WO1998040376A1 - Verfahren zur herstellung von 1,4-disubstituierten piperidinverbindungen - Google Patents
Verfahren zur herstellung von 1,4-disubstituierten piperidinverbindungen Download PDFInfo
- Publication number
- WO1998040376A1 WO1998040376A1 PCT/CH1998/000091 CH9800091W WO9840376A1 WO 1998040376 A1 WO1998040376 A1 WO 1998040376A1 CH 9800091 W CH9800091 W CH 9800091W WO 9840376 A1 WO9840376 A1 WO 9840376A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- alkyl
- substituted
- chlorine
- fluorine
- compound
- Prior art date
Links
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
- C07D401/04—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 directly linked by a ring-member-to-ring-member bond
Definitions
- the present invention relates to a new process for the preparation of 1,4-disubstituted piperidine compounds, in particular 4- (5,6-dihydro-1 lH-benzo [5,6] cyclohepta [1, 2-b] pyridine-1 l-ylidene) -l -piperidine compounds.
- the compound 4- (8-chloro-5,6-dihydro-1 lH-benzo [5,6] cyclohepta [1,2, b-pyridine-1 l-ylidene) -l-piperidinecarboxylic acid, ethyl ester is of particular importance (Loratadine) obtained as a ⁇ i antihistamine.
- Various processes for the preparation of these compounds are described in the literature. However, the known methods have various disadvantages.
- the process according to the present invention has only a few process steps overall and does not require an intermediate protective group on the piperidine nitrogen, a comparatively high yield being achieved.
- the process according to the invention has no process steps which are critical for production. There are also no reagents or solvents to be labeled as toxic, but at most less toxic or irritating ones, it being possible for all reactions to be carried out at reaction temperatures which are conventional per se and in systems which are conventional per se. All products obtained in the process are obtained in crystalline form. No substances that are problematic for the environment are used, produced or formed as intermediate products.
- the metals titanium and zinc used result from the reaction as non-toxic and easily reusable or disposable titanium oxides and zinc (II) tetramine complexes.
- the present invention relates to a process for the preparation of 1,4-disubstituted piperidine compounds of the formula (I) w o ⁇ n R independently of one another hydrogen; Fluorine, chlorine, bromine; straight-chain or branched (-C-C5) -Al yl, which is optionally substituted with fluorine, chlorine or bromine, with a (C-C5) -alkyl ether group and / or with phenyl; straight-chain or branched (C2-C5) alkenyl, which optionally with fluorine, chlorine or bromine, with a (-C-C5) alkyl ether group and / or
- Phenyl is substituted; Phenyl, optionally with fluorine, chlorine, bromine, (C 1 -C 5 ) alkyl, -COOH, (C 1 -C 5 ) alkyl ester, -NH 2 , a mono- (-C-C5) alkyl -substituted amine and / or a di- (C] -C5) alkyl-substituted amine; a heteroaromatic compound which is bonded directly or via straight-chain or branched (C 1 -C 5) alkylene to the pyridine and / or the phenyl ring and contains an oxygen atom and / or a sulfur atom and / or 1, 2 or 3 nitrogen atoms and a 5- or 6-membered ring system, which optionally with fluorine, chlorine, bromine, (-C-C5) alkyl, -COOH, (C 1 -C 5 ) alkyl ester, -NH 2 , a mono-
- Y - (CH 2 ) n -, where n 0, 1, 2 or 3; Oxygen; Sulfur; Vinyl; -CH2-O-; -O-CH2-; -CH 2 -S- or -S-CH 2 ; independently of one another hydrogen; -C (0) R ! ; - C (0) OR ': - (0) S (0) R2; or one of the meanings of Rl;
- R 1 independently of one another straight-chain or branched (C j-C5) -alkyl, which optionally with fluorine, chlorine or bromine, with a (C 1-C5) -
- R2 one of the meanings of R *; or a bridged saturated isocyclic system, which is preferably derived from camphorsulfonic acids;
- Z has the meaning given above, in a single process step by means of reductive dimerization (i) in the presence of a finely divided metal of IV. and'Or V. and / or VI. Subgroup of the periodic table or a low-order oxidation level of such a corresponding metal compound, where (ü) the finely divided metal or the low-order oxidation level in situ using a reducing agent and (iii) in Generated presence of an inert solvent, the reducing agent is selected from the group of alkali metals, the metals of the II. Main group or II.
