CA1137997A - Process for making 4-aroyl-substituted phenoxyacetic acids - Google Patents
Process for making 4-aroyl-substituted phenoxyacetic acidsInfo
- Publication number
- CA1137997A CA1137997A CA000355311A CA355311A CA1137997A CA 1137997 A CA1137997 A CA 1137997A CA 000355311 A CA000355311 A CA 000355311A CA 355311 A CA355311 A CA 355311A CA 1137997 A CA1137997 A CA 1137997A
- Authority
- CA
- Canada
- Prior art keywords
- oxime
- ester
- dmf
- dichloro
- reaction
- 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
- 238000000034 method Methods 0.000 title claims description 20
- 230000008569 process Effects 0.000 title claims description 18
- LCPDWSOZIOUXRV-UHFFFAOYSA-N phenoxyacetic acid Chemical class OC(=O)COC1=CC=CC=C1 LCPDWSOZIOUXRV-UHFFFAOYSA-N 0.000 title description 4
- 238000006243 chemical reaction Methods 0.000 claims description 23
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 18
- 150000002923 oximes Chemical class 0.000 claims description 14
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 9
- 150000002148 esters Chemical class 0.000 claims description 8
- -1 potassium oxime Chemical class 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 5
- 150000001768 cations Chemical class 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- 229910052700 potassium Inorganic materials 0.000 claims description 5
- 239000011591 potassium Substances 0.000 claims description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical group [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- PXAJQJMDEXJWFB-UHFFFAOYSA-N acetone oxime Chemical group CC(C)=NO PXAJQJMDEXJWFB-UHFFFAOYSA-N 0.000 claims description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- XRYJJQDYIXLPRB-UHFFFAOYSA-M potassium;2-[2,3-dichloro-4-(4-hydroxybenzoyl)phenoxy]acetate Chemical compound [K+].C1=CC(O)=CC=C1C(=O)C1=CC=C(OCC([O-])=O)C(Cl)=C1Cl XRYJJQDYIXLPRB-UHFFFAOYSA-M 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- FZENGILVLUJGJX-NSCUHMNNSA-N (E)-acetaldehyde oxime Chemical group C\C=N\O FZENGILVLUJGJX-NSCUHMNNSA-N 0.000 claims description 2
- FPSKUEZDUDXRDJ-UHFFFAOYSA-N 2-[2,3-dichloro-4-(4-nitrobenzoyl)phenoxy]acetic acid Chemical compound ClC1=C(Cl)C(OCC(=O)O)=CC=C1C(=O)C1=CC=C([N+]([O-])=O)C=C1 FPSKUEZDUDXRDJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000012429 reaction media Substances 0.000 claims description 2
- 229960003975 potassium Drugs 0.000 claims 2
- 235000007686 potassium Nutrition 0.000 claims 2
- 239000007788 liquid Substances 0.000 claims 1
- 150000004702 methyl esters Chemical class 0.000 claims 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims 1
- 150000003839 salts Chemical class 0.000 abstract description 7
- 239000002253 acid Substances 0.000 abstract description 4
- 239000002934 diuretic Substances 0.000 abstract description 3
- 230000003424 uricosuric effect Effects 0.000 abstract description 3
- 229940030606 diuretics Drugs 0.000 abstract description 2
- DSYOCFBXKYFILI-UHFFFAOYSA-N 2-[2,3-dichloro-4-(2-hydroxybenzoyl)phenoxy]acetic acid Chemical compound ClC1=C(Cl)C(OCC(=O)O)=CC=C1C(=O)C1=CC=CC=C1O DSYOCFBXKYFILI-UHFFFAOYSA-N 0.000 abstract 1
