116 A EP 97905116A EP 0885179 A1 EP0885179 A1 EP 0885179A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- radicals
- alkyl
- formula
- general formula
- compound
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B39/00—Halogenation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
- C07C201/06—Preparation of nitro compounds
- C07C201/12—Preparation of nitro compounds by reactions not involving the formation of nitro groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
- C07C45/63—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by introduction of halogen; by substitution of halogen atoms by other halogen atoms
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more 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, directly attached to ring carbon atoms
- C07D239/32—One oxygen, sulfur or nitrogen atom
- C07D239/42—One nitrogen atom
Definitions
- the invention relates to a process for the preparation of fluorinated aromatic compounds of the general formula I.
- R 1 , R 2 , R 3 , R 4 , R 5 , R 6 the same or different, hydrogen, F, Cl, Br, J, NO 2 , CF 3 , CN, CHO, COF, SO 2 F, SO 2 CI, OCF 3 , SCF 3 , SO 2 CF 3 , COOR 7 , CONR 8 R 9 , SO 2 R 10 , COR 1 1 or OR 12 or two residues from the group R 1 to R 6 located in the ortho position to one another together are -OC-NR 13 -CO-,
- R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 the same or different, independently of one another, hydrogen, C 1 -C 6 -alkyl, linear or branched, aryl, preferably phenyl, or arylalkyl, and both the alkyl radicals and the arylalkyl radicals can optionally be substituted up to three times with halogen, preferably CF 3 and CHal x H 3 .
- x can be, and optionally two or more of the radicals R 1 to R 13 are joined together to form one or more rings, it being possible for the ring or rings to have 3 to 7 ring members,
- MeF (II) where Me is Na, K, Cs, Rb, N (R 14 ) 4 or P (R 15 ) 4 ,
- R 14 radicals independently of one another, may be the same or different hydrogen, C 1 -C 8 -alkyl, linear or branched, the alkyl radicals in turn being able to be substituted, for example, with aromatic radicals; and the four R 15 radicals, independently of one another, the same or different, can have the meaning of R 14 and can also be phenyl; in a reaction medium.
- the substitution of aromatically bound hydrogen by fluorine is of great importance for the synthesis of bioactive substances or for the preparation of precursors to such compounds. Furthermore, it is well known that fluorine has strong and often unexpected effects on the biological activity of chemical compounds. The exchange of hydrogen for fluorine in a biologically active molecule often leads to an analogue compound with an increased or modified biological effect.
- Patents and publications D1 to D5 generally describe the production of fluoroaromatics by directly exchanging halogen atoms with KF, CsF or (Alk) 4 N + F " .
- KF KF
- CsF CsF
- Alk Alk
- F Industrial time only used KF.
- its use has a number of serious disadvantages.
- the solubility of KF in most aprotic organic solvents is generally very low and is in the range of about 10 "3 mol / l or less. This means a low concentration of fluoride ions in solution and leads to de facto long reaction times, one high energy consumption and high equipment costs, and there is also a need to work at high temperatures, which often leads to the formation of by-products.
- the Cl-F exchange usually takes place at activated aromatics at temperatures in the range of about 100 to 200 ° C and at non-activated aromatics at temperatures in the range of about 250 to 400 ° C.
- slightly or not activated aromatics particularly drastic reaction conditions are necessary (cf. D10), with numerous by-products being formed.
- the reactions can be carried out in a solvent or without solvent. However, the best results can be achieved using aprotic, highly polar solvents as the reaction medium.
- Acetonitrile (CH 3 CN), dimethylformamide (DMFA), dimethylacetamide (DMAA), N-methylpyrrolidone (NMP), dimethyl sulfoxide (DMSO), tetramethylene sulfone (sulfolane or TMS), hexamethylphosphoric triamide (HMPA), pyridylonitrile (pyridylonitrile) were used as solvents (PhCN) used.
- the rate of fluorination with KF on the same substrate increases depending on the solvent as follows: acetonitrile (CH 3 CN) - N-methylpyrrolidone (NMP) - tetramethylene sulfone (sulfolane) - dimethyl sulfoxide (DMSO) (see D6).
- HMPA HMPA shows excellent properties as a solvent for Halex reactions, but because of its toxicity for industrial processes it is out of the question.
- R 16 is an alkyl radical with 1 to 8 carbon atoms, which can be linear or branched, phenyl, benzyl, cycloalkyl, OR 25 or NR 26 R 27 , where R 25 to R 27, independently of one another, identically or differently, are an alkyl radical with 1 mean up to 4 carbon atoms, which can be linear or branched, and
- R 17 , R 18 , R 19 , R 20 , R 21 , R 22 , R 23 , R 24 independently of one another, identically or differently, denote hydrogen, phenyl or a C 1-6 alkyl radical, linear or branched,
- the method of the invention has the following advantages.
- the compounds of the general formulas III to V are high-boiling, thermally stable, non-toxic or only slightly toxic liquids.
- solubility of, for example, KF in reaction media of the general formulas III to V is substantially better, especially at elevated temperatures, than in TMS, NMP, DMAA and comparable to DMSO, so that the fluorination of aromatics takes place completely without any great technical effort by means of halogen exchange and the response time and energy consumption are reduced
- the compounds of the general formulas III to V cover a broad spectrum of boiling points, so that by selecting a suitable compound depending on the boiling point of the expected target product, in almost all cases the reaction mixture can be worked up after the fluorination by separating the reaction mixture by distillation .
- the compounds of the general formulas III to V can already provide these advantages if they are present in reaction media for the Halex reaction. That is, they are an addition to an otherwise common reaction medium for fluorination by halogen exchange. In this way, the advantages of the invention can already be achieved.
- the proportion of compound of the general formulas III to V is variable, since even small additives are able to ensure a positive influence on the Halex reaction.
- the proportion of compounds of the general formulas III to V which is present in the reaction medium according to the invention is preferably 1.0 to 100 mol%, in particular 5.0 to 80 mol% and particularly preferably 10 to 60 mol%, based on the compound corresponding to formula I, but in which the radical R 1 to R 6 which is fluorine in formula I is Cl or Br.
- a proportion of more than 50% by weight (wt / wt) based on the total weight of the reaction medium is particularly expedient.
- the 1-alkyl-2,3-dihydro-1 H-phosphol-1-oxides of the general formula III, 1-alkyl-2,5-dihydro-1 H-phosphol-1-oxides, which are suitable according to the invention as diluents or solvents of the general formula IV and / or 1-alkylphospholan-1-oxides of the general formula V are for the most part commercially available and thus available.
- Compounds of the general formulas III to V which are not commercially available can be synthesized in a simple manner by processes familiar to the person skilled in the art. Examples of syntheses can be found, inter alia, in DE-A 2826621 or DE-A 35 14451.
- reaction media mentioned can be used as a diluent, solvent or additive to such agents.
- the compounds according to the invention can be used in pure form or in a mixture of more than one compound.
- the various compounds belonging to the general formulas III to V have different boiling points. Depending on the boiling point of the aromatic starting materials and products and depending on the desired product work-up, a compound tailored to each individual case or an optimal mixture of several compounds of the formulas III to V can be selected, be it as an additive to other reaction media or as a pure reaction medium Form or in a mixture.
- Particularly preferred among the compounds of the general formulas III to V in the context of the invention are 1-methyl-2,3-dihydro-1 H-phosphol-1-oxide (same as purple), 1-methyl-2,5-dihydro- 1 H-phosphol-1-oxide (same as compound IVa) and / or 1-methyl-phospholan-1-oxide (same as compound Va), ie it is advantageous Fluorination is carried out by halogen exchange in one or more compounds of the general formulas III, IV and / or V, in which R 16 is methyl and R 17 to R 24 are hydrogen.
- the process according to the invention is further modified in such a way that the fluorination is carried out by halogen exchange in 1-alkylphospholan-1-oxides of the general formula V; 1-methyl-phospholan-1-oxide (same as compound Va).
- the process according to the invention is applicable to a large number of compounds corresponding to the general formula I, in which case also substrates which include structures of the formula I as an aromatic subunit in a larger molecule are to be counted.
- R 1 'to R 5' the same or different, hydrogen, F, Cl, Br, J, NO 2 , CF 3 , CN, CHO, COF, SO 2 F, SO 2 CI, OCF 3 , SCF 3 , SO 2 CF.
- R 1 ' to R 4' the same or different, hydrogen, F, Cl, Br, J, NO 2 , CF 3 , CN, CHO, COF, SO 2 F, SO 2 CI, OCF 3 , SCF 3 , SO 2 CF.
- R 1 ' to R 4' have the same meaning as in formula VIII and shark stands for Cl or Br.
- the process according to the invention can also be used to prepare compounds of the general formula X, XI and XII or XIII
- R 1 ' to R 3' are the same or different, hydrogen, F, Cl, Br, J, NO 2 , CF 3 , CN, CHO, COF, SO 2 F, SO 2 CI, OCF 3 , SCF 3 , SO 2 CF. 3 , COOR 7 , CONR 8 R 9 , SO 2 R 10 , COR 11 or OR 12 or, where possible, two radicals from the group R 1 ' to R 3' located in the ortho position to one another together -OC-NR 13 Are -CO-, with R 7 to R 13 as in formula I,
- R 1 ' to R 3' have the meaning given in the formulas X to XIII and shark stands for Cl or Br.
- the fluorination by halogen exchange is carried out at temperatures in the range from about room temperature to the boiling point of the reaction medium or the starting materials, which correspond to compounds of the general formula I, depending on which boiling point is lower .
- temperatures can usually be kept lower without sacrificing the speed of the reaction.
- the Halex process according to the invention is characterized in that the fluorination is carried out by halogen exchange at temperatures in the range from about 40 ° C. to about 270 ° C. In a particularly preferred modification, the reaction temperatures are in the range from about 60 ° C. to about 220 ° C.
- the fluorinating agents which can be used according to the invention basically include all compounds of the formula II (MeF) in which Me represents an alkali metal, ammonium, phosphonium or an alkylammonium or alkyl or arylphosphonium radical derived from ammonium or phosphonium.
- Me represents an alkali metal, ammonium, phosphonium or an alkylammonium or alkyl or arylphosphonium radical derived from ammonium or phosphonium.
- Compounds such as sodium fluoride, potassium fluoride, cesium fluoride, tetramethylammonium fluoride and other tetraalkylammonium fluorides in which Alkyl represents ethyl, n-propyl, n-butyl. Tetraphenylphosphoium fluoride is also particularly useful.
- potassium fluoride is particularly preferred because of its low price.
- the fluorinating agents are used in an amount sufficient to achieve the desired level of halogen exchange. Their stoichiometric use is preferred, based on the amount of the starting compound which corresponds to the compound of the formula I. Use in excess is also preferred, particularly preferably 1.1 to 2.0 times the molar amount based on the mol of the halogen atoms to be replaced in the starting compound or compounds.
- the efficiency of the reaction media used according to the invention can optionally be further improved by adding catalytically active compounds. In general, all the expert can do this for. B. from the references cited known catalysts.
- the catalysts which can be used include (R “ ) 4 N + Hal " with shark equal to Cl or Br and R “ equal to C r C 4 alkyl, linear or branched; (R '" ) 4 P + Hal " with shark equal Cl or Br and R '" equal to C r C 4 alkyl, linear or branched, or aryl, preferably phenyl; Crown ether; Polyethylene glycols and / or pyridinium salts.
- the process of the invention is particularly advantageous with the addition of catalytically effective amounts of tetramethylammonium chloride, tetrabutylammonium chloride, tetraphenylphosphonium bromide, 18-crown-6, PEG and / or R 28 R 29 Np-pyridinium-R 30 , in which R 28 to R 30 preferably an alkyl radical mean with 1 to 8 carbon atoms, which can be linear or branched.
- the work-up of the reaction mixture after the fluorination can, as already indicated, advantageously be carried out by separating the reaction mixture by distillation and enables the solvents to be isolated and recycled.
- the mixture is poured into an excess of water and the products obtained are filtered off or extracted with organic solvents.
