NO141851B - PROCEDURE FOR THE PREPARATION OF METHYL-3- (2-KINOXALINYLMETHYL) -CARBAZATE-N1.N4-DIOXYD - Google Patents

PROCEDURE FOR THE PREPARATION OF METHYL-3- (2-KINOXALINYLMETHYL) -CARBAZATE-N1.N4-DIOXYD Download PDF

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Publication number
NO141851B
NO141851B NO741133A NO741133A NO141851B NO 141851 B NO141851 B NO 141851B NO 741133 A NO741133 A NO 741133A NO 741133 A NO741133 A NO 741133A NO 141851 B NO141851 B NO 141851B
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Prior art keywords
acid
methyl
carbazate
dioxide
kinoxalinylmethyl
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NO741133A
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Norwegian (no)
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NO741133L (en
NO141851C (en
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Herman Faubl
Banavara Lakshmana Mylari
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Pfizer
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Publication of NO741133L publication Critical patent/NO741133L/en
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Publication of NO141851C publication Critical patent/NO141851C/en

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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D241/00Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings
    • C07D241/36Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings condensed with carbocyclic rings or ring systems
    • C07D241/50Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings condensed with carbocyclic rings or ring systems with hetero atoms directly attached to ring nitrogen atoms
    • C07D241/52Oxygen atoms

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Fodder In General (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Catalysts (AREA)

Description

Foreliggende oppfinnelse vedrører en ny fremgangsmåte The present invention relates to a new method

for fremstilling av mety1-3-(2-kinoksalinylmetylen)-karbazat-N 1 ,N 4-dioksyd. Forbindelsen fremstilt efter den nye fremgangsmåten er kjent som et urinveisantiseptikum, systemisk anti-infektiøst, vekstfremmende middel for dyr, som et middel for kontroll av kroniske åndedrettssykdommer i fjærkre og forbedring av for-utnyttelsen for dyr. [Australian Vet. J. 48, nr. 10 579 (1972) for the production of methyl 1-3-(2-quinoxalinylmethylene)-carbazate-N 1 ,N 4 -dioxide. The compound prepared according to the new method is known as a urinary antiseptic, systemic anti-infective, growth promoter for animals, as a means for controlling chronic respiratory diseases in poultry and improving the pre-utilization of animals. [Australian Vet. J. 48, No. 10,579 (1972)

og Ree. Med. Vet. ecole Alfort 148 nr. 3 365-73 (1972)]. and Ree. With. Know. ecole Alfort 148 no. 3 365-73 (1972)].

Ifølge foreliggende oppfinnelse tilveiebringes en fremgangsmåte for fremstilling av metyl-3-(2-kinoksalinylmetylen)-karbazat-N 1 ,N 4-dioksyd med formelen: According to the present invention, a method is provided for the production of methyl 3-(2-quinoxalinylmethylene)-carbazate-N 1 , N 4 -dioxide with the formula:

Fremgangsmåten karakteriseres ved at N-lavere-alkyl-2-(2-kinoksalinkarboksaldehyd-N 1 ,N 4-dioksyd)nitron med formelen hvor R er lavere alkyl, fortrinnsvis metyl, omsettes med minst en ekvimolar mengde av metylkarbazat i et reaksjonsinert oppløsningsmiddel i nærvær av en sterk syrekatalysator, valgt fra saltsyre, bromhydrogensyre, svovelsyre, fosforsyre, p-toluensulfonsyre og trifluoreddiksyre, ved en temperatur på The method is characterized in that N-lower-alkyl-2-(2-quinoxalinecarboxaldehyde-N 1 ,N 4-dioxide) nitrone with the formula where R is lower alkyl, preferably methyl, is reacted with at least an equimolar amount of methylcarbazate in a reaction-initiated solvent in presence of a strong acid catalyst selected from hydrochloric acid, hydrobromic acid, sulfuric acid, phosphoric acid, p-toluenesulfonic acid and trifluoroacetic acid, at a temperature of

ca. 30 til 200°C. about. 30 to 200°C.

Den nye fremgangsmåten ifølge foreliggende oppfinnelse utføres i et reaksjonsinert løsningsmiddel. Et inert løsnings-middel for dette formål er ethvert løsningsmiddel som tillater oppløsning av reaksjonsmidlene og som ikke har noen uheldig innvirkning på reaksjonsmidlene og produktene under de anvendte betingelser. To foretrukne typer omfatter organiske syrer, The new method according to the present invention is carried out in a reaction-inert solvent. An inert solvent for this purpose is any solvent which allows dissolution of the reactants and which has no adverse effect on the reactants and products under the conditions used. Two preferred types include organic acids,

slik som eddiksyre, og lavere alkoholer og estere slik som etanol og etylacetat. Den nye fremgangsmåten ifølge foreliggende oppfinnelse krever tilstedeværelse av en sterk syrekatalysator valgt fra saltsyre, bromhydrogensyre, svovelsyre, fosforsyre, p-toluensulfonsyre og trifluoreddiksyre. Det er vanligvis tilfreds-stillende å anvende fra ca. 2-10 vekt%, beregnet på den totale reaksjonsblandingen av syrekatalysatoren. (Dersom det anvendes en sterk syre, f.eks. trifluoreddiksyre som løsningsmiddel, such as acetic acid, and lower alcohols and esters such as ethanol and ethyl acetate. The new method according to the present invention requires the presence of a strong acid catalyst selected from hydrochloric acid, hydrobromic acid, sulfuric acid, phosphoric acid, p-toluenesulfonic acid and trifluoroacetic acid. It is usually satisfactory to use from approx. 2-10% by weight, calculated on the total reaction mixture of the acid catalyst. (If a strong acid is used, e.g. trifluoroacetic acid as solvent,

er det unødvendig med en syrekatalysator). Ofte er det ønskelig med tilstedeværelse av en liten mengde vann i reaksjonsblandingen, og denne kan passende tilsettes ved å anvende som en syrekatalysator slike syrer som konsentrert saltsyre eller bromhydrogensyre som inneholder vann. Imidlertid kan anvendes et hvilket som helst løsningsmiddel som har de ovenfor angitte egenskaper. Reaksjonstemperaturen kan variere fra 30°C til ca. 200°C, og som regel vil den optimale temperatur variere med valget av reagenser. Høyere temperatur kan kreve anvendelse av en autoklav eller høytrykkskar. an acid catalyst is unnecessary). It is often desirable to have a small amount of water present in the reaction mixture, and this can suitably be added by using as an acid catalyst such acids as concentrated hydrochloric acid or hydrobromic acid which contain water. However, any solvent which has the above-mentioned properties can be used. The reaction temperature can vary from 30°C to approx. 200°C, and as a rule the optimum temperature will vary with the choice of reagents. Higher temperatures may require the use of an autoclave or high-pressure vessel.

Avhengig av de anvendte reaksjonsmidler og temperatur Depending on the reagents used and temperature

kan reaksjonstiden variere fra noen få minutter til så meget som 24 timer. For å være sikker på at reaksjonen er avsluttet er det foretrukket å anvende relativt lang tid. Optimale reaksjons-betingelser bestemmes lett eksperimentelt. the reaction time can vary from a few minutes to as much as 24 hours. To be sure that the reaction has ended, it is preferred to use a relatively long time. Optimal reaction conditions are easily determined experimentally.

Forholdet mellom kinoksalinderivatet og metylkarbazatet kan variere meget, men for effektiv overføring er det nødvendig med minst én ekvivalent av. metylkarbazat pr. mol av kinoksalinderivatet og det er foretrukket med et molart overskudd på The ratio between the quinoxaline derivative and the methyl carbazate can vary widely, but for effective transfer at least one equivalent of is required. methylcarbazate per mol of the quinoxaline derivative and it is preferred with a molar excess of

50-100% av metylkarbazatet. 50-100% of the methylcarbazate.

Utgangsmaterialene fremstilles lett efter kjente The starting materials are easily produced according to known methods

metoder innenfor den organiske kjemi. methods within organic chemistry.

Nitronet fremstilles via den vei som er beskrevet Nitronet is produced via the route described

av H.K. Kim. U.S.-patent 3.644.363. Metylkarbazatet er tilgjengelig via den sekvensen som er beskrevet av N. Rabjohn og H.D. Barnstorff, J. Am. Chem. Soc, 75, 2259 (1953). by H.K. Kim. U.S. Patent 3,644,363. The methylcarbazate is available via the sequence described by N. Rabjohn and H.D. Barnstorff, J. Am. Chem. Soc, 75, 2259 (1953).

Produktet isoleres ved fortynning av reaksjonsblandingen med vann, avkjøling og derefter filtrering. Det faste stoffet oppsamles, vaskes med vann og tørkes, og man får det ønskede mety1-3-(2-kinoksalinylmetylen)karbazat-N 1 ,N 4-dioksyd. The product is isolated by diluting the reaction mixture with water, cooling and then filtering. The solid is collected, washed with water and dried, and the desired methyl 1-3-(2-quinoxalinylmethylene)carbazate-N 1 ,N 4 -dioxide is obtained.

Det verdifulle produkt som fremstilles ifølge foreliggende oppfinnelse, har urinveis, systemisk anti-infektiøs virkning på dyr, innbefattet mennesker, mot en rekke mikro-organismer som omfatter Gram-positive og Gram-negative bakterier. Det er spesielt verdifullt mot Gram-negative infeksjoner både The valuable product produced according to the present invention has a urinary, systemic anti-infective effect on animals, including humans, against a number of micro-organisms which include Gram-positive and Gram-negative bacteria. It is particularly valuable against Gram-negative infections as well

in vitro og in vivo. in vitro and in vivo.

Tilsetningen av en liten mengde av den beskrevne Schiffske base til dyrefåret, både til drøvtyggere og ikke-drøvtyggere, slik at disse dyrene får produktet i løpet av en forlenget tidsperiode i en mengde fra ca. 0,04 mg/kg til ca. 10 mg/kg legemsvekt pr. dag, spesielt i størstedelen av deres aktive vekstperiode, resulterer dessuten i en akselerasjon av veksthastigheten og forbedret fårutnyttelse. Disse to klassene av dyr omfatter fjærkre (kylling, ender, kalkuner), kyr, hunder, sauer, katter, rotter, svin, mus, hester, geiter, muldyr, The addition of a small amount of the described Schiffske base to the animal feed, both to ruminants and non-ruminants, so that these animals receive the product during an extended period of time in an amount from approx. 0.04 mg/kg to approx. 10 mg/kg body weight per day, especially during the majority of their active growth period, also results in an acceleration of growth rate and improved sheep utilization. These two classes of animals include poultry (chicken, ducks, turkeys), cows, dogs, sheep, cats, rats, pigs, mice, horses, goats, mules,

kaniner, mink etc. Den gunstige virkningen på veksthastighet og forutnyttelse ligger over den som man vannligvis oppnår ved fullverdig nærende for som inneholder alle næringsstoffer, vitaminer, mineraler og andre kjente faktorer som er nødvendig for maksimal og sunn vekst av slike dyr. Dyrene oppnår således markedsstørrelsen hurtigere og ved hjelp av mindre for. rabbits, mink, etc. The beneficial effect on growth rate and utilization is above that which is normally achieved with complete nutrition for which contains all nutrients, vitamins, minerals and other known factors that are necessary for maximum and healthy growth of such animals. The animals thus reach the market size faster and with the help of less feed.

Disse forblandinger har vist seg å være spesielt verdifulle og spesielt gode for slike dyr som fjærkre, rotter, hunder, svin, lam, kyr o.l. I noen tilfeller kan responsgraden variere med hensyn til kjønn av dyrene. Produktene kan selv-følgelig administreres i en del av foret eller de kan blandes jevnt gjennom et blandet for, alternativt kan de som nevnt ovenfor administreres som en ekvivalent mengde via drikkevannet til dyret. Det bør bemerkes at det kan anvendes en rekke for-komponenter i de næringsmessig avbalanserte forblandinger. These premixes have proven to be particularly valuable and especially good for such animals as poultry, rats, dogs, pigs, lambs, cows, etc. In some cases, the degree of response may vary with regard to the sex of the animals. The products can therefore be administered in part of the feed or they can be mixed evenly through a mixed feed, alternatively, as mentioned above, they can be administered as an equivalent amount via the animal's drinking water. It should be noted that a number of pre-components can be used in the nutritionally balanced pre-mixes.

De følgende eksempler illustrerer oppfinnelsen. The following examples illustrate the invention.

Eksempel I Example I

En løsning av 43,8 g (0,20 mol) N-metyl-2-(2-kinoksalinyl-N 1 ,N 4-dioksyd)-nitron og metylkarbazat (27 g, A solution of 43.8 g (0.20 mol) of N-methyl-2-(2-quinoxalinyl-N 1 ,N 4 -dioxide)-nitron and methylcarbazate (27 g,

0,30 mol) i eddiksyre (400 ml) tilsettes konsentrert svovelsyre (20 ml). Den resulterende blanding, oppvarmes ved ca. 90-100°C 0.30 mol) in acetic acid (400 ml) is added concentrated sulfuric acid (20 ml). The resulting mixture is heated at approx. 90-100°C

i ca. 20-24 timer. Efter avkjøling og fortynning med vann (1200 ml) oppsamles det utfelte faste stoff, tørres, og man får metyl-3-(2-kinoksalinyl-metylen)-karbazat-N 1 ,N 4-dioksyd. for about. 20-24 hours. After cooling and diluting with water (1200 ml), the precipitated solid is collected, dried, and methyl 3-(2-quinoxalinyl-methylene)-carbazate-N 1 ,N 4 -dioxide is obtained.

Eksempel II Example II

Til eddiksyre (20 ml) settes N-metyl-2-(2-kinoksalinyl-N 1 ,N 4-dioksyd)-nitron (2,19 g, 0,01 mol), metylkarbazat (1,35 g, 0,015 mol) og konsentrert svovelsyre (1 ml). Blandingen oppvarmes ved 90-100°C i 20 timer og avkjøles derefter og for- To acetic acid (20 ml) is added N-methyl-2-(2-quinoxalinyl-N 1 ,