DE1967178C2 - Verfahren zur Herstellung von Chinuclidinyl-4-chinolinmethanolderivaten - Google Patents
Verfahren zur Herstellung von Chinuclidinyl-4-chinolinmethanolderivatenInfo
- Publication number
- DE1967178C2 DE1967178C2 DE1967178A DE1967178A DE1967178C2 DE 1967178 C2 DE1967178 C2 DE 1967178C2 DE 1967178 A DE1967178 A DE 1967178A DE 1967178 A DE1967178 A DE 1967178A DE 1967178 C2 DE1967178 C2 DE 1967178C2
- Authority
- DE
- Germany
- Prior art keywords
- racemic
- mixture
- benzene
- melting point
- preparation
- 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
- 238000002360 preparation method Methods 0.000 title claims description 18
- 238000000034 method Methods 0.000 title claims description 9
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 93
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 63
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 36
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 34
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 32
- 239000000203 mixture Substances 0.000 description 31
- 238000002844 melting Methods 0.000 description 28
- 230000008018 melting Effects 0.000 description 27
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 24
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 17
- LJOQGZACKSYWCH-LHHVKLHASA-N (s)-[(2r,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]-(6-methoxyquinolin-4-yl)methanol Chemical compound C1=C(OC)C=C2C([C@H](O)[C@H]3C[C@@H]4CCN3C[C@@H]4CC)=CC=NC2=C1 LJOQGZACKSYWCH-LHHVKLHASA-N 0.000 description 12
- 229910052757 nitrogen Inorganic materials 0.000 description 12
- 238000001953 recrystallisation Methods 0.000 description 12
- 239000012298 atmosphere Substances 0.000 description 11
- LJOQGZACKSYWCH-UHFFFAOYSA-N dihydro quinine Natural products C1=C(OC)C=C2C(C(O)C3CC4CCN3CC4CC)=CC=NC2=C1 LJOQGZACKSYWCH-UHFFFAOYSA-N 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- LOUPRKONTZGTKE-WZBLMQSHSA-N Quinine Chemical compound C([C@H]([C@H](C1)C=C)C2)C[N@@]1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OC)C=C21 LOUPRKONTZGTKE-WZBLMQSHSA-N 0.000 description 10
- 238000003756 stirring Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- 239000000706 filtrate Substances 0.000 description 9
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 8
- 125000000217 alkyl group Chemical group 0.000 description 8
- SIPUZPBQZHNSDW-UHFFFAOYSA-N bis(2-methylpropyl)aluminum Chemical compound CC(C)C[Al]CC(C)C SIPUZPBQZHNSDW-UHFFFAOYSA-N 0.000 description 8
- 229960004251 hydroquinine Drugs 0.000 description 8
- 238000006722 reduction reaction Methods 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 7
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 7
- LOUPRKONTZGTKE-UHFFFAOYSA-N cinchonine Natural products C1C(C(C2)C=C)CCN2C1C(O)C1=CC=NC2=CC=C(OC)C=C21 LOUPRKONTZGTKE-UHFFFAOYSA-N 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 7
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 6
- 235000001258 Cinchona calisaya Nutrition 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 5
- -1 methylenedioxy Chemical group 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 229960000948 quinine Drugs 0.000 description 5
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 239000012043 crude product Substances 0.000 description 4
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- 150000004678 hydrides Chemical class 0.000 description 4
- 229960000811 hydroquinidine Drugs 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- LOUPRKONTZGTKE-LHHVKLHASA-N quinidine Chemical compound C([C@H]([C@H](C1)C=C)C2)C[N@@]1[C@H]2[C@@H](O)C1=CC=NC2=CC=C(OC)C=C21 LOUPRKONTZGTKE-LHHVKLHASA-N 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 125000003342 alkenyl group Chemical group 0.000 description 3
- 125000003545 alkoxy group Chemical group 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 150000002430 hydrocarbons Chemical group 0.000 description 3
- 150000002576 ketones Chemical class 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-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
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229940027991 antiseptic and disinfectant quinoline derivative Drugs 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 2
- 150000004682 monohydrates Chemical class 0.000 description 2
- MUMZUERVLWJKNR-UHFFFAOYSA-N oxoplatinum Chemical compound [Pt]=O MUMZUERVLWJKNR-UHFFFAOYSA-N 0.000 description 2
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 2
- 229910003446 platinum oxide Inorganic materials 0.000 description 2
- 238000012746 preparative thin layer chromatography Methods 0.000 description 2
- 229960001404 quinidine Drugs 0.000 description 2
- 150000003248 quinolines Chemical class 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- WBQTXTBONIWRGK-UHFFFAOYSA-N sodium;propan-2-olate Chemical compound [Na+].CC(C)[O-] WBQTXTBONIWRGK-UHFFFAOYSA-N 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 238000004809 thin layer chromatography Methods 0.000 description 2
- LQIIEHBULBHJKX-UHFFFAOYSA-N 2-methylpropylalumane Chemical compound CC(C)C[AlH2] LQIIEHBULBHJKX-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- LJOQGZACKSYWCH-AFHBHXEDSA-N Hydroquinidine Natural products C1=C(OC)C=C2C([C@@H](O)[C@H]3C[C@@H]4CCN3C[C@@H]4CC)=CC=NC2=C1 LJOQGZACKSYWCH-AFHBHXEDSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 125000005234 alkyl aluminium group Chemical group 0.000 description 1
- 125000005011 alkyl ether group Chemical group 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 230000003288 anthiarrhythmic effect Effects 0.000 description 1
- 230000000078 anti-malarial effect Effects 0.000 description 1
- 239000003430 antimalarial agent Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 241001233037 catfish Species 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- MMFVFNVXXDFELX-UHFFFAOYSA-N chloroform;n,n-diethylethanamine Chemical compound ClC(Cl)Cl.CCN(CC)CC MMFVFNVXXDFELX-UHFFFAOYSA-N 0.000 description 1
- WDJQAYUPVJEQJW-UHFFFAOYSA-N chloroform;n,n-diethylethanamine;methanol Chemical compound OC.ClC(Cl)Cl.CCN(CC)CC WDJQAYUPVJEQJW-UHFFFAOYSA-N 0.000 description 1
- FHHZOYXKOICLGH-UHFFFAOYSA-N dichloromethane;ethanol Chemical compound CCO.ClCCl FHHZOYXKOICLGH-UHFFFAOYSA-N 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000001640 fractional crystallisation Methods 0.000 description 1
- 239000012458 free base Substances 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- DKAGJZJALZXOOV-UHFFFAOYSA-N hydrate;hydrochloride Chemical compound O.Cl DKAGJZJALZXOOV-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 125000004356 hydroxy functional group Chemical group O* 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 125000000468 ketone group Chemical group 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000401 methanolic extract Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 239000012279 sodium borohydride Substances 0.000 description 1
- 229910000033 sodium borohydride Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011916 stereoselective reduction Methods 0.000 description 1
- FZUJWWOKDIGOKH-UHFFFAOYSA-N sulfuric acid hydrochloride Chemical compound Cl.OS(O)(=O)=O FZUJWWOKDIGOKH-UHFFFAOYSA-N 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- ORGHESHFQPYLAO-UHFFFAOYSA-N vinyl radical Chemical compound C=[CH] ORGHESHFQPYLAO-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
- C07D401/06—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a carbon chain containing only aliphatic carbon 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
- C07D211/06—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
- C07D211/08—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 hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms
- C07D211/18—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 hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D211/34—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 hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms with hydrocarbon radicals, substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/92—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with a hetero atom directly attached to the ring nitrogen atom
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D453/00—Heterocyclic compounds containing quinuclidine or iso-quinuclidine ring systems, e.g. quinine alkaloids
- C07D453/02—Heterocyclic compounds containing quinuclidine or iso-quinuclidine ring systems, e.g. quinine alkaloids containing not further condensed quinuclidine ring systems
