DK157014B - Fremgangsmaade til fremstilling af halogensubstituerede pyridiner - Google Patents
Fremgangsmaade til fremstilling af halogensubstituerede pyridiner Download PDFInfo
- Publication number
- DK157014B DK157014B DK017784A DK17784A DK157014B DK 157014 B DK157014 B DK 157014B DK 017784 A DK017784 A DK 017784A DK 17784 A DK17784 A DK 17784A DK 157014 B DK157014 B DK 157014B
- Authority
- DK
- Denmark
- Prior art keywords
- process according
- catalyst
- substituted pyridines
- organic amine
- procedure
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/61—Halogen atoms or nitro radicals
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyridine Compounds (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Description
DK 157014 B
Opfindelsen angâr fremsti11ing af ha 1ogensubstituerede pyridi-ner ved en base- og/eller overgangsmetal-katalyseret ringslut-ning af subst i tuerede 5-oxo-pentan-l-ni tri 1er.
5 Europæisk patentansogning nr. 46.735 omhandler fremstilling af chlorpyridiner substitueret med methyl-, trichlormethy1 - eller trif 1uormethylgrupper ved addition af det tilsvarende aldehyd til acrylonitri1, methacrylonitri 1 eller α-trifluormethacrylo-nitril i nærværelse af en katalysator, samt cyklisering af det 10 fremkomne mellemprodukt i nærværelse af hydrogenchlorid eller et stof, som danner hydrogenchlorid under reaktionsbetingel-serne. Ved den omhandlede fremgangsmàde kan man sâledes frem-stille 2,3-dichlor-5-methylpyridin ved cyklisering af 2,4-di-chlor-4-methyl-5-oxopentannitri 1 i nærværelse af hydrogench1o-15 rid med Cu-pulver som katalysator ved 150°C og i et udbytte pâ 65 %.
Opfindelsen angâr en fremgangsmàde til fremstiΠing af halo-gensubstituerede pyridiner med formlen: 20 25 hvori R* er Cj-C^alkyl, phenyl eller hydrogen, R2 er Cl eller Br, og R3 er Cl, Br eller F, og fremgangsmàden er ejendommelig ved, at den omfatter cyklisering af en forbindelse med form-1 en : 30 R2 R3
I I
Rl-C-CH2-C-H
I I
35 CHO CN
hvori Rl, R2 og R3 er som ovenfor anfart, i nærværelse af en katalytisk mængde af mindst én basisk organisk amin og/eller 2
DK 157 014 B
en overgangsmetalkatalysator ved en temperatur i intervallet 25 til 250°C og i nærværelse af et indifferent polært oplos-ni ngsmiddel.
5 Ved fremgangsmâden ifalge opfindelsen opnâs den onskede for-bindelse i et udbytte pâ mere end 70%.
Forbindelserne fremstillet ved fremgangsmâden if0lge opfindelsen anvendes fordelagtigt som me!lemprodukter til fremstillin-10 gen af forbindelser med insekticid og/eller herbicid virkning, f.eks. som beskrevet i europæisk patentansogning nr. 46.735.
Reaktionen kan udfores ved en hvilken som helst temperatur fra 25°C til 250*C, men udfores fortrinsvis ved temperaturer pâ 70 15 - 250°C og helst ved temperaturer pâ 200 - 220°C.
Enhver basisk organisk amin, sâsom f.eks. ethylamin, methyl-amin og cyklohexylamin, kan anvendes, selv om isopropylamin foretrækkes.
20
Overgangsmetalkatalysatoren kan være enhver overgangsmetalkatalysator, sâsom f.eks. NiCl2- eller CoCl2((06Η5)3Ρ)2· Den fo-retrukne katalysator er nikkeldichlor-bis(triphenylphosphin). Reaktionen udfæres som nævnt i et egnet indifferent polært op-25 lesningsmiddel, fortrinsvis et ni triloplosningsmiddel og helst acetoni tri1.
Opfindelsen illustreres yderligere af de felgende eksempler.
30 Eksempel 1. Fremstilling af 2,3-dichlor-5-methylpyridin.
En oplosning af 32,343 g 2,4-dichlor-4-methyl-5-oxopentanni-tril i 150 ml acetonitril og indeholdende 300 mg nikkel-di= chlor-bis(triphenylphosphin) pumpedes gennem et nikkelspi-35 ralror med et volumen pâ ca. 30 ml ved en hastighed pâ 2,0 - 2,5 ml/min.. Oplosningen var blevet forvarmet til 200 - 210°C ved et tryk pâ 1.825 kPa.
3
DK 157014 B
Gaskromatografisk analyse (G.C.) viste 90% omdannelse af alde-hyd med et udbytte af 2,3-dichlor-5-methylpyridin pâ 77%.
Eksempel 2.
5 Det ovenfor anforte eksperiment blev gentaget, med undtagelse af, at der anvendtes 30,908 g af oxonitrilen, og at opl0snîngen indeholdt 3 ml isopropylamin ud over nikkelkatalysatoren.
Analyse ved hjælp af G.C. viste en omdannelse pâ 94,3% og et udbytte pâ 23,9 g (90,1%).
10
Eksempel 3.
Det ovenfor anforte eksperiment blev gentaget, med undtagelse af, at der anvendtes 31,7 g af oxonitrilen, og ca. 1 vægt% 15 (3,1 g) isopropylamin anvendtes som den eneste katalysator.
Udbyttet var 80% (G.C.).
Eksempel 4.
2o En oplosning af 32,1 g 2,4-dichlor-4-methyl-5-oxopentannitril i 250 ml acetonitril indeholdende 3 ml isopropylamin og ca.
300 mg m'kkeldichlor-bis(tn'phenylphosphin) opvarmedes med tilbagesvaling i 48 timer. Det overskydende acetonitril fjern-edes dernæst ved vakuumdestillation, og remanensen kolbedestil-25 leredes ved 85 - 90°C og 5 mm Hg i et kugleror. Udbyttet var 27,0 g 2,3-dichlor-5-methylpyridin (86%), der var isoleret som et hvidt fast stof.
Eksempel 5.
30
En stamoplosning indeholdende 30 g 2,4-dichlor-4-methyl-5-oxopentannitril i 150 ml acetonitril fremstilledes, og por-tioner pâ 15 - 20 ml blev udtaget og anbragt i 50 ml Fisher-Porter-flasker. De anforte katalysatorer (20 μΐ) blev der-35 nasst hver for sig sat til de forskellige f lasker. Reaktions- blandingerne anbragtes dernæst i et oliebad, der var forvarmet til 185°C, og fik lov at reagere i den anforte tid, hvorefter de analyseredes ved gaskromatografi. Resultaterne var som folger:
Claims (7)
1. Fremgangsmâde til fremstilling af halogensubstituerede py-20 ridiner med formlen °T R2 25 hvori Rl er C^-C4-alkyl, phenyl eller hydrogen, R2 er Cl eller Br, og R3 er Cl, Br eller F, kendetegnet ved, at den omfatter cyklisering af en forbindelse med formlen 30 R2 R3 I I Rl-C-CH2-C-H I I
35 CHO CN hvori Rl, R2 og R3 er som ovenfor anfort, i nærværelse af en katalytisk mængde af mindst én basisk organisk amin og/eller DK 157014 B en overgangsmeta1kata1ysator ved en temperatur i intervallet 25 til 250°C og i nærværelse af et indifferent polært oplos-n i ngsm i dde1.
2. Fremgangsmâde if0lge krav 1, kendetegnet ved, at Rl er methyl, og r2 og R3 er Cl.
3. Fremgangsmâde ifolge krav 1, kendetegnet ved, at Rl er ethyl, og r2 og R3 er Cl. 10
4. Fremgangsmâde ifelge krav 1, kendetegnet ved, at den organiske amin er isopropy1 amin.
5. Fremgangsmâde ifolge krav 2, kendetegnet ved, 15 at katalysatoren er nikkeldichlor-bis(triphenylphosphin).
6. Fremgangsmâde ifolge krav 5, kendetegnet ved, at temperaturen er 70 - 250°C.
7. Fremgangsmâde if.olge krav 1, kendetegnet ved, at katalysatoren omfatter en organisk amin og nikkeldichlor-bis(triphenylphosphin). 25 30 35
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/436,231 US4435573A (en) | 1982-10-25 | 1982-10-25 | Process for the preparation of substituted pyridines |
US43623182 | 1982-10-25 |
Publications (4)
Publication Number | Publication Date |
---|---|
DK17784D0 DK17784D0 (da) | 1984-01-16 |
DK17784A DK17784A (da) | 1985-07-17 |
DK157014B true DK157014B (da) | 1989-10-30 |
DK157014C DK157014C (da) | 1990-03-26 |
Family
ID=23731634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK017784A DK157014C (da) | 1982-10-25 | 1984-01-16 | Fremgangsmaade til fremstilling af halogensubstituerede pyridiner |
Country Status (9)
Country | Link |
---|---|
US (1) | US4435573A (da) |
EP (1) | EP0149291B1 (da) |
JP (1) | JPS60152466A (da) |
KR (1) | KR900004040B1 (da) |
BR (1) | BR8400598A (da) |
DE (1) | DE3471302D1 (da) |
DK (1) | DK157014C (da) |
HU (1) | HU194173B (da) |
IL (1) | IL70659A (da) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0046735B1 (de) * | 1980-08-27 | 1984-12-12 | Ciba-Geigy Ag | Verfahren zur Herstellung von durch Methyl- oder Trifluormethylgruppen substituierten Chlorpyridinen |
DE3280205D1 (de) * | 1981-10-20 | 1990-08-09 | Ciba Geigy Ag | 5-halogenalkyl-pyridine. |
US4435573A (en) * | 1982-10-25 | 1984-03-06 | The Dow Chemical Company | Process for the preparation of substituted pyridines |
US5053516A (en) * | 1984-05-23 | 1991-10-01 | Ici Americas Inc. | Synthesis of 2-substituted-5-methylpyridines from methylcyclobutanecarbonitrile, valeronitrile and pentenonitrile intermediates |
US5084576A (en) * | 1985-12-20 | 1992-01-28 | The Dow Chemical Company | 2-hydrocarbyl-3,6-dichloropyridine compounds |
US5106984A (en) * | 1985-12-20 | 1992-04-21 | The Dow Chemical Company | 2-hydrocarbyl-3,6-dichloropyridines and their preparation |
IL86341A (en) * | 1988-05-11 | 1992-02-16 | Pamol Ltd | Preparation of polychloropyridine derivatives and intermediates therefor |
US4996323A (en) * | 1989-05-12 | 1991-02-26 | The Dow Chemical Company | Process for the preparation of 3,5,6-trichloropyridin-2-ol |
US5229519A (en) * | 1992-03-06 | 1993-07-20 | Reilly Industries, Inc. | Process for preparing 2-halo-5-halomethylpyridines |
CN113402452B (zh) * | 2021-07-29 | 2022-08-02 | 上海垚翀化工科技有限公司 | 一种制备2-氯-5-取代吡啶的方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4245098A (en) * | 1978-12-05 | 1981-01-13 | Ciba-Geigy Corporation | Process for producing 2,3,5-trichloropyridine, 2,4,4-trichloro-4-formyl-butyronitrile as a novel compound and a process for producing it |
ZA815906B (en) * | 1980-08-27 | 1982-08-25 | Ciba Geigy | Process for the production of chloropyridines substituted by methyl,trichloromethyl or trifluoromethyl groups |
EP0046735B1 (de) * | 1980-08-27 | 1984-12-12 | Ciba-Geigy Ag | Verfahren zur Herstellung von durch Methyl- oder Trifluormethylgruppen substituierten Chlorpyridinen |
US4435573A (en) * | 1982-10-25 | 1984-03-06 | The Dow Chemical Company | Process for the preparation of substituted pyridines |
-
1982
- 1982-10-25 US US06/436,231 patent/US4435573A/en not_active Expired - Lifetime
-
1984
- 1984-01-11 IL IL70659A patent/IL70659A/xx not_active IP Right Cessation
- 1984-01-16 DE DE8484300241T patent/DE3471302D1/de not_active Expired
- 1984-01-16 EP EP84300241A patent/EP0149291B1/en not_active Expired
- 1984-01-16 DK DK017784A patent/DK157014C/da not_active IP Right Cessation
- 1984-01-19 HU HU84202A patent/HU194173B/hu not_active IP Right Cessation
- 1984-01-20 JP JP59008402A patent/JPS60152466A/ja active Granted
- 1984-01-24 KR KR1019840000294A patent/KR900004040B1/ko not_active IP Right Cessation
- 1984-02-07 BR BR8400598A patent/BR8400598A/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0149291B1 (en) | 1988-05-18 |
DK157014C (da) | 1990-03-26 |
KR900004040B1 (ko) | 1990-06-09 |
HU194173B (en) | 1988-01-28 |
JPH0518827B2 (da) | 1993-03-15 |
HUT36803A (en) | 1985-10-28 |
DK17784D0 (da) | 1984-01-16 |
JPS60152466A (ja) | 1985-08-10 |
DE3471302D1 (en) | 1988-06-23 |
US4435573A (en) | 1984-03-06 |
KR850003397A (ko) | 1985-06-17 |
BR8400598A (pt) | 1985-09-17 |
IL70659A (en) | 1987-08-31 |
EP0149291A1 (en) | 1985-07-24 |
DK17784A (da) | 1985-07-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Korotaev et al. | Synthesis of 3‐substituted 2‐trifluoro (trichloro) methyl‐2H‐chromenes by reaction of salicylaldehydes with activated trihalomethyl alkenes | |
KR20100014384A (ko) | 특정 치환된 술필이민의 살충성 술폭시민으로의 산화 방법 | |
DK157014B (da) | Fremgangsmaade til fremstilling af halogensubstituerede pyridiner | |
US20080194830A1 (en) | Process for the preparation of 2-substituted-5-(1-alkylthio)alkylpyridines | |
EP2086936A2 (en) | Process for the preparation of 2-substituted-5-(1-alkylthio)alkylpyridines | |
Korotaev et al. | A simple and convenient synthesis of 4-methyl-3-nitro-2-trihalomethyl-2H-chromenes from N-unsubstituted imines of 2-hydroxyacetophenones and trichloro (trifluoro) ethylidene nitromethanes | |
AU2007346135B2 (en) | Process for the preparation of 2-substituted-5-(1-alkylthio) alkylpyridines | |
WO2018015489A1 (en) | Process for the preparation of phenylmalonic acid dinitriles | |
EP2831044B1 (en) | Methods for preparing 3-substituted-6-trifluoromethyl pyridines and methods for using 6-trichloromethyl halogenated pyridines | |
Ol'ga et al. | A novel thermal rearrangement of allenic imidothioates. Formation of iminocyclobutenes | |
CN111362880B (zh) | 一种含烷基和芳基嘧啶类化合物的合成方法 | |
NO176879B (no) | Fremgangsmåte ved fremstilling av pyridin-2-karboksamider | |
CN107098902B (zh) | 一种吡咯并[1,2-a]喹啉衍生物的合成方法 | |
Sulmon et al. | A new method for the preparation of β-(alkylamino)-carbonyl compounds by rearrangement of β-chloroimines via azetidine intermediates | |
CN113214182B (zh) | 一种苯并异噻唑类化合物及其制备方法 | |
AU781641B2 (en) | Process for the preparation of 2-cyanopyridines | |
EP0457912A1 (en) | METHOD FOR THE PREPARATION OF $g(a),$g(b)-UNSATURATED KETONES | |
Chambers et al. | Reactions involving fluoride ion. Part 42.1 Heterocyclic compounds from perfluoro-3, 4-dimethylhexa-2, 4-diene | |
CN111440091B (zh) | 一种(e)-2,2-二甲基-4-芳基-丁-3-烯腈类化合物的合成方法 | |
CN111533667B (zh) | 一种2,2-二甲基-4-苯基戊-4-烯腈类化合物的合成方法 | |
Carson et al. | " Abnormal" displacement in the reaction of 2-(N-methylpyrrolyl) methyltrimethylammonium salts with sodium cyanide | |
CA1264754A (en) | Process for the preparation of substituted pyridines | |
CN110028521B (zh) | 11-芳基-1,4-苯并恶嗪酮并咪唑啉类化合物及其制备方法和用途 | |
JP6928615B2 (ja) | 3−(ピリジル−2−アミノ)プロピオニトリル及びその類縁体の製造方法 | |
Segovia et al. | Tetrafluoroethylation of Electron‐Rich Alkenyl Iodides Enabled by in situ Generation of Solvent‐Stabilized “Ligandless” CuCF2CF2H |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PBP | Patent lapsed |