- MTAHWCJQWYLPMF-UHFFFAOYSA-N 2-[2,3-dichloro-4-(2-nitrobenzoyl)phenoxy]acetic acid Chemical compound ClC1=C(Cl)C(OCC(=O)O)=CC=C1C(=O)C1=CC=CC=C1[N+]([O-])=O MTAHWCJQWYLPMF-UHFFFAOYSA-N 0.000 abstract 1
- 150000007513 acids Chemical class 0.000 abstract 1
- 238000005580 one pot reaction Methods 0.000 abstract 1
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 15
- 239000000203 mixture Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 235000013350 formula milk Nutrition 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 2
- 230000036647 reaction Effects 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229910000104 sodium hydride Inorganic materials 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- VEUVOSMVGJHLBK-UHFFFAOYSA-N (2,3-dichloro-4-hydroxyphenyl)-(2-nitrophenyl)methanone Chemical compound ClC1=C(Cl)C(O)=CC=C1C(=O)C1=CC=CC=C1[N+]([O-])=O VEUVOSMVGJHLBK-UHFFFAOYSA-N 0.000 description 1
- VTWKXBJHBHYJBI-SOFGYWHQSA-N (ne)-n-benzylidenehydroxylamine Chemical compound O\N=C\C1=CC=CC=C1 VTWKXBJHBHYJBI-SOFGYWHQSA-N 0.000 description 1
- HFEASCCDHUVYKU-UHFFFAOYSA-N 1,2-dichloro-3-methoxybenzene Chemical compound COC1=CC=CC(Cl)=C1Cl HFEASCCDHUVYKU-UHFFFAOYSA-N 0.000 description 1
- IHHDKXIIMNLSIA-UHFFFAOYSA-N 2-[2,3-dichloro-4-(4-hydroxybenzoyl)phenoxy]acetic acid Chemical compound ClC1=C(Cl)C(OCC(=O)O)=CC=C1C(=O)C1=CC=C(O)C=C1 IHHDKXIIMNLSIA-UHFFFAOYSA-N 0.000 description 1
- BWWHTIHDQBHTHP-UHFFFAOYSA-N 2-nitrobenzoyl chloride Chemical compound [O-][N+](=O)C1=CC=CC=C1C(Cl)=O BWWHTIHDQBHTHP-UHFFFAOYSA-N 0.000 description 1
- 206010001497 Agitation Diseases 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- DBXMLOKHOPZDEN-UHFFFAOYSA-N C(C)=NO.[K] Chemical compound C(C)=NO.[K] DBXMLOKHOPZDEN-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 238000005727 Friedel-Crafts reaction Methods 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 208000036366 Sensation of pressure Diseases 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 229960000583 acetic acid Drugs 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- 239000002220 antihypertensive agent Substances 0.000 description 1
- 229940030600 antihypertensive agent Drugs 0.000 description 1
- 239000000010 aprotic solvent Substances 0.000 description 1
- 125000003435 aroyl group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- KCIDZIIHRGYJAE-YGFYJFDDSA-L dipotassium;[(2r,3r,4s,5r,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl] phosphate Chemical class [K+].[K+].OC[C@H]1O[C@H](OP([O-])([O-])=O)[C@H](O)[C@@H](O)[C@H]1O KCIDZIIHRGYJAE-YGFYJFDDSA-L 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 230000001882 diuretic effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- SHQRYRVONIMJPR-UHFFFAOYSA-N ethyl 2-[2,3-dichloro-4-(4-nitrobenzoyl)phenoxy]acetate Chemical compound ClC1=C(Cl)C(OCC(=O)OCC)=CC=C1C(=O)C1=CC=C([N+]([O-])=O)C=C1 SHQRYRVONIMJPR-UHFFFAOYSA-N 0.000 description 1