- C07D453/04—Heterocyclic compounds containing quinuclidine or iso-quinuclidine ring systems, e.g. quinine alkaloids containing not further condensed quinuclidine ring systems having a quinolyl-4, a substituted quinolyl-4 or a alkylenedioxy-quinolyl-4 radical linked through only one carbon atom, attached in position 2, e.g. quinine
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US74191368A | 1968-07-02 | 1968-07-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1967178C2 true DE1967178C2 (de) | 1984-11-22 |
Family
ID=24982727
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1967178A Expired DE1967178C2 (de) | 1968-07-02 | 1969-07-02 | Verfahren zur Herstellung von Chinuclidinyl-4-chinolinmethanolderivaten |
| DE19691933599 Ceased DE1933599A1 (de) | 1968-07-02 | 1969-07-02 | Chinolinderivate |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19691933599 Ceased DE1933599A1 (de) | 1968-07-02 | 1969-07-02 | Chinolinderivate |
Country Status (14)
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH590274A5 (enrdf_load_stackoverflow) * | 1970-03-16 | 1977-07-29 | Hoffmann La Roche | |
| GB1441244A (en) * | 1972-11-17 | 1976-06-30 | Rech Et Dapplications Scient S | Derivatives of quinoline and method of preparing the same |
| NL7908031A (nl) * | 1979-11-01 | 1981-06-01 | Acf Chemiefarma Nv | Nieuwe chinolinederivaten en farmaceutische preparaten die een dergelijke verbinding bevatten, alsmede werk- wijze voor het bereiden van deze verbindingen. |
| FR2844270B1 (fr) | 2002-09-11 | 2006-05-19 | Aventis Pharma Sa | Derives de la quinolyl propyl piperidine, leur procede et intermediaires de preparation et les compositions qui les contiennent |
| AU2011202542A1 (en) | 2010-07-14 | 2012-02-02 | Indian Institute Of Science | Benzothiophene carboxamide compounds, composition and applications thereof |
-
1969
- 1969-06-26 CH CH977369A patent/CH521975A/de not_active IP Right Cessation
- 1969-06-26 CH CH1402971A patent/CH533123A/de not_active IP Right Cessation
- 1969-07-01 BE BE735450D patent/BE735450A/xx not_active IP Right Cessation
- 1969-07-01 FR FR6922135A patent/FR2012151A1/fr not_active Withdrawn
- 1969-07-01 AT AT626969A patent/AT319481B/de not_active IP Right Cessation
- 1969-07-02 DK DK359169AA patent/DK136069B/da not_active IP Right Cessation
- 1969-07-02 DE DE1967178A patent/DE1967178C2/de not_active Expired
- 1969-07-02 DE DE19691933599 patent/DE1933599A1/de not_active Ceased
- 1969-07-02 IL IL32534A patent/IL32534A/xx unknown
- 1969-07-02 SE SE941269A patent/SE367823B/xx unknown
- 1969-07-02 SE SE7206590A patent/SE375775B/xx unknown
- 1969-07-02 GB GB33311/69A patent/GB1253741A/en not_active Expired
- 1969-07-02 CA CA055,885A patent/CA956312A/en not_active Expired
- 1969-07-02 IE IE903/69A patent/IE33474B1/xx unknown
- 1969-07-02 NL NL6910144.A patent/NL166475C/xx not_active IP Right Cessation
-
1971
- 1971-01-21 AT AT49171A patent/AT341115B/de not_active IP Right Cessation
- 1971-06-04 JP JP46039235A patent/JPS4915278B1/ja active Pending
- 1971-06-23 DK DK308971AA patent/DK136982B/da unknown
- 1971-11-01 CA CA126,551A patent/CA962682A/en not_active Expired
- 1971-12-16 PH PH13115A patent/PH12608A/en unknown
Non-Patent Citations (2)
| Title |
|---|
| J. American Chem.Soc., 67, 1945, 1428 * |
| Tetrahedron Letters, 1967, 3261 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DK136069C (enrdf_load_stackoverflow) | 1978-01-16 |
| DK136982B (da) | 1977-12-27 |
| SE367823B (enrdf_load_stackoverflow) | 1974-06-10 |
| NL166475C (nl) | 1981-08-17 |
| DK136069B (da) | 1977-08-08 |
| SE375775B (enrdf_load_stackoverflow) | 1975-04-28 |
| FR2012151A1 (enrdf_load_stackoverflow) | 1970-03-13 |
| NL166475B (nl) | 1981-03-16 |
| IL32534A (en) | 1975-07-28 |
| IE33474B1 (en) | 1974-07-10 |
| JPS4915278B1 (enrdf_load_stackoverflow) | 1974-04-13 |
| CA962682A (en) | 1975-02-11 |
| CH521975A (de) | 1972-04-30 |
| BE735450A (enrdf_load_stackoverflow) | 1970-01-02 |
| GB1253741A (en) | 1971-11-17 |
| IE33474L (en) | 1970-01-02 |
| NL6910144A (enrdf_load_stackoverflow) | 1970-01-06 |
| ATA49171A (de) | 1977-05-15 |
| AT341115B (de) | 1978-01-25 |
| DK136982C (enrdf_load_stackoverflow) | 1978-07-10 |
| PH12608A (en) | 1979-06-27 |
| AT319481B (de) | 1974-12-27 |
| DE1933599A1 (de) | 1970-02-26 |
| CH533123A (de) | 1973-01-31 |
| CA956312A (en) | 1974-10-15 |
| IL32534A0 (en) | 1969-09-25 |
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