- Subgroup of the periodic table alloys of these metals, alloys of these metals with zinc, zinc-copper alloys, inclusion compounds of such metals with carbon, preferably potassium-graphite inclusion compounds, the metal hydrides, the salts of naphthalene anions or of higher polycyclic aromatics and the solvent is selected from the group of inert ethers, preferably 1,4-dioxane, 1,2-dimethoxyethane, tetrahydrofuran, Diethylene glycol dimethyl ether, tert-butyl methyl ether or the group of nitrogen-containing unsaturated heteroaromatics, preferably pyridine or tertiary amines, preferably Ti ⁇ äthylamin.
- inert ethers preferably 1,4-dioxane, 1,2-dimethoxyethane, tetrahydrofuran, Diethylene glycol dimethyl ether, tert-butyl methyl ether or the group of nitrogen-containing unsaturated heteroaro
- TiCl4 titanium tetrachloride
- TiClß unstable, oxidation-sensitive titanium trichloride
- Subgroup of the periodic system are particularly suitable titanium, zirconium, vanadium, molybdenum, tungsten and uranium, preferably using their halide compounds, preferably the chlorides.
- the use of titanium tetrachloride is preferred, a low-value stage of this compound or these compounds being produced in situ by means of a reduction mine.
- the reducing agent used is preferably zinc or alkali metals, preferably zinc, lithium, sodium or potassium; Metals of the II.
- Main or subgroup of the periodic table in particular magnesium or calcium; Alloys containing zinc, lithium, sodium, potassium, magnesium and / or calcium; Zinc-copper alloys; Inclusion compounds of zinc, lithium, sodium, potassium, magnesium and / or calcium with carbon, in particular potassium graphite inclusion compounds; Metal hydrides, especially alkali metal hydrides and alkaline earth metal hydrides, preferably calcium hydride, sodium borohydride or lithium aluminum hydride; Salts of naphthalide anions, preferably Lithiu naphtalid or sodium Naphtalid.
- the solvent used is preferably inert ether, preferably 1,4-dioxane, 1,2-dimethoxyethane, diethylene glycol dimethyl ether (diglye), tert-butyl methyl ether and nitrogen-containing unsaturated heteroaromatics, preferably pyridine or tertiary amines, preferably triethylamine. Tetrahydrofuran can also be used.
- the ratio of the compound of formula (II) (in (mol) equivalents) to the coupling metal compound (in equivalents, oxidation state +111 or + IV) in the reaction is preferably 3: 1 to 1: 100, preferably 1:
- the ratio of the reducing agent (in reduction equivalents) be the coupling metal compound (in equivalents, oxidation +111 or + IV) f projects into the endeavorsf ⁇ hrung preferably 1: 2 to 100: 1, preferably 2: 1.
- the reaction temperature is 0 ° C to 200 ° C, preferably 10 ; C to 100 ° C and especially about 20 ° C to 70 ° C.
- R preferably and independently of one another is hydrogen, fluorine, chlorine, bromine, methyl or trifluoromethyl, particularly preferably R is independently of one another hydrogen, fluorine or chlorine.
- the compound of the film (I) preferably has two substituents R which are different from hydrogen, one substituent R each being on the pyridine ring and one substituent R being on the benzene ring and the latter substituent preferably being fixed in the 8-position.
- the compound of the formula (I) preferably has only one Substituents R, which is preferably in the 8-position and is preferably fluorine or chlorine.
- Y is -CH2-CH2-.
- R * preferably denotes (-C5) -alkyl and in particular ethyl.
- R 2 is (-C5) alkyl, benzyl, vinyl or dimethyla ino (- N (CH3) 2), in particular methyl.
- Z is preferably -C (0) R ! ; - C ⁇ OR 1 , preferably -C (0) OR l . Most preferably Z is a radical of the formula -C (0) 0-C2H5-
- (-C-C5) -Al yl means methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, tert.-
- alkenyl preferably means (C2-C3) alenyl and preferably C2-alkenyl.
- Preferred compounds of the formula (I) are 8-chloro-substituted
- the compound can be prepared in the formula (II), in which Y is -CH 2 -CH 2 -, in 4 stages. In a first stage, a cyanide-substituted compound of the formula (TV)
- R has the meaning given above, by means of a base-induced aldol condensation, preferably in the presence of potassium tert. -butyl at, with simultaneous saponification rmel (VI) implemented.
- the double bond of the compound of the formula (VI) is hydrogenated on a palladium catalyst without the other substituents which are located on the benzene ring being hydrogenated or split off.
- the amide of the formula (VII) is hydrolyzed in a basic medium, giving the carboxylic acid of the compound of the formula (VIII).
- the mixture is concentrated, taken up in 60 g of ethyl acetate and mixed with 100 g of a saturated aqueous solution of ethylenediamine-tetraacetic acid-tetranate ium salt dihydrate. After the evolution of heat has subsided, the organic phase is separated off and the aqueous phase is washed twice with 20 g of ethyl acetate. The aqueous phase is then treated with 30% hydrogen peroxide solution until the gray-colored, low-valent titanium compounds have completely reacted to the white titanium (IV) dioxide and is discarded. The combined organic phases are dried over sodium sulfate, filtered and evaporated to dryness. The product separates as a semi-crystalline syrup.
- Example 1 uses 40.0 g (160 mmol) of 8-chloro-5,6-dihydro-1 lH-benzo [5,6] cyclohepta [1, 2-b] pyridin-1 1-one and 27.4 g (160 mmol ) 1- (ethoxycarbonyl) -4-piperidone reacted with a coupling reagent consisting of 53.6g (820 mmol) zinc and 75.9g (400 mmol) titanium tetrachloride.
- Example 1 27.35 g (119 mmol) of 8-fluoro-5,6-dihydro-1 lH-benzo [5,6] cyclohepta [1, 2-b] pyridine-1 l-one and 20.0 g (1 17 mmol) of 1- (ethoxycarbonyl) -4-piperidone with a coupling reagent consisting of 37.0 g (566 mmol) of zinc and 50.9 g (268 mmol) of titanium tetachloride.
- the mixture is concentrated, taken up in 120 g of ethyl acetate and mixed with 250 g of a saturated aqueous solution of ethylenediamine-tetraacetic acid-tetan'anatrium salt dihydrate. After the development of heat has subsided, the organic phase is separated off and the aqueous phase is washed twice with 30 g of ethyl acetate. The aqueous phase is treated with 30% hydrogen peroxide solution until the gray-colored low-valent titanium compounds have completely reacted to the white titanium (IV) dioxide and are discarded. The combined organic phases are dried over sodium sulfate, filtered and evaporated to dryness.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Hydrogenated Pyridines (AREA)
- Plural Heterocyclic Compounds (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SK1249-99A SK124999A3 (en) | 1997-03-11 | 1998-03-06 | Process for preparing 1,4-disubstituted piperidine compounds |
AU60869/98A AU6086998A (en) | 1997-03-11 | 1998-03-06 | Process for preparing 1,4-disubstituted piperidine compounds |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH571/97 | 1997-03-11 | ||
CH00571/97A CH688412A5 (de) | 1997-03-11 | 1997-03-11 | Verfahren zur Herstellung von 1,4-disubstituierten Piperidinverbindungen. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998040376A1 true WO1998040376A1 (de) | 1998-09-17 |
Family
ID=4190095
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH1998/000091 WO1998040376A1 (de) | 1997-03-11 | 1998-03-06 | Verfahren zur herstellung von 1,4-disubstituierten piperidinverbindungen |
Country Status (5)
Country | Link |
---|---|
US (1) | US20020151714A1 (de) |
AU (1) | AU6086998A (de) |
CH (1) | CH688412A5 (de) |
SK (1) | SK124999A3 (de) |
WO (1) | WO1998040376A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006006858A1 (en) * | 2004-07-12 | 2006-01-19 | Willem Jacob Van Der Burg | Psychofarmaceutical preparation |
EP0970050B2 (de) † | 1997-02-26 | 2009-10-14 | Rolabo S.L. | Verfahren zur herstellung von 5,6-dihydro-11h-dibenzo(a,d)cyclohept-11-enen |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69919720D1 (de) * | 1998-07-24 | 2004-09-30 | Russinsky Ltd | Verfahren zur herstellung von benzocycloheptapyridin-11-one |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4731447A (en) * | 1985-05-13 | 1988-03-15 | Schering Corporation | Process for preparing piperidylidene dihydro-dibenzo(a,d)-cycloheptenes or aza-derivatives thereof |
EP0288640A1 (de) * | 1987-04-28 | 1988-11-02 | Schering Corporation | 6,11-Dihydro-11-(4-piperidyliden)-5H-benzo[5,6]cyclohepta[1,2-b]-pyrridine und Zusammensetzungen sowie Verfahren zur Verwendung |
WO1989010369A1 (en) * | 1988-04-28 | 1989-11-02 | Schering Corporation | Novel benzopyrido piperidine, piperidylidene and piperazine compounds, compositions, methods of manufacture and methods of use |
US5089496A (en) * | 1986-10-31 | 1992-02-18 | Schering Corporation | Benzo[5,6]cycloheptapyridine compounds, compositions and method of treating allergies |
EP0515158A1 (de) * | 1991-05-23 | 1992-11-25 | Schering Corporation | Benzopyridopiperidyliden-Verbindungen, Zusammensetzungen, Methoden zur Herstellung und Verwendung |
EP0524784A1 (de) * | 1991-07-23 | 1993-01-27 | Schering Corporation | Benzopyridopiperidyliden-Verbindungen, als PAF-Antagonisten |
-
1997
- 1997-03-11 CH CH00571/97A patent/CH688412A5/de not_active IP Right Cessation
-
1998
- 1998-03-06 US US09/380,835 patent/US20020151714A1/en not_active Abandoned
- 1998-03-06 AU AU60869/98A patent/AU6086998A/en not_active Abandoned
- 1998-03-06 WO PCT/CH1998/000091 patent/WO1998040376A1/de active Application Filing
- 1998-03-06 SK SK1249-99A patent/SK124999A3/sk unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4731447A (en) * | 1985-05-13 | 1988-03-15 | Schering Corporation | Process for preparing piperidylidene dihydro-dibenzo(a,d)-cycloheptenes or aza-derivatives thereof |
US5089496A (en) * | 1986-10-31 | 1992-02-18 | Schering Corporation | Benzo[5,6]cycloheptapyridine compounds, compositions and method of treating allergies |
EP0288640A1 (de) * | 1987-04-28 | 1988-11-02 | Schering Corporation | 6,11-Dihydro-11-(4-piperidyliden)-5H-benzo[5,6]cyclohepta[1,2-b]-pyrridine und Zusammensetzungen sowie Verfahren zur Verwendung |
WO1989010369A1 (en) * | 1988-04-28 | 1989-11-02 | Schering Corporation | Novel benzopyrido piperidine, piperidylidene and piperazine compounds, compositions, methods of manufacture and methods of use |
EP0515158A1 (de) * | 1991-05-23 | 1992-11-25 | Schering Corporation | Benzopyridopiperidyliden-Verbindungen, Zusammensetzungen, Methoden zur Herstellung und Verwendung |
EP0524784A1 (de) * | 1991-07-23 | 1993-01-27 | Schering Corporation | Benzopyridopiperidyliden-Verbindungen, als PAF-Antagonisten |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0970050B2 (de) † | 1997-02-26 | 2009-10-14 | Rolabo S.L. | Verfahren zur herstellung von 5,6-dihydro-11h-dibenzo(a,d)cyclohept-11-enen |
WO2006006858A1 (en) * | 2004-07-12 | 2006-01-19 | Willem Jacob Van Der Burg | Psychofarmaceutical preparation |
Also Published As
Publication number | Publication date |
---|---|
US20020151714A1 (en) | 2002-10-17 |
AU6086998A (en) | 1998-09-29 |
CH688412A5 (de) | 1997-09-15 |
SK124999A3 (en) | 2000-05-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3036390A1 (de) | Neue pyrrolo-pyrimidine, verfahren zu ihrer herstellung und ihre verwendung bei der herstellung von biologischen wirkstoffen | |
EP0606065B1 (de) | Verfahren zur Herstellung von Biphenylderivaten | |
WO1998040376A1 (de) | Verfahren zur herstellung von 1,4-disubstituierten piperidinverbindungen | |
DE4220065A1 (de) | Verfahren zur Herstellung von Pyrimidin-Derivaten | |
DE4341605C2 (de) | Verfahren zur Herstellung homochiraler Aminoalkohole | |
DE2661028C2 (de) | ||
DE4120322A1 (de) | Aminomethyl-substituierte 2,3-dihydropyrano(2,3-b)pyridine, verfahren zu ihrer herstellung und ihre verwendung in arzneimitteln | |
DE2628469C3 (de) | Verfahren zur Herstellung von γ -Aminoalkoholen | |
DE69818988T2 (de) | 9,10-diazatryclo[4.2.11 2,5]decan- und 9,10-diazatricyclo[3.3.1.1 2,6]decanderive mit analgetischer wirkung | |
DE2532221A1 (de) | 3,3a,4,5,6,7-hexahydro-2h-pyrazolo eckige klammer auf 4,3-c eckige klammer zu pyridin-derivate | |
DE2813015C2 (de) | Verfahren zur Herstellung von Apovincaminsäureestern | |
EP0360293B1 (de) | Verfahren zur Herstellung von 4,5,6,7-Tetrahydrothieno-[3,2-c]-Pyridinen | |
EP0189898A1 (de) | 1,6-Naphthyridinon-Derivate und Verfahren zu deren Herstellung | |
DE2604248C2 (de) | Verfahren zur Herstellung von Thienopyridinderivaten | |
JPH0665213A (ja) | ジシアノピラジン誘導体及びその製造方法 | |
AT338279B (de) | Verfahren zur herstellung von 1-alkyl-4-phenyl- bzw. -4-(2'-thienyl)-2(1h)-chinazolinonen | |
DE69819315T2 (de) | Verfahren zur herstellung von piperidincarbonsäureamiden | |
DE2230450A1 (de) | Verfahren zur herstellung von 4phenyl-6,7-methylendioxy-2(1h)-chinazolinonen | |
AT360537B (de) | Verfahren zur herstellung neuer 1,4-dihydro- pyridinderivate | |
EP1000026A1 (de) | Spezielle 3-azabicyclo 3.1.0]hexane, verfahren zu deren herstellung und modifizierung sowie deren verwendung | |
DE4211531A1 (de) | Verfahren zur Herstellung von Pyrrolderivaten | |
DE3226050A1 (de) | Verfahren zur herstellung von 6-(3,6-dihydro-1(2h)- pyridyl) pyrimidin-3-oxiden | |
JPS638373A (ja) | 水素化1−フェノキシアルキルピリジン−3−カルボン酸化合物 | |
DE3714438A1 (de) | Optisch aktive dihydropyridinlactone, verfahren zu ihrer herstellung und ihre verwendung | |
DE19707199A1 (de) | Neues Verfahren zur Herstellung von Cycloalkanopyridinen |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM GW HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 124999 Country of ref document: SK |
|
WWE | Wipo information: entry into national phase |
Ref document number: 09380835 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref document number: 1998539020 Country of ref document: JP |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
122 | Ep: pct application non-entry in european phase | ||
NENP | Non-entry into the national phase |
Ref country code: CA |