- the extraction of the compounds of the general formulas III to V can be carried out in a simple manner and completely from reaction solutions in perforators continuously with dichloromethane or trichloromethane.
- the desired target products are obtained with extraordinary purity.
- products with a degree of purity of the crude product> 90% are generally available according to the procedure described here. It is noteworthy, for example, that, apart from the compounds of the general formulas III to V, it is hardly possible to extract any impurities and that, after the solvent has been stripped off, crude products which are> 95% pure are obtained.
- the invention also relates to the use of 1-alkyl-2,3-dihydro-1H-phosphol-1-oxides of the general formula III, 1-alkyl-2,5-dihydro-1H-phosphol-1-oxides of the general formula IV and / or 1-alkyl-phospholan-1-oxides of the general formula V,
- R 16 is an alkyl radical with 1 to 8 carbon atoms, which can be linear or branched, phenyl, Is benzyl, cycloalkyl, OR 25 or NR 26 R 27 , where R 25 to R 27, independently of one another, identically or differently, denote an alkyl radical having 1 to 4 carbon atoms, which may be linear or branched, and
- R 17 , R 18 , R 19 , R 20 , R 21 , R 22 , R 23 , R 24 independently of one another, identically or differently, denote hydrogen, phenyl or a C 1-4 alkyl radical, linear or branched,
- reaction medium as a reaction medium, diluent, solvent or addition to such media and agents to the starting compounds in the preparation of fluorinated aromatic compounds of the general formula I.
- R 1 , R 2 , R 3 , R 4 , R 5 , R 6 the same or different, hydrogen, F, Cl, Br, J, NO 2 , CF 3 , CN, CHO, COF, SO 2 F, SO 2 CI, OCF 3 , SCF 3 , SO 2 CF 3 , COOR 7 , CONR 8 R 9 , SO 2 R 10 , COR 11 or OR 12 are together or two residues from the group R 1 to R 6 which are in the ortho-position to one another -OC-NR 13 -CO-,
- R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 the same or different, independently of one another hydrogen, C r C 6 alkyl, linear or branched, aryl, preferably phenyl, or arylalkyl , and both the alkyl radicals and the arylalkyl radicals can optionally be substituted up to three times with halogen, where they can preferably be CF 3 and CHal x H 3.x , and
- radicals R 1 to R 13 are joined together to form one or more rings, it being possible for the ring or rings to have 3 to 7 ring members,
- the remaining radicals from the group R 1 to R 6 may all be hydrogen
- R 14 radicals independently of one another, may be the same or different hydrogen, C 1 -C 8 -alkyl, linear or branched, the alkyl radicals in turn being able to be substituted, for example, with aromatic radicals; and the four radicals R 15 , independently of one another, the same or different, have the meaning of R 14 and can also be phenyl.
- reaction mixture was poured into an excess of water and the solid constituents were filtered off, optionally extracted with CH 2 Cl 2 to obtain liquid products, washed with water and dried.
- product mixture obtained can be analyzed with GC, GCMS and 19 F NMR.
- the products are further purified by recrystallization from suitable solvents or fractional distillation at atmospheric pressure or under reduced pressure.
- Table 1 gives an overview of the substrates used in the examples, which were used for fluorination by halogen exchange Reaction media, the further reaction conditions, the conversion and the yield of the overall product.
- Tetraphenylphosphonium as catalyst Cf. 12a * comparative example taken from D14 Example 15
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19608791 | 1996-03-07 | ||
DE19608791A DE19608791A1 (de) | 1996-03-07 | 1996-03-07 | Verfahren zur Herstellung von fluorierten Aromaten und fluorierten stickstoffhaltigen Heteroaromaten |
PCT/EP1997/000970 WO1997032832A1 (de) | 1996-03-07 | 1997-02-28 | Verfahren zur herstellung von fluorierten aromaten und fluorierten stickstoffhaltigen heteroaromaten |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0885179A1 true EP0885179A1 (de) | 1998-12-23 |
Family
ID=7787475
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97905116A Withdrawn EP0885179A1 (de) | 1996-03-07 | 1997-02-28 | Verfahren zur herstellung von fluorierten aromaten und fluorierten stickstoffhaltigen heteroaromaten |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0885179A1 (de) |
JP (1) | JP2000506149A (de) |
KR (1) | KR19990087687A (de) |
CN (1) | CN1212674A (de) |
CA (1) | CA2248294A1 (de) |
DE (1) | DE19608791A1 (de) |
WO (1) | WO1997032832A1 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998022413A1 (en) | 1996-11-22 | 1998-05-28 | Albemarle Corporation | Halogen exchange reactions and uses thereof |
DE19934594A1 (de) | 1999-07-23 | 2001-01-25 | Clariant Gmbh | Tetrakis(pyrrolidino/piperidino) phosphoniumsalze enthaltende Mischungen |
DK1474395T3 (da) | 2002-02-12 | 2008-02-11 | Smithkline Beecham Corp | Nicotinamidderivater, der er nyttige som p38-inhibitorer |
GB0308201D0 (en) | 2003-04-09 | 2003-05-14 | Smithkline Beecham Corp | Novel compounds |
DE102004033525A1 (de) | 2004-07-08 | 2006-02-02 | Lanxess Deutschland Gmbh | Verbessertes Verfahren zur Herstellung kernfluorierter Aromaten |
SI3102576T1 (sl) | 2014-02-03 | 2019-08-30 | Vitae Pharmaceuticals, Llc | Inhibitorji dihidropirolopiridina ROR-gama |
WO2016061160A1 (en) | 2014-10-14 | 2016-04-21 | Vitae Pharmaceuticals, Inc. | Dihydropyrrolopyridine inhibitors of ror-gamma |
US9845308B2 (en) | 2014-11-05 | 2017-12-19 | Vitae Pharmaceuticals, Inc. | Isoindoline inhibitors of ROR-gamma |
US9663515B2 (en) | 2014-11-05 | 2017-05-30 | Vitae Pharmaceuticals, Inc. | Dihydropyrrolopyridine inhibitors of ROR-gamma |
EP3331876B1 (de) | 2015-08-05 | 2020-10-07 | Vitae Pharmaceuticals, LLC | Modulatoren von ror-gamma |
MA53943A (fr) | 2015-11-20 | 2021-08-25 | Vitae Pharmaceuticals Llc | Modulateurs de ror-gamma |
TWI757266B (zh) | 2016-01-29 | 2022-03-11 | 美商維它藥物有限責任公司 | ROR-γ調節劑 |
US9481674B1 (en) | 2016-06-10 | 2016-11-01 | Vitae Pharmaceuticals, Inc. | Dihydropyrrolopyridine inhibitors of ROR-gamma |
WO2019018975A1 (en) | 2017-07-24 | 2019-01-31 | Vitae Pharmaceuticals, Inc. | INHIBITORS OF ROR GAMMA |
IL298639A (en) | 2017-07-24 | 2023-01-01 | Vitae Pharmaceuticals Llc | Inhibitors of gamma ror |
CN115745766B (zh) * | 2022-10-27 | 2024-05-14 | 兰州康鹏威耳化工有限公司 | 一种三氟苯甲醛及三氟苄溴的制备方法 |
CN115611717B (zh) * | 2022-11-01 | 2024-06-28 | 上海万溯药业有限公司 | 一种多氟代苯甲醛的制备方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2525442C3 (de) * | 1975-06-07 | 1978-04-13 | Bayer Ag, 5090 Leverkusen | Verfahren zur Herstellung geminaler Dihalogenide |
JP2501723B2 (ja) * | 1991-07-17 | 1996-05-29 | ヘキスト・アクチェンゲゼルシャフト | クロロフルオロニトロベンゼンの製造方法 |
US5315043A (en) * | 1992-02-05 | 1994-05-24 | E. I. Du Pont De Nemours And Company | Aromatic nucleophilic fluorination |
-
1996
- 1996-03-07 DE DE19608791A patent/DE19608791A1/de not_active Withdrawn
-
1997
- 1997-02-28 KR KR1019980707152A patent/KR19990087687A/ko not_active Application Discontinuation
- 1997-02-28 CN CN97192773A patent/CN1212674A/zh active Pending
- 1997-02-28 JP JP9531421A patent/JP2000506149A/ja active Pending
- 1997-02-28 WO PCT/EP1997/000970 patent/WO1997032832A1/de not_active Application Discontinuation
- 1997-02-28 CA CA002248294A patent/CA2248294A1/en not_active Abandoned
- 1997-02-28 EP EP97905116A patent/EP0885179A1/de not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO9732832A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1997032832A1 (de) | 1997-09-12 |
CA2248294A1 (en) | 1997-09-12 |
DE19608791A1 (de) | 1997-09-11 |
JP2000506149A (ja) | 2000-05-23 |
KR19990087687A (ko) | 1999-12-27 |
CN1212674A (zh) | 1999-03-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO1997032832A1 (de) | Verfahren zur herstellung von fluorierten aromaten und fluorierten stickstoffhaltigen heteroaromaten | |
EP1616863A1 (de) | Verfahren zur Herstellung Kernfluorierter Aromaten | |
DE19548428C1 (de) | 2-Alkylmerkapto-4-(trifluormethyl)-benzoesäureester sowie ein Verfahren zu ihrer Herstellung | |
DE10129057A1 (de) | Verbessertes Verfahren zur Herstellung kernfluorierter Aromaten | |
DE2812649A1 (de) | 2-phenoxy-5-trifluormethylpyridin- verbindungen und verfahren zu deren herstellung | |
EP0168344B1 (de) | Verfahren zur Herstellung von alpha,alpha-Difluoralkyl-phenyläther-Derivaten | |
EP0556737B1 (de) | Verfahren zur Herstellung von substituierten 2,3-Difluorpyridinen | |
DE3605714A1 (de) | Mikrobizide mittel | |
DE10005853C1 (de) | Verfahren zur Herstellung von Bis-(4-amino-1-pyridinium)-alkanen | |
EP0297352A1 (de) | (Azolyl-vinyl)-phenol-alkenylether | |
DE19836698A1 (de) | Verfahren zur Herstellung von fluorierten Benzylalkoholen und -aldehyden | |
EP0068260A2 (de) | Substituierte Phenoxypropionate, Verfahren zu ihrer Herstellung und ihre Verwendung als Herbizide | |
DE2512498C2 (de) | Verfahren zur herstellung von sulfonsaeurefluoriden | |
EP0365914B1 (de) | Neue Fluor enthaltende und an der CH3-Gruppe gegebenenfalls halogenierte Acetophenone und deren Herstellung aus neuen Fluor enthaltenden Benzonitrilen | |
EP0693466A1 (de) | Verfahren zur Herstellung von aromatischen fluorierten Verbindungen und neue Diamide | |
DE2534601C2 (de) | Verfahren zur Herstellung von Camptothecin und Camptothecin-Derivaten | |
CH626874A5 (de) | ||
EP0274023A1 (de) | Saccharin-Salze von substituierten Aminen | |
EP0092111B1 (de) | 2,2-Dihalogeno-3,3-dimethylcyclopropan-Derivate | |
EP0061629B1 (de) | Verfahren zur Herstellung von substituierter alpha-Halogenpropionsäure und ihren Derivaten; substituiertes Vinylidenchlorid | |
EP0173153B1 (de) | Neue benzokondensierte, fluorierte, heterocyclische Verbindungen, ein Verfahren zu ihrer Herstellung und ihre Verwendung | |
EP0596395A1 (de) | Fluorierte Benzile und Verfahren zu ihrer Herstellung | |
EP0445644B1 (de) | Trifluor- bzw. Chlordifluormethoxypyrimidine und Verfahren zu ihrer Herstellung | |
DE3532478A1 (de) | Oxetan- und thietanderivate, verfahren zu ihrer herstellung und ihre verwendung als schaedlingsbekaempfungsmittel | |
WO2005019154A1 (de) | VERFAHREN ZUR HERSTELLUNG VON α-FLUOR-MALONSÄUREDIALKYLESTERN |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19981007 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB LI NL |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: AVENTIS RESEARCH & TECHNOLOGIES GMBH & CO KG |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17Q | First examination report despatched |
Effective date: 20000818 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 20010323 |