- VEUUMBGHMNQHGO-UHFFFAOYSA-N ethyl chloroacetate Chemical compound CCOC(=O)CCl VEUUMBGHMNQHGO-UHFFFAOYSA-N 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 239000012454 non-polar solvent Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 125000003232 p-nitrobenzoyl group Chemical group [N+](=O)([O-])C1=CC=C(C(=O)*)C=C1 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- NTTOTNSKUYCDAV-UHFFFAOYSA-N potassium hydride Chemical compound [KH] NTTOTNSKUYCDAV-UHFFFAOYSA-N 0.000 description 1
- 229910000105 potassium hydride Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000012312 sodium hydride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 238000004809 thin layer chromatography Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C59/00—Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
- C07C59/40—Unsaturated compounds
- C07C59/76—Unsaturated compounds containing keto groups
- C07C59/90—Unsaturated compounds containing keto groups containing singly bound oxygen-containing groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US059,823 | 1979-07-23 | ||
| US06/059,823 US4220801A (en) | 1979-07-23 | 1979-07-23 | Process for making 4-aroyl-substituted phenoxyacetic acids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1137997A true CA1137997A (en) | 1982-12-21 |
Family
ID=22025500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000355311A Expired CA1137997A (en) | 1979-07-23 | 1980-07-03 | Process for making 4-aroyl-substituted phenoxyacetic acids |
Country Status (17)
| Country | Link |
|---|---|
| US (1) | US4220801A (OSRAM) |
| JP (1) | JPS5620543A (OSRAM) |
| AU (1) | AU534570B2 (OSRAM) |
| BE (1) | BE884414A (OSRAM) |
| CA (1) | CA1137997A (OSRAM) |
| CH (1) | CH644344A5 (OSRAM) |
| DE (1) | DE3027765A1 (OSRAM) |
| ES (1) | ES493563A0 (OSRAM) |
| FR (1) | FR2461694A1 (OSRAM) |
| GB (1) | GB2055817A (OSRAM) |
| GR (1) | GR69715B (OSRAM) |
| IT (1) | IT1132221B (OSRAM) |
| NL (1) | NL8004211A (OSRAM) |
| NZ (1) | NZ194269A (OSRAM) |
| PH (1) | PH15325A (OSRAM) |
| SE (1) | SE434512B (OSRAM) |
| ZA (1) | ZA804134B (OSRAM) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GR75464B (OSRAM) * | 1981-04-24 | 1984-07-20 | Ciba Geigy |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4069344A (en) * | 1972-05-10 | 1978-01-17 | Ciba-Geigy Corporation | Insecticidal substituted phenyl derivatives |
| JPS5195049A (en) * | 1975-02-12 | 1976-08-20 | * **********so*****no***tsu*****************************************ni*no | |
| US4058559A (en) * | 1975-09-24 | 1977-11-15 | Abbott Laboratories | 4-Aroyl-substituted phenoxy acetic acids |
-
1979
- 1979-07-23 US US06/059,823 patent/US4220801A/en not_active Expired - Lifetime
-
1980
- 1980-07-03 CA CA000355311A patent/CA1137997A/en not_active Expired
- 1980-07-08 GB GB8022301A patent/GB2055817A/en not_active Withdrawn
- 1980-07-08 NZ NZ194269A patent/NZ194269A/xx unknown
- 1980-07-09 ZA ZA00804134A patent/ZA804134B/xx unknown
- 1980-07-09 PH PH24259A patent/PH15325A/en unknown
- 1980-07-11 AU AU60344/80A patent/AU534570B2/en not_active Ceased
- 1980-07-16 SE SE8005205A patent/SE434512B/sv unknown
- 1980-07-19 GR GR62504A patent/GR69715B/el unknown
- 1980-07-21 ES ES493563A patent/ES493563A0/es active Granted
- 1980-07-22 DE DE19803027765 patent/DE3027765A1/de not_active Withdrawn
- 1980-07-22 CH CH560080A patent/CH644344A5/fr not_active IP Right Cessation
- 1980-07-22 JP JP9945080A patent/JPS5620543A/ja active Pending
- 1980-07-22 IT IT23618/80A patent/IT1132221B/it active
- 1980-07-22 FR FR8016152A patent/FR2461694A1/fr active Granted
- 1980-07-22 NL NL8004211A patent/NL8004211A/nl not_active Application Discontinuation
- 1980-07-22 BE BE0/201481A patent/BE884414A/fr not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| SE434512B (sv) | 1984-07-30 |
| NL8004211A (nl) | 1981-01-27 |
| GB2055817A (en) | 1981-03-11 |
| SE8005205L (sv) | 1981-01-24 |
| CH644344A5 (fr) | 1984-07-31 |
| AU534570B2 (en) | 1984-02-09 |
| JPS5620543A (en) | 1981-02-26 |
| AU6034480A (en) | 1981-01-29 |
| BE884414A (fr) | 1981-01-22 |
| IT1132221B (it) | 1986-06-25 |
| DE3027765A1 (de) | 1981-02-19 |
| ZA804134B (en) | 1981-07-29 |
| FR2461694B1 (OSRAM) | 1983-04-01 |
| ES8106691A1 (es) | 1981-09-01 |
| FR2461694A1 (fr) | 1981-02-06 |
| IT8023618A0 (it) | 1980-07-22 |
| PH15325A (en) | 1982-11-24 |
| US4220801A (en) | 1980-09-02 |
| ES493563A0 (es) | 1981-09-01 |
| GR69715B (OSRAM) | 1982-07-09 |
| NZ194269A (en) | 1982-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20010030712A (ko) | 항엽산제 제조에 유용한 방법 및 중간체 | |
| JP3586288B2 (ja) | ビフェニル誘導体の製法 | |
| US4480102A (en) | 2,3-Difluoro-5-(trifluoromethyl)pyridine and methods of making and using the same | |
| US4144397A (en) | Preparation of 2-aryl-propionic acids by direct coupling utilizing a mixed magnesium halide complex | |
| CA1137997A (en) | Process for making 4-aroyl-substituted phenoxyacetic acids | |
| KR870000205B1 (ko) | 페녹시 알칸디온 유도체의 제조방법 | |
| JPH0134219B2 (OSRAM) | ||
| EP0153701B1 (en) | Process for the preparation of optically active alpha-arylalkanoic acids | |
| JP2780786B2 (ja) | プロペン酸誘導体の製造方法 | |
| US4692545A (en) | Method for preparation of mercaptobenzoates | |
| JP3012705B2 (ja) | （２−ヒドロキシフェニル）酢酸の製造方法 | |
| JP3663427B2 (ja) | シアノフルオロフェノ−ルの製造方法 | |
| US4625035A (en) | 2,3-difluoro-5-(trifluoromethyl)pyridine | |
| JPH11501314A (ja) | スチルベンジカルボン酸のエステル類の調製方法 | |
| EP0179487B1 (en) | 2-phenylpropionic acid esters, method for optical resolution thereof and optically active substance thereof | |
| US4252979A (en) | Terephthalic acid derivatives | |
| US3703597A (en) | Preparation of benzilic acid compounds | |
| US4339601A (en) | Terephthalic acid derivatives and process for preparing them | |
| EP0052903B1 (en) | Preparation of dihalovinylcyclopropane carboxylic acids | |
| US5614637A (en) | Process for preparing 1,3-dialkyl-5-hydroxyoxindoles and the ether derivatives thereof | |
| US5382682A (en) | Nitroanilides and their preparation | |
| JP3495417B2 (ja) | ２−アルコキシ−３，５−ジハロゲノ−６−ニトロ安息香酸類の製造方法 | |
| JPH07238061A (ja) | 芳香族メトキシカルボン酸メチルエステルの製造方法 | |
| JPH0656736A (ja) | ビス（２−ハロゲノ−４，５−ジフルオロ）ベンゾフェノン、及びそれを経る２−ハロゲノ−４，５−ジフルオロ安息香酸の新規な製造方法 | |
| JPH0141134B2 (OSRAM) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |