CH577973A5 - 4-Methyl-7-substd.-2(1H)-quinolones prepn. - by reacting 1,3-phenylenediamine with diketene - Google Patents
4-Methyl-7-substd.-2(1H)-quinolones prepn. - by reacting 1,3-phenylenediamine with diketeneInfo
- Publication number
- CH577973A5 CH577973A5 CH1349373A CH1349373A CH577973A5 CH 577973 A5 CH577973 A5 CH 577973A5 CH 1349373 A CH1349373 A CH 1349373A CH 1349373 A CH1349373 A CH 1349373A CH 577973 A5 CH577973 A5 CH 577973A5
- Authority
- CH
- Switzerland
- Prior art keywords
- acetic acid
- methyl
- diketene
- phenylenediamine
- quinoline
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
- C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
- C07D215/16—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms 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
- C07D215/38—Nitrogen atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Plural Heterocyclic Compounds (AREA)
Abstract
Quinolones of formula (I) (where R is H or CH3-CO-CH2-CO-) are prepd. by reacting 1,3-phenylene-diamine (II) (1 mol) with diketene(1 or 2 mol). The reaction is pref. carried out in ca 10% acetic acid or in an org. solvent contg. ca 5 wt. % acetic acid. Reaction temp. is pref. ca 100 degrees C, esp. ca 60-65 degrees C. (I) are useful as inters., esp. for pharmaceuticals and special pigments.
Description
Vorliegende Erfindung betrifft ein Verfahren zur Herstellung des neuen 1,2-Dihydro-2-oxo-4-methyl-7-acetessigsäure- amido-chinolin.
Das Hauptpatent betrifft ein Verfahren zur Herstellung von 1,2-Dihydro-2-oxo-4-methyl-7-amino-chinolin, das dadurch gekennzeichnet ist, dass 1 Mol Diketen mit 1 Mol m Phenylendiamin umgesetzt wird.
Es wurde nun gefunden, dass wenn nach dem Verfahren des Hauptpatentes statt 1 Mol Diketen 2 Mol dieses Ketendimeren eingesetzt werden, das 1,2-Dihydro-2-oxo-$methyl-7- -acetessigsäureamido-chinolin erhalten wird.
Die Verbindung kann auch mit 7-Acetoacetylamino-4 -methyl-chinolon-(2) oder 7-Acetoacetylamino-lepidon bezeichnet werden.
Das erfindungsgemässe Verfahren ist dadurch gekennzeichnet, dass 2 Mol Diketen mit 1 Mol m-Phenylendiamin umgesetzt werden. Die Umsetzung findet zweckmässig in Wasser unter Zusatz von Essigsäure als Katalysator, vorzugsweise in l0%iger Essigsäure, statt. Die obige Reaktion kann auch in organischen Lösungsmitteln, in denen die Ausgangsmaterialien löslich sind (z.B. Methanol, Butylacetat, Tetrachlorkohlenstoff, Toluol), unter Zusatz von ca. 5% Eisessig oder auch in Eisessig allein bei Temperaturen unterhalb 100 C, vorzugsweise bei 60 - 65"C, ohne Anwendung von Druck durchgeführt werden.
Beispiel
In einem Sulfierkolben, ausgerüstet mit Ankerrührer, Rückflusskühler, Tropftrichter, Thermometer und Wasserbad, werden 129,6 g mindestens 98%iges 1,3-Phenylendiamin (F 60 - 62"C), 750 ml 10%ige Essigsäure eingefüllt und bei Raumtemperatur unter Rühren 211,2 g Diketen im Verlaufe von 1 bis 1V2 Stunden zutropfen gelassen. Man lässt die Temperatur unter Zuhilfenahme der Reaktionswärme auf 60 - 65"C steigen. Nach beendeter Diketen-Zugabe wird noch 1 Stunde bei 60 - 650C nachreagieren gelassen und dann auf ca. 15"C abgekühlt. Das ausgefällte Produkt wird abgenutscht und im Vakuum bei 60 bis 70"C bis zur Gewichtskonstanz getrocknet.
Es werden 257 g rohes, fast farbloses 1,2-Dihydro-2-oxo-4-me- thyl-7-acetoacetamino-chinolin mit einem Schmelzpunkt von ca. 238"C erhalten, was einer Ausbeute von 83%, berechnet auf m-Phenylendiamin, entspricht.
Nach einmaligem Umkristallisieren aus 67%iger Essigsäure beträgt der Smp. 246,0 - 247,00C, nach nochmaliger Umkristallisation aus der verdünnten Essigsäure verändert sich der Smp. nicht mehr.
Das 1,2-Dihydro-2-oxo-4-methyl-7-acetessigsäureamido- -chinolin kann als Zwischenprodukt zur Herstellung von Spezialpigmenten verwendet werden.
PATENTANSPRUCH
Verfahren zur Herstellung von 1,2-Dihydro-2-oxo-4-methyl-7-acetessigsäure-chinolin, dadurch gekennzeichnet, dass 2 Mol Diketen mit 1 Mol m-Phenylendiamin umgesetzt werden.
UNTERANSPRÜCHE
1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass die Umsetzung in 10%der Essigsäure stattfindet.
2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass die Umsetzung in organischen Lösungsmitteln unter Zusatz von ca. 5 Gew.-% katalytisch wirkender Essigsäure durchgeführt wird.
3. Verfahren nach Patentanspruch und Unteransprüchen 1 und 2, dadurch gekennzeichnet, dass die Umsetzung vorzugsweise bei 60 - 65"C, höchstens aber unter Rückfluss, stattfindet.
**WARNUNG** Ende DESC Feld konnte Anfang CLMS uberlappen**.
The present invention relates to a process for the preparation of the new 1,2-dihydro-2-oxo-4-methyl-7-acetic acid amido-quinoline.
The main patent relates to a process for the preparation of 1,2-dihydro-2-oxo-4-methyl-7-amino-quinoline, which is characterized in that 1 mol of diketene is reacted with 1 mol of m phenylenediamine.
It has now been found that if, instead of 1 mole of diketene, 2 moles of this ketene dimer are used according to the process of the main patent, the 1,2-dihydro-2-oxo-methyl-7-acetoacetic acid amido-quinoline is obtained.
The compound can also be referred to as 7-acetoacetylamino-4-methyl-quinolone- (2) or 7-acetoacetylamino-lepidone.
The process according to the invention is characterized in that 2 mol of diketene are reacted with 1 mol of m-phenylenediamine. The reaction conveniently takes place in water with the addition of acetic acid as a catalyst, preferably in 10% acetic acid. The above reaction can also be carried out in organic solvents in which the starting materials are soluble (e.g. methanol, butyl acetate, carbon tetrachloride, toluene), with the addition of approx. 5% glacial acetic acid, or in glacial acetic acid alone at temperatures below 100 ° C., preferably at 60-65 "C, can be done without applying pressure.
example
In a sulphonation flask equipped with anchor stirrer, reflux condenser, dropping funnel, thermometer and water bath, 129.6 g of at least 98% 1,3-phenylenediamine (F 60-62 "C), 750 ml 10% acetic acid are poured and at room temperature under Stirring, 211.2 g of diketene are added dropwise over the course of 1 to 1/2 hours. The temperature is allowed to rise to 60-65 ° C. with the aid of the heat of reaction. When the addition of diketene is complete, the reaction mixture is left to react for a further 1 hour at 60-650C and then cooled to about 15 "C. The precipitated product is suction filtered and dried in vacuo at 60-70" C to constant weight.
257 g of crude, almost colorless 1,2-dihydro-2-oxo-4-methyl-7-acetoacetamino-quinoline with a melting point of about 238 ° C. are obtained, which corresponds to a yield of 83%, calculated on m -Phenylenediamine.
After one recrystallization from 67% acetic acid, the m.p. is 246.0-247.00C; after another recrystallization from the dilute acetic acid, the m.p. no longer changes.
The 1,2-dihydro-2-oxo-4-methyl-7-acetacetic acid amido-quinoline can be used as an intermediate for the production of special pigments.
PATENT CLAIM
Process for the preparation of 1,2-dihydro-2-oxo-4-methyl-7-acetic acid-quinoline, characterized in that 2 moles of diketene are reacted with 1 mole of m-phenylenediamine.
SUBCLAIMS
1. The method according to claim, characterized in that the reaction takes place in 10% of the acetic acid.
2. The method according to claim, characterized in that the reaction is carried out in organic solvents with the addition of about 5 wt .-% catalytically active acetic acid.
3. The method according to claim and dependent claims 1 and 2, characterized in that the reaction takes place preferably at 60-65 "C, but at most under reflux.
** WARNING ** End of DESC field could overlap beginning of CLMS **.
Claims (1)
Priority Applications (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1349373A CH577973A5 (en) | 1973-09-20 | 1973-09-20 | 4-Methyl-7-substd.-2(1H)-quinolones prepn. - by reacting 1,3-phenylenediamine with diketene |
JP10590474A JPS5058080A (en) | 1973-09-20 | 1974-09-12 | |
GB4001374A GB1420530A (en) | 1973-09-20 | 1974-09-13 | Process for preparing quinoline derivatives |
CS633874A CS182266B2 (en) | 1973-09-20 | 1974-09-16 | Method of producing 1,2-dihydro-2-oxo-4-methyl-7-nh-r-quinoline |
DE19742444519 DE2444519C2 (en) | 1973-09-20 | 1974-09-18 | Process for the preparation of 1,2-dihydro-2-oxo-4-methyl-quinoline derivatives |
IT5307374A IT1035085B (en) | 1973-09-20 | 1974-09-18 | PRODUCTION FOR THE PRODUCTION OF QUINYLINE COMPOUNDS |
DD18117974A DD113536A5 (en) | 1973-09-20 | 1974-09-18 | |
FR7431844A FR2244763B1 (en) | 1973-09-20 | 1974-09-20 | |
CA209,659A CA1042894A (en) | 1973-09-20 | 1974-09-20 | Process for the production of 1,2-dihydro-2-oxo-4-methyl-7-amino-quinoline and a related compound |
AT759274A AT337184B (en) | 1973-09-20 | 1974-09-20 | PROCESS FOR THE PREPARATION OF 1,2-DIHYDRO-2-OXO-4-METHYL-7-AMINO-QUINOLINE AND THE NEW 1,2-DIHYDRO-2-OXO-4-METHYL-7-ACETOACETYLAMINO-QUINOLINE |
LU70958A LU70958A1 (en) | 1973-09-20 | 1974-09-20 | |
NL7412463A NL7412463A (en) | 1973-09-20 | 1974-09-20 | PROCESS FOR THE PREPARATION OF 1,2-DIHYDRO-2-OXO-4-METHYL-7-AMINOQUEINOLINE AND 1,2-DIHYDRO-2-OXO-4-METHYL-7-ACETACIC ACID AMIDOQUINOLINE. |
US05/558,355 US4064131A (en) | 1973-09-20 | 1975-03-14 | Process for the production of 1,2-dihydro-2-oxo-4-methyl-7-acetoacetic acid amido-quinoline |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1349373A CH577973A5 (en) | 1973-09-20 | 1973-09-20 | 4-Methyl-7-substd.-2(1H)-quinolones prepn. - by reacting 1,3-phenylenediamine with diketene |
Publications (1)
Publication Number | Publication Date |
---|---|
CH577973A5 true CH577973A5 (en) | 1976-07-30 |
Family
ID=4392922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1349373A CH577973A5 (en) | 1973-09-20 | 1973-09-20 | 4-Methyl-7-substd.-2(1H)-quinolones prepn. - by reacting 1,3-phenylenediamine with diketene |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH577973A5 (en) |
-
1973
- 1973-09-20 CH CH1349373A patent/CH577973A5/en not_active IP Right Cessation
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0065770B1 (en) | Process for the synthesis of p-nitrophenetol | |
US4021442A (en) | Production of 1-alkyl-5-nitroimidazoles | |
CH577973A5 (en) | 4-Methyl-7-substd.-2(1H)-quinolones prepn. - by reacting 1,3-phenylenediamine with diketene | |
DE3840554A1 (en) | METHOD FOR PRODUCING PYRIDINE-2,3-DICARBONIC ACID ESTERS | |
EP0124041B2 (en) | Process for the preparation of derivatives of cyclohexane dione | |
DE69032575T2 (en) | METHOD FOR PRODUCING FERROCENOYL DERIVATIVES | |
CH572471A5 (en) | 4-Methyl-7-substd.-2(1H)-quinolones prepn. - by reacting 1,3-phenylenediamine with diketene | |
DD239591A5 (en) | PROCESS FOR THE PREPARATION OF 2,4-DICHLOR-5-FLUORO BENZOESAEURE | |
DE2264413C2 (en) | ||
DE2444519C2 (en) | Process for the preparation of 1,2-dihydro-2-oxo-4-methyl-quinoline derivatives | |
EP0097615B1 (en) | Preparation of cyanobenzoic-acid esters | |
US2837529A (en) | Substituted thiazolidones and their preparation | |
CH622267A5 (en) | ||
DE826133C (en) | Process for the preparation of dihydroresorcinol carbamic acid esters | |
EP0002477B1 (en) | Process for preparing 1,1-dihalo-4-methyl-1,3-pentadienes | |
DE882550C (en) | Process for the preparation of 1- (p-nitrophenyl) -2-aminopropane-1,3-diol | |
JPS62126164A (en) | 4-alkoxy-2-oxo-pyrrolidine-1 acetic acid alkyl ester and manufacture | |
DE3630553A1 (en) | METHOD FOR PRODUCING 2-CARBOXYDIBENZOYL METHANE | |
DE2124173A1 (en) | 4 Carboxy 2 sulfobenzoesaure anhydnd and process for its Her position | |
AT242128B (en) | Process for the preparation of new benzofuryl (3) ethylamines and their salts | |
AT234105B (en) | Process for the preparation of 4-methyl-6-isobutenyl-pyrone- (2) | |
AT344703B (en) | PROCESS FOR PRODUCING THE NEW 2-AETHOXY-4-AMINO-5-FLUOROPYRIMIDINE | |
US2650235A (en) | New phthalide compounds and their preparation | |
DE3105485C2 (en) | Process for the production of naphtholactone | |
DE2819798A1 (en) | PROCESS FOR PRODUCING 3-PHENYL-PYRIDAZONE- (6) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |