CH484095A - Process for the preparation of new heterocyclic carboxylic acids - Google Patents
Process for the preparation of new heterocyclic carboxylic acidsInfo
- Publication number
- CH484095A CH484095A CH1807069A CH1807069A CH484095A CH 484095 A CH484095 A CH 484095A CH 1807069 A CH1807069 A CH 1807069A CH 1807069 A CH1807069 A CH 1807069A CH 484095 A CH484095 A CH 484095A
- Authority
- CH
- Switzerland
- Prior art keywords
- carboxylic acid
- formula
- group
- benzofuran
- halogen
- Prior art date
Links
- -1 heterocyclic carboxylic acids Chemical class 0.000 title claims description 19
- 238000000034 method Methods 0.000 title claims description 5
- 238000002360 preparation method Methods 0.000 title description 5
- 150000001875 compounds Chemical class 0.000 claims description 11
- 229910052736 halogen Inorganic materials 0.000 claims description 7
- 150000002367 halogens Chemical class 0.000 claims description 7
- 150000003839 salts Chemical class 0.000 claims description 6
- 125000000217 alkyl group Chemical group 0.000 claims description 5
- 150000007529 inorganic bases Chemical class 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 150000007530 organic bases Chemical class 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- 125000003545 alkoxy group Chemical group 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000007795 chemical reaction product Substances 0.000 claims description 2
- 125000001841 imino group Chemical group [H]N=* 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 239000011593 sulfur Chemical group 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 2
- 125000004429 atom Chemical group 0.000 claims 1
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 9
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 6
- 239000004480 active ingredient Substances 0.000 description 5
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Substances [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229920001592 potato starch Polymers 0.000 description 4
- 239000000454 talc Substances 0.000 description 4
- 229910052623 talc Inorganic materials 0.000 description 4
- IHZAGSISYYKXQJ-UHFFFAOYSA-N 1,4-dimethylindole-2-carboxylic acid Chemical compound CC1=CC=CC2=C1C=C(C(O)=O)N2C IHZAGSISYYKXQJ-UHFFFAOYSA-N 0.000 description 3
- IIYDTSAAECYHAE-UHFFFAOYSA-N 2-methylidenebutanoyl chloride Chemical compound CCC(=C)C(Cl)=O IIYDTSAAECYHAE-UHFFFAOYSA-N 0.000 description 3
- FDOKRIDWESVKTM-UHFFFAOYSA-N 4-chloro-5-(2-methylidenebutanoyl)-1H-indole-2-carboxylic acid Chemical compound ClC1=C2C=C(NC2=CC=C1C(C(CC)=C)=O)C(=O)O FDOKRIDWESVKTM-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- GUBGYTABKSRVRQ-QKKXKWKRSA-N Lactose Natural products OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)C(O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@H]1O GUBGYTABKSRVRQ-QKKXKWKRSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 229940075614 colloidal silicon dioxide Drugs 0.000 description 3
- 239000008101 lactose Substances 0.000 description 3
- 235000019359 magnesium stearate Nutrition 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 2
- OFFSPAZVIVZPHU-UHFFFAOYSA-N 1-benzofuran-2-carboxylic acid Chemical compound C1=CC=C2OC(C(=O)O)=CC2=C1 OFFSPAZVIVZPHU-UHFFFAOYSA-N 0.000 description 2
- VXZHQADIRFFCMJ-UHFFFAOYSA-N 4-chloro-1h-indole-2-carboxylic acid Chemical compound C1=CC=C2NC(C(=O)O)=CC2=C1Cl VXZHQADIRFFCMJ-UHFFFAOYSA-N 0.000 description 2
- PZOUSPYUWWUPPK-UHFFFAOYSA-N 4-methyl-1h-indole Chemical compound CC1=CC=CC2=C1C=CN2 PZOUSPYUWWUPPK-UHFFFAOYSA-N 0.000 description 2
- UWWHJLKVWYOXKR-UHFFFAOYSA-N 5-(2-methylidenebutanoyl)-1-benzofuran-2-carboxylic acid Chemical compound C=C(C(=O)C=1C=CC2=C(C=C(O2)C(=O)O)C1)CC UWWHJLKVWYOXKR-UHFFFAOYSA-N 0.000 description 2
- 244000215068 Acacia senegal Species 0.000 description 2
- 238000005727 Friedel-Crafts reaction Methods 0.000 description 2
- 229920000084 Gum arabic Polymers 0.000 description 2
- HCUARRIEZVDMPT-UHFFFAOYSA-N Indole-2-carboxylic acid Chemical compound C1=CC=C2NC(C(=O)O)=CC2=C1 HCUARRIEZVDMPT-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 2
- 229930006000 Sucrose Natural products 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000000205 acacia gum Substances 0.000 description 2
- 235000010489 acacia gum Nutrition 0.000 description 2
- 150000001732 carboxylic acid derivatives Chemical group 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 208000035475 disorder Diseases 0.000 description 2
- 239000008298 dragée Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 229920000159 gelatin Polymers 0.000 description 2
- 235000019322 gelatine Nutrition 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002431 hydrogen Chemical group 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000005720 sucrose Substances 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- IKMJGHPYOYVETB-UHFFFAOYSA-N 1,4-dioxane;ethyl acetate Chemical compound CCOC(C)=O.C1COCCO1 IKMJGHPYOYVETB-UHFFFAOYSA-N 0.000 description 1
- DYSJMQABFPKAQM-UHFFFAOYSA-N 1-benzothiophene-2-carboxylic acid Chemical compound C1=CC=C2SC(C(=O)O)=CC2=C1 DYSJMQABFPKAQM-UHFFFAOYSA-N 0.000 description 1
- MAHAMBLNIDMREX-UHFFFAOYSA-N 1-methylindole-2-carboxylic acid Chemical compound C1=CC=C2N(C)C(C(O)=O)=CC2=C1 MAHAMBLNIDMREX-UHFFFAOYSA-N 0.000 description 1
- SLAMLWHELXOEJZ-UHFFFAOYSA-N 2-nitrobenzoic acid Chemical compound OC(=O)C1=CC=CC=C1[N+]([O-])=O SLAMLWHELXOEJZ-UHFFFAOYSA-N 0.000 description 1
- CYTFMBZVPUBGMY-UHFFFAOYSA-N 3,6-dimethyl-5-(2-methylidenebutanoyl)-1-benzofuran-2-carboxylic acid Chemical compound CC1=C(OC2=C1C=C(C(=C2)C)C(C(CC)=C)=O)C(=O)O CYTFMBZVPUBGMY-UHFFFAOYSA-N 0.000 description 1
- RYPIRYIQTPHBCI-UHFFFAOYSA-N 4,6-dimethyl-1-benzofuran-2-carboxylic acid Chemical compound CC1=CC(C)=C2C=C(C(O)=O)OC2=C1 RYPIRYIQTPHBCI-UHFFFAOYSA-N 0.000 description 1
- YVEZTZZKJXJOEF-UHFFFAOYSA-N 4,6-dimethyl-5-(2-methylidenebutanoyl)-1-benzofuran-2-carboxylic acid Chemical compound CC1=C(C(=CC2=C1C=C(O2)C(=O)O)C)C(C(CC)=C)=O YVEZTZZKJXJOEF-UHFFFAOYSA-N 0.000 description 1
- UPUYXAOCRSQHJL-UHFFFAOYSA-N 4-chloro-5-(2-methylidenebutanoyl)-1-benzofuran-2-carboxylic acid Chemical compound ClC1=C(C=CC2=C1C=C(O2)C(=O)O)C(C(CC)=C)=O UPUYXAOCRSQHJL-UHFFFAOYSA-N 0.000 description 1
- QMSCXKCJGFIXDF-UHFFFAOYSA-N 4-methyl-1h-indole-2-carboxylic acid Chemical compound CC1=CC=CC2=C1C=C(C(O)=O)N2 QMSCXKCJGFIXDF-UHFFFAOYSA-N 0.000 description 1
- IPBNJWPJVRBOCK-UHFFFAOYSA-N 4-methyl-5-(2-methylidenebutanoyl)-1-benzofuran-2-carboxylic acid Chemical compound CC1=C(C=CC2=C1C=C(O2)C(=O)O)C(C(CC)=C)=O IPBNJWPJVRBOCK-UHFFFAOYSA-N 0.000 description 1
- FTWKTEYMZJWOSZ-UHFFFAOYSA-N 6-chloro-5-(2-methylidenebutanoyl)-1-benzofuran-2-carboxylic acid Chemical compound C=C(C(=O)C=1C(=CC2=C(C=C(O2)C(=O)O)C1)Cl)CC FTWKTEYMZJWOSZ-UHFFFAOYSA-N 0.000 description 1
- FRPJVIKXPDPKEW-UHFFFAOYSA-N 6-ethoxy-5-(2-methylidenebutanoyl)-1-benzofuran-2-carboxylic acid Chemical compound C(C)OC1=CC2=C(C=C(O2)C(=O)O)C=C1C(C(CC)=C)=O FRPJVIKXPDPKEW-UHFFFAOYSA-N 0.000 description 1
- PSBUPVYEUWGKHS-UHFFFAOYSA-N 6-methoxy-5-(2-methylprop-2-enoyl)-1-benzofuran-2-carboxylic acid Chemical compound COC1=CC2=C(C=C(O2)C(=O)O)C=C1C(C(C)=C)=O PSBUPVYEUWGKHS-UHFFFAOYSA-N 0.000 description 1
- VMQDSECUDLRTDK-UHFFFAOYSA-N 6-methyl-5-(3-methyl-2-methylidenebutanoyl)-1-benzofuran-2-carboxylic acid Chemical compound CC1=CC2=C(C=C(O2)C(=O)O)C=C1C(C(C(C)C)=C)=O VMQDSECUDLRTDK-UHFFFAOYSA-N 0.000 description 1
- GUBGYTABKSRVRQ-XLOQQCSPSA-N Alpha-Lactose Chemical compound O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@H]1O[C@@H]1[C@@H](CO)O[C@H](O)[C@H](O)[C@H]1O GUBGYTABKSRVRQ-XLOQQCSPSA-N 0.000 description 1
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- GJVQPEVJKAYSFZ-UHFFFAOYSA-N CCC(C(C(C=CC1=C2C(Cl)=C(C(O)=O)O1)=C2Cl)=O)=C Chemical compound CCC(C(C(C=CC1=C2C(Cl)=C(C(O)=O)O1)=C2Cl)=O)=C GJVQPEVJKAYSFZ-UHFFFAOYSA-N 0.000 description 1
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- JAWMENYCRQKKJY-UHFFFAOYSA-N [3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-ylmethyl)-1-oxa-2,8-diazaspiro[4.5]dec-2-en-8-yl]-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]methanone Chemical compound N1N=NC=2CN(CCC=21)CC1=NOC2(C1)CCN(CC2)C(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F JAWMENYCRQKKJY-UHFFFAOYSA-N 0.000 description 1
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- 235000020357 syrup Nutrition 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- SYRHIZPPCHMRIT-UHFFFAOYSA-N tin(4+) Chemical compound [Sn+4] SYRHIZPPCHMRIT-UHFFFAOYSA-N 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 230000036325 urinary excretion Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
- A61K31/34—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having five-membered rings with one oxygen as the only ring hetero atom, e.g. isosorbide
- A61K31/343—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having five-membered rings with one oxygen as the only ring hetero atom, e.g. isosorbide condensed with a carbocyclic ring, e.g. coumaran, bufuralol, befunolol, clobenfurol, amiodarone
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/77—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D307/78—Benzo [b] furans; Hydrogenated benzo [b] furans
- C07D307/82—Benzo [b] furans; Hydrogenated benzo [b] furans 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 carbon atoms of the hetero ring
- C07D307/84—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
- C07D307/85—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen attached in position 2
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
- C07D209/04—Indoles; Hydrogenated indoles
- C07D209/30—Indoles; Hydrogenated indoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to carbon atoms of the hetero ring
- C07D209/42—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
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- General Health & Medical Sciences (AREA)
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- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
- Furan Compounds (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Description
Verfahren zur Herstellung von neuen heterocyclischen Carbonsäuren
Die vorliegende Erfindung betrifft ein neues Verfahren zur Herstellung von neuen heterocyclischen Car bonsäuren.
Heterocyclische Carbonsäuren der Formel I,
EMI1.1
in welcher R eine niedere Alkylgruppe, X Sauerstoff, Schwefel, die Iminogruppe oder die Methyliminogruppe, Y Wasserstoff, Halogen bis Atomnummer. 35 oder die Methylgruppe und Z1 sowie Z2 Wasserstoff, Halogen bis Atomnummer 35, eine niedere Alkyl oder Alkoxy- gruppe bedeuten,sowieihreSalzemitanorganischen oder organischen Basen sind bisher nicht bekannt- geworden.
Wie nun gefunden wurde, besitzen die neuen Verbindungen wertvolle pharmakologische Eigenschaften.
Sie zeigen diuretische und saluretische Wirkung. Diese Eigenschaften kennzeichnen diese Verbindungen als geeignet zur Behandlung von Störungen, welche durch mangelhafte Ausscheidung von Elektrolyten, insbeson- dere von Natriumchlorid, bedingt sind. Solche Störungen sind die Ursache von Ödemen und Hypertonien. Diese Verbindungen, z.
B. die 4-Chlor-5-(2-methylen-butyryl) indol-2-carbonsäure, die 6-Methoxy-5- (2-methylen- butyryl)-benzofuran-2-carborDsäure und die 6-Methyl-5- (2-methylen-butyryl)-benzofuran-2-carbonsäure vermögen am Hund und am Kaninchen bei einer Dosierung von 10 mg/kg p. o. die Hamausscheiduag sowie die Ausscheidung der Natriumionen und der Chlorionen beträchtlich zu erhöhen.
In der heterocyclischen Carbonsäure der Formel 1 nimmt Z1 die 4- oder 6-Stellung und Z2 die 6-oder 7-Stellung ein. R, Z1 und Z2 bedeuten als niedere Alkylgruppen beispielsweise die Methyl-, Athyl-, Propyl-, Isopropyl-, Butyl-oder die tert.-Butylgruppe und Zi sowie Z2 als niedere A ! koxygruppen beispielsweise die Methoxy-, Athoxy-, Propoxy-, Isopropoxy-, Butoxyoder die sek.-Butoxygruppe.
Zur Herstellung von Verbindungen der Formel 1 nach dem erfindungsgemässen Vorfahren setzt man eine Verbindung der Formel II,
EMI1.2
in welcher X, Y. Z1 und Z2 due unter Formel I angegebene Bedeutung haben, mit einem Carbonsäurehalogenid der formel III,
EMI1.3
in welcher R die unter Formel 1 angegebene Bedeutung hat und Q ein Halogen bedeutet, nach Friedel-Crafts um und führt gewünschtenfalls das Reaktionsprodukt mit einer anorganischen oder organischen Base in ein Salz über.
Als Halogen ist Q vorzugsweise Chlor oder Brom.
Geeignete Katalysatoren für die Umsetzung nach Friedel- Crafts sind z. B. : insbosndere Aluminiumchlorid und Zinn- (IV)-chlmud, ferner Zinkchlorid, konzentrierte Schwefelsäure, phosphorsäure, Polyphosphorsäure oder Pyrophospborsäure. Die genanntem Säuren werden bevorzugt verwendet, wenn das Acylierungsmittel ein Carbonsäureamhydrid ist. Die Umsetzung wird vorzugsweise in einem Lösungsmittel vorgenommen.
Man kann als Lösungsmittel beispielsweise aliphatische oder cycloaliphatiscbe Kohlenwasserstoffe, wie Heptan oder Cyclohexan, Nitrokohlenwasserstoffe, wie Nitromethan, Nitrocyclohexan oder Nitrobenzol, oder Halogenkohlenwasserstoffe, wie Tetrachlorkohlenstoff, Äthylenchlorid, Methylenchlorid, o-Dichlorbenzol und ferner Schwefel- kohlenstoff einsetzen.
Als Ausgangsstoffe der Formel II eignen sich beispielsweise Verbindungen, deren Reste Y, Zi und Z2 2 mit den Gruppen übereinstimmen), die anschliessend an Formel I aufgezählt sind. Solche Verbindungen sind in der Literatur beschrieben, z. B. die Benzofuran-2carbonsäure [vergleiche R. Fittig et al., Annn. Chem.
216, 162 (1883)], die Benzothiophen-2-carbonsäure [vergleiche P. Friedländer et al., Chem. Ber. 45, 2087 (1912)], die Indol-2-carbonsäure [vergleiche W. Madelung, Chem. Ber. 45, 3521 (1912)], die 4-Chlor-indol-2- carbonsäure (vergleiche H. N. Rydon et al., J. Chem.
Soc. 1955, 3499), die 1-Methyl-indol-2-carbonsäure [vergleiche E, Fischer et al., Chem. Ber. 16, 2245 (1883)], die 6-Methylbenzofuranfi2-carbonsäure [ver- gleiche K. von Auwers, Ann. Chem. 408, 255 (1915)] und die 4, 6-Dimethyl-benzofuran-2-carbonsäure (vergleiche F. M. Dean et al., J. Chem. Soc. 1953, 1250).
Weitere Verbindungen von diesem Typus können analog hergestellt werden.
Die neuen Wirkstoffe oder die pharmazeutisch annehmbaren Salze derselben werden vorzugsweise peroral verabreicht. Zur Salzbildung können anorganische oder organische Basen, wie beispielsweise Alkali- oder Erdalkalihydroxide, Carbonate oder Bicarbonate, Triäthanolamin oder Chinolin, verwender werden. Die täglichen Dosen bewegen sich zwischen 50 und 1000 mg für er wachsene Patienten. Geeignete Doseneinheitsformen, wie Dragees, Tabletten, enthalten vorzugsweise 25 bis 500 mg eines erfindungsgemässen Wirkstoffes, und zwar 20 bis 80% einer Verbindung der Formel I. Zu ihrer Herstellung kombiniert man den Wirkstoff z.
B. mit festen pulverförmigen Trägerstoffen, wie Lactose, Saccharose, Sorbit, Mannit ; Stärken, wie Kartoffelstärke, Mais- stärke oder Amylopekbin, ferner Laminariapulver oder Citruspulpenpulver; Cellulosederivaten oder Gelatine, gegebenenfalls unter Zusatz von Gleitmitteln, wie Magnesium¯ odér Calciumstearat oder Polyäthylengly- kolen zu Tabletten oder zu Dragee-Kernen. Letztere überzieht man beispielsweise mit konzentrierten Zuckerlösungen, welche z. B. noch arabischen Gummi, Talk und/oder Titandioxid enthalten können, oder mit einem in leichtflüchtigen organischen Lösungsmitteln oder Lö sungsmittelgemischen gelösten Lack. Diesen Überzügen können Farbstoffe zugefügt werden, z.
B. zur Kennzeich- nung verschiedener wirkstoffdosen.
Die folgenden Vorschriften sollen die Herstellung von Tabletten und Dragées näher erläutern: a) 1000 g 4-Chlor-5-(2-methylen-butyryl)-indol-2carbonsäure werden mit 550 g Lactose und 292 g Kartoffelstärke vermischt, die Mischung mit einer wäss- rigen Lösung von 8 g Gelatine. befeuchtet und durch ein Sieb granuliert.
Nach dem Trocknen mischt man 60 g Katroffelstärke, 60 g Talk, 10 g Magnesiumstearat und 20 g kolloidales Siliciumdioxid zu und presst die Mischung zu 10 000 Tabletten von je 200 mg Gewicht und 100 mg Wirkstoffgehalt, die gewünschtenfalls mit Teilkerben zur feineren Anpassung der Dosierung versehen sein können. b) Aus 1000 g 5-(2-Methylen-butyryl)-benzofuran 2-carbonsäure, 379 g Lactose und der wässrigen Lösung von 6 Gelatime stellt man ein Granulat her, das man nach dem Trocknen mit 10 g kolloidalem Siliciumdioxid, 40 g Talk, 60 g Kartoffelstärke und 5 g Magnesiumstearat mischt und zu 10000 Dragee-Kernen presst.
Diese werden anschliessend mit einem konzentrierten Sirup aus 533, 5 g kristallisierter Saccharose, 20 g Schellack, 75 g arabischem Gummi, 250 g Talk, 20 g kolloidalem Silioiumdioxid und 1, 5 g Farbstoff über- zogen und getrocknet. Die erhaltenen Dragees wiegen je 240 mg und enthalten je 100 mg Wirkstoff.
Die nachfolgenden Beispiele erläutern die Herstel- lung der neuen Verbindungen der Formel 1 näher.
Die Temperaturen sind in Celsiusgraden angegeben.
Beispiel 1
8 g 4-Chlor-indol-2-carbonsäure (vergleiche H. N.
Rydon et al., J. Chem. Soc. 1955, 3499) werden in 40 ml Nitrobenzol aufgeschlämmt, auf 0 gekühlt und 20 g pulverisiertes Aluminiumchlorid portionenweise so zugegeben, dass die Temperatur nicht über 10 an- steigt. Man kühlt die Suspension auf 0 und fügt auf einmal 8 g 2-Methylen-butyrylchlorid zu. Dann wird das Gemisch innerhalb 20 Minuten auf 25 erwärmt, 45 Minuten bei dieser Temperatur gerührt und auf 200 g Eis sowie 30 ml konzentrierter Salzsäure gegossen.
Man extrahiert die salzsaure Suspension zweimal mit je 100 ml Äther. Der Ätherextrakt wird mit Wasser gewaschen und zweimal mit je 50 ml konzentrierter Natriumhydrogencarbonatlösung ausgezogen. Man säuert die Natriumhydrogencarbonatlösung mit konzentrierter Salzsäure auf pH 2 bis 3 an und extrahiert das ausge fallene Rohprodukt mit Äther. Die Ätherlösung wird über Magnesiumsulfat getrocknet, eingedampft undl der Rückstand durch Elutionschromatographie (Benzol Äther-Eisessig 900 : 80 : 20) an Silicagel gereinigt. Die erhaltene 4-Chlor-5- (2-methylen-butyryl)-indol-2-carbon- säure schmilzt bei 191 bis 192 .
Beispiel 2
Analog Beispiel 1 erhält man aus 4-Methyl-indol 2-carbonsäure [vergleiche R. Andrisano et al., CA 52, 6313e (1958) ; Gazz. chim. ital. 87, 949 (1957)] mit 2-Methylenbutyrylchlorid in Gegenwart von Aluminiumchlorid in Nitrobenzol die 4-Melyl-5-(2 methylen-butyr- yl)-indol-2-carbonsäure vom Smp. 194 bis 195 (aus Benzol).
Beispiel 3 a) Analog Beispiel 1 erhält man aus 1, 4-Dimethylindol-2-carbonsäure und 2-Methylen-butyrylchlorid in Gegenwart von Aluminiumchlorid in Nitrobenzol die 1, 4-DimethyI-5- (2-methylen-butyryl)-indol
2-carbonsäure vom Smp. 180 bis 181 (aus Essigsäureäthylester Benzol).
Der Ausgangsstoff, die 1, 4-Dimethyl-indol-2-carbonsäure, wird wie folgt hergestellt : b) Man riihrt 35 g Kaliumcarbonat, in 100 ml Aceton suspendiert, bei Rückflu#temperatur. In diese Suspension tropft man innerhalb 20 Minuten eine Lösung von 17, 5 g 4-Methyl-indol-2-carbonsäure [vergleiche R. Andrisano et al., Gazz. chim. ital. 87, 949 (1957) und 25 ml Dimcthylsulfat in 150 ml Aceton zu. Das Reaktionsgemisch wird 14 Stundem unter Rück- flu# gekocht, abgekühlt, der Niedershlag abfiltiert und mit Aceton gewaschen. Man dampft das Filtrat im Vakuum ein.
Der Rückstand, der rahe 1, 4-Dimethyl- indol-2-carbonsäure-methylester, wird mit 120 ml 2n Natronlauge und 60 ml Athanol 30 Minuten unter Rückfluss gekocht. Anschliessend kühlt man die Lösung ab, stellt das pH auf 2 ein, filtriert die ausgefallene, rohe Carbonsäure ab, wäscht sie mit Wasser und trocknet sie im Vakuum bei 60 . Nach Umkristallisieren aus Essigsäureäthylester-Dioxan erhält man 1, 4-Dimethyl- indol-2-carbonsäure vom Smp. 236 bis 237 .
In analoger Weise zu diesen Beispielen werden die folgenden Verbindungen erhalten :
4. 5- (2-Methylen-butyryl)-benzofuran-2-carbonsäure vom Smp. 128 bis 129 .
5. 3, 4-Dichlor-5-(2-methylen-butyryl)-benzofuran-2carbonsäure vom Smp. 210 bis 211 .
6. 1-Methyl-3, 4-dachlor-5- (2-methylen-butyryl)-indol- 2-carbonsäure vom Smp. 163 bis 164 .
7. 4-Methyl-5-(2-methylen-butyryl)-benzofuran-2carbonsäure vom Smp. 159 bis 160 .
8. 6-Methyl-5-(2-methylenWbutyryl)-benzofuran-2 carbonsäure vom Smp. 141 bis 142 .
9. 4, 6-Dimethyl-5(2-methylenbutyryl)-benzofuran 2-carbonsäure vom Smp. 208 bis 210 .
10. 4-Chlor-5- (2-methylenpropionyl)-benzothiophen- 2-carbontsäure vom Smp. 239 bis 241 .
11. 6-Methyl-5-(2-methylenLpropiyl)-benzofuran 2-carbonsäure vom Smp. 185 bis 186 .
12. 6-Methyl-5-(2-methylenLvaleroyl)-benzofuran-2- carbonsäure vom Smp. 160 bis 162 .
13. 6-Methyl-5-(2-methylen-3-methylbutyryl)-benzo furan-2-carbonsäure vom Smp. 153 bis 154 .
14. 6-Methoxy-5- (2-methylen-propionyl)-benzo- furan-2-carbonsäure vom Smp. 169 bis 170 .
15. 6-MKethoxy-5-(2-methylen-butyryl)-benzogfuran-2carbonsäure vom Smp. 153 bis 156 .
16. 6-Athoxy-5-(2-methylen-butyryl)-benzofuran-2 carbonsäure vom Smp. 143 bis 144 .
17. 6-Äthyl-5- (2-methylen-butyryl)-bezofuran-2carbonsäure vom Smp. 121 bis 122 .
18. 6-Chlorr5- (2-methylen-butyryl)-benzofuran-2- carbonsäure vom Smp. 188 bis 189 .
19. 4-Chlor-5- (2-methylen-butyryl)-benzofuran-2- carbonsäure vom Smp. 156 bis 158 .
20. 3, 6-Dimethyl-5-(2-methylen-butyryl)-benzofuran2-carbonsäure vom Smp. 153 bis 154 .
Process for the preparation of new heterocyclic carboxylic acids
The present invention relates to a new process for the preparation of new heterocyclic carboxylic acids.
Heterocyclic carboxylic acids of the formula I,
EMI1.1
in which R is a lower alkyl group, X is oxygen, sulfur, the imino group or the methylimino group, Y is hydrogen, halogen up to atomic number. 35 or the methyl group and Z1 and Z2 denote hydrogen, halogen up to atomic number 35, a lower alkyl or alkoxy group, and their salts with inorganic or organic bases have not yet become known.
As has now been found, the new compounds have valuable pharmacological properties.
They show diuretic and saluretic effects. These properties characterize these compounds as being suitable for the treatment of disorders which are caused by insufficient elimination of electrolytes, in particular sodium chloride. Such disorders are the cause of edema and hypertension. These compounds, e.g.
B. 4-chloro-5- (2-methylenebutyryl) indole-2-carboxylic acid, 6-methoxy-5- (2-methylenebutyryl) -benzofuran-2-carboric acid and 6-methyl-5- (2-methylenebutyryl) -benzofuran-2-carboxylic acid can be used in dogs and rabbits at a dosage of 10 mg / kg p. o. to increase the urinary excretion as well as the excretion of sodium ions and chlorine ions considerably.
In the heterocyclic carboxylic acid of the formula 1, Z1 is in the 4- or 6-position and Z2 is in the 6- or 7-position. R, Z1 and Z2 as lower alkyl groups mean, for example, the methyl, ethyl, propyl, isopropyl, butyl or the tert-butyl group and Zi and Z2 as lower A! koxy groups, for example the methoxy, ethoxy, propoxy, isopropoxy, butoxy or the sec-butoxy group.
For the preparation of compounds of the formula 1 according to the inventive method, a compound of the formula II is used
EMI1.2
in which X, Y. Z1 and Z2 have the meaning given under formula I, with a carboxylic acid halide of formula III,
EMI1.3
in which R has the meaning given under formula 1 and Q is a halogen, according to Friedel-Crafts and, if desired, converts the reaction product with an inorganic or organic base into a salt.
As a halogen, Q is preferably chlorine or bromine.
Suitable catalysts for the Friedel-Crafts reaction are, for. B.: especially aluminum chloride and tin (IV) -chlmud, also zinc chloride, concentrated sulfuric acid, phosphoric acid, polyphosphoric acid or pyrophosphoric acid. The acids mentioned are preferably used when the acylating agent is a carboxylic acid amhydride. The reaction is preferably carried out in a solvent.
As solvents, for example, aliphatic or cycloaliphatic hydrocarbons such as heptane or cyclohexane, nitro hydrocarbons such as nitromethane, nitrocyclohexane or nitrobenzene, or halogenated hydrocarbons such as carbon tetrachloride, ethylene chloride, methylene chloride, o-dichlorobenzene and furthermore can be used.
Examples of suitable starting materials of the formula II are compounds whose radicals Y, Zi and Z2 2 correspond to the groups) which are listed after formula I. Such compounds are described in the literature, e.g. B. the benzofuran-2carboxylic acid [compare R. Fittig et al., Annn. Chem.
216, 162 (1883)], benzothiophene-2-carboxylic acid [see P. Friedländer et al., Chem. Ber. 45, 2087 (1912)], indole-2-carboxylic acid [see W. Madelung, Chem. Ber. 45, 3521 (1912)], 4-chloro-indole-2-carboxylic acid (cf. H. N. Rydon et al., J. Chem.
Soc. 1955, 3499), 1-methyl-indole-2-carboxylic acid [see E, Fischer et al., Chem. Ber. 16, 2245 (1883)], 6-methylbenzofuranfi2-carboxylic acid [compare K. von Auwers, Ann. Chem. 408, 255 (1915)] and the 4, 6-dimethyl-benzofuran-2-carboxylic acid (compare F. M. Dean et al., J. Chem. Soc. 1953, 1250).
Further connections of this type can be made in the same way.
The new active ingredients or the pharmaceutically acceptable salts thereof are preferably administered orally. Inorganic or organic bases, such as, for example, alkali metal or alkaline earth metal hydroxides, carbonates or bicarbonates, triethanolamine or quinoline, can be used for salt formation. The daily doses range between 50 and 1000 mg for adult patients. Suitable dosage unit forms, such as dragees, tablets, preferably contain 25 to 500 mg of an active ingredient according to the invention, namely 20 to 80% of a compound of the formula I. To prepare them, the active ingredient is combined, for.
B. with solid powdery carriers such as lactose, sucrose, sorbitol, mannitol; Starches such as potato starch, corn starch or amylopecbin, furthermore laminaria powder or citrus pulp powder; Cellulose derivatives or gelatine, optionally with the addition of lubricants such as magnesium or calcium stearate or polyethylene glycols to form tablets or coated tablets. The latter is coated, for example, with concentrated sugar solutions, which z. B. can contain gum arabic, talc and / or titanium dioxide, or with a paint dissolved in volatile organic solvents or mixtures of solvents. Dyes can be added to these coatings, e.g.
B. for the identification of different drug doses.
The following rules are intended to explain the production of tablets and dragees in more detail: a) 1000 g of 4-chloro-5- (2-methylen-butyryl) -indole-2carboxylic acid are mixed with 550 g of lactose and 292 g of potato starch, the mixture with an aq - a solution of 8 g gelatin. moistened and granulated through a sieve.
After drying, add 60 g of potato starch, 60 g of talc, 10 g of magnesium stearate and 20 g of colloidal silicon dioxide and press the mixture into 10,000 tablets, each weighing 200 mg and containing 100 mg of active ingredient, which, if desired, have partial notches for fine adjustment of the dosage could be. b) From 1000 g of 5- (2-methylenebutyryl) -benzofuran-2-carboxylic acid, 379 g of lactose and the aqueous solution of 6 Gelatime, granules are produced which, after drying, are mixed with 10 g of colloidal silicon dioxide and 40 g of talc , Mixes 60 g potato starch and 5 g magnesium stearate and presses into 10,000 coated tablets.
These are then coated with a concentrated syrup of 533.5 g of crystallized sucrose, 20 g of shellac, 75 g of gum arabic, 250 g of talc, 20 g of colloidal silicon dioxide and 1.5 g of dye and dried. The coated tablets each weigh 240 mg and each contain 100 mg of active ingredient.
The following examples explain the preparation of the new compounds of formula 1 in more detail.
The temperatures are given in degrees Celsius.
example 1
8 g of 4-chloro-indole-2-carboxylic acid (compare H. N.
Rydon et al., J. Chem. Soc. 1955, 3499) are suspended in 40 ml of nitrobenzene, cooled to 0 and 20 g of powdered aluminum chloride are added in portions so that the temperature does not rise above 10. The suspension is cooled to 0 and 8 g of 2-methylene-butyryl chloride are added all at once. The mixture is then warmed to 25 within 20 minutes, stirred at this temperature for 45 minutes and poured onto 200 g of ice and 30 ml of concentrated hydrochloric acid.
The hydrochloric acid suspension is extracted twice with 100 ml of ether each time. The ether extract is washed with water and extracted twice with 50 ml of concentrated sodium hydrogen carbonate solution each time. The sodium hydrogen carbonate solution is acidified with concentrated hydrochloric acid to pH 2 to 3 and the crude product which has precipitated out is extracted with ether. The ether solution is dried over magnesium sulphate, evaporated and the residue is purified by elution chromatography (benzene ether-glacial acetic acid 900: 80: 20) on silica gel. The 4-chloro-5- (2-methylenebutyryl) indole-2-carboxylic acid obtained melts at 191 to 192.
Example 2
Analogously to Example 1, 2-carboxylic acid is obtained from 4-methyl-indole [compare R. Andrisano et al., CA 52, 6313e (1958); Gazz. chim. ital. 87, 949 (1957)] with 2-methylenebutyryl chloride in the presence of aluminum chloride in nitrobenzene, the 4-melyl-5- (2-methylenebutyryl) -indole-2-carboxylic acid of melting point 194 to 195 (from benzene) .
Example 3 a) As in Example 1, 1,4-dimethyl-5- (2-methylen-butyryl) -indole is obtained from 1,4-dimethylindole-2-carboxylic acid and 2-methylene-butyryl chloride in the presence of aluminum chloride in nitrobenzene
2-carboxylic acid with a melting point of 180 to 181 (from ethyl acetate, benzene).
The starting material, 1,4-dimethyl-indole-2-carboxylic acid, is prepared as follows: b) 35 g of potassium carbonate, suspended in 100 ml of acetone, are stirred at reflux temperature. A solution of 17.5 g of 4-methyl-indole-2-carboxylic acid is added dropwise to this suspension in the course of 20 minutes [compare R. Andrisano et al., Gazz. chim. ital. 87, 949 (1957) and 25 ml of dimethyl sulfate in 150 ml of acetone. The reaction mixture is refluxed for 14 hours, cooled, the precipitate is filtered off and washed with acetone. The filtrate is evaporated in vacuo.
The residue, the rough 1, 4-dimethylindole-2-carboxylic acid methyl ester, is refluxed for 30 minutes with 120 ml of 2N sodium hydroxide solution and 60 ml of ethanol. The solution is then cooled, the pH is adjusted to 2, the crude carboxylic acid which has precipitated is filtered off, washed with water and dried in vacuo at 60. After recrystallization from ethyl acetate-dioxane, 1,4-dimethylindole-2-carboxylic acid with a melting point of 236 to 237 is obtained.
The following compounds are obtained in a manner analogous to these examples:
4. 5- (2-Methylen-butyryl) -benzofuran-2-carboxylic acid of m.p. 128 to 129.
5. 3,4-Dichloro-5- (2-methylenebutyryl) -benzofuran-2carboxylic acid of m.p. 210 to 211.
6. 1-Methyl-3, 4-dachloro-5- (2-methylene-butyryl) -indole-2-carboxylic acid of m.p. 163 to 164.
7. 4-Methyl-5- (2-methylene-butyryl) -benzofuran-2-carboxylic acid of m.p. 159 to 160.
8. 6-Methyl-5- (2-methylenew-butyryl) -benzofuran-2-carboxylic acid of m.p. 141-142.
9. 4,6-Dimethyl-5 (2-methylenebutyryl) -benzofuran-2-carboxylic acid with a melting point of 208 to 210.
10. 4-Chloro-5- (2-methylenepropionyl) -benzothiophene-2-carbonic acid of m.p. 239-241.
11. 6-Methyl-5- (2-methylenelpropiyl) -benzofuran-2-carboxylic acid of m.p. 185 to 186.
12. 6-Methyl-5- (2-methylen-Lvaleroyl) -benzofuran-2-carboxylic acid of m.p. 160 to 162.
13. 6-Methyl-5- (2-methylen-3-methylbutyryl) -benzo furan-2-carboxylic acid of m.p. 153 to 154.
14. 6-Methoxy-5- (2-methylene-propionyl) -benzo-furan-2-carboxylic acid with a melting point of 169 to 170.
15. 6-MKethoxy-5- (2-methylenebutyryl) -benzogfuran-2carboxylic acid of m.p. 153-156.
16. 6-Ethoxy-5- (2-methylene-butyryl) -benzofuran-2-carboxylic acid of m.p. 143 to 144.
17. 6-Ethyl-5- (2-methylene-butyryl) -bezofuran-2-carboxylic acid of m.p. 121 to 122.
18. 6-chloro5- (2-methylenebutyryl) -benzofuran-2-carboxylic acid of m.p. 188-189.
19. 4-Chloro-5- (2-methylene-butyryl) -benzofuran-2-carboxylic acid of m.p. 156 to 158.
20. 3,6-Dimethyl-5- (2-methylen-butyryl) -benzofuran-2-carboxylic acid of m.p. 153 to 154.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1807069A CH484095A (en) | 1967-07-28 | 1967-07-28 | Process for the preparation of new heterocyclic carboxylic acids |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1076467A CH484092A (en) | 1967-07-28 | 1967-07-28 | Process for the preparation of new heterocyclic carboxylic acids |
CH1807069A CH484095A (en) | 1967-07-28 | 1967-07-28 | Process for the preparation of new heterocyclic carboxylic acids |
Publications (1)
Publication Number | Publication Date |
---|---|
CH484095A true CH484095A (en) | 1970-01-15 |
Family
ID=4366590
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1807069A CH484095A (en) | 1967-07-28 | 1967-07-28 | Process for the preparation of new heterocyclic carboxylic acids |
CH1806969A CH484094A (en) | 1967-07-28 | 1967-07-28 | Process for the production of new benzofuran derivatives and their salts |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1806969A CH484094A (en) | 1967-07-28 | 1967-07-28 | Process for the production of new benzofuran derivatives and their salts |
Country Status (15)
Country | Link |
---|---|
AT (4) | AT281811B (en) |
BG (2) | BG15387A3 (en) |
BR (1) | BR6800997D0 (en) |
CH (2) | CH484095A (en) |
CS (2) | CS153467B2 (en) |
DK (1) | DK121087B (en) |
FI (2) | FI49415C (en) |
GT (1) | GT197640170A (en) |
IE (1) | IE32222B1 (en) |
IL (1) | IL30442A (en) |
NO (1) | NO122751B (en) |
PL (1) | PL69796B1 (en) |
SE (1) | SE364270B (en) |
SU (1) | SU393827A3 (en) |
YU (1) | YU32705B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2467004C2 (en) * | 2010-10-07 | 2012-11-20 | Учреждение Российской Академии Наук Институт Нефтехимии И Катализа Ран | METHOD OF OBTAINING METHYL ESTER OF 2-BENZO[b]FURANCARBOXYLIC ACID |
-
1967
- 1967-07-28 CH CH1807069A patent/CH484095A/en not_active IP Right Cessation
- 1967-07-28 CH CH1806969A patent/CH484094A/en not_active IP Right Cessation
-
1968
- 1968-07-19 FI FI682063A patent/FI49415C/en active
- 1968-07-19 NO NO2865/68A patent/NO122751B/no unknown
- 1968-07-19 SE SE09915/68A patent/SE364270B/xx unknown
- 1968-07-19 FI FI682064A patent/FI49416C/en active
- 1968-07-19 DK DK351368AA patent/DK121087B/en unknown
- 1968-07-25 YU YU1783/68A patent/YU32705B/en unknown
- 1968-07-26 CS CS547268A patent/CS153467B2/cs unknown
- 1968-07-26 AT AT07301/68A patent/AT281811B/en not_active IP Right Cessation
- 1968-07-26 PL PL1968128332A patent/PL69796B1/pl unknown
- 1968-07-26 CS CS719771*1A patent/CS153468B2/cs unknown
- 1968-07-26 BG BG012203A patent/BG15387A3/en unknown
- 1968-07-26 BG BG012202A patent/BG15386A3/en unknown
- 1968-07-26 AT AT729868A patent/AT280272B/en not_active IP Right Cessation
- 1968-07-26 IL IL30442A patent/IL30442A/en unknown
- 1968-07-26 BR BR200997/68A patent/BR6800997D0/en unknown
- 1968-07-26 SU SU1415775A patent/SU393827A3/ru active
- 1968-07-26 IE IE904/68A patent/IE32222B1/en unknown
- 1968-07-26 AT AT446869A patent/AT283346B/en not_active IP Right Cessation
- 1968-07-26 AT AT06940/69A patent/AT285595B/en not_active IP Right Cessation
-
1976
- 1976-02-13 GT GT197640170A patent/GT197640170A/en unknown
Also Published As
Publication number | Publication date |
---|---|
FI49416B (en) | 1975-02-28 |
YU178368A (en) | 1974-12-31 |
YU32705B (en) | 1975-06-30 |
PL69796B1 (en) | 1973-10-31 |
CS153467B2 (en) | 1974-02-25 |
FI49416C (en) | 1975-06-10 |
BR6800997D0 (en) | 1973-01-02 |
BG15387A3 (en) | 1976-05-10 |
AT285595B (en) | 1970-11-10 |
BG15386A3 (en) | 1976-03-23 |
AT281811B (en) | 1970-06-10 |
SE364270B (en) | 1974-02-18 |
FI49415B (en) | 1975-02-28 |
IL30442A (en) | 1972-01-27 |
FI49415C (en) | 1975-06-10 |
IE32222L (en) | 1969-01-28 |
IL30442A0 (en) | 1968-11-27 |
DK121087B (en) | 1971-09-06 |
AT280272B (en) | 1970-04-10 |
AT283346B (en) | 1970-08-10 |
GT197640170A (en) | 1977-08-06 |
NO122751B (en) | 1971-08-09 |
SU393827A3 (en) | 1973-08-10 |
IE32222B1 (en) | 1973-05-16 |
CH484094A (en) | 1970-01-15 |
CS153468B2 (en) | 1974-02-25 |
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Legal Events
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PL | Patent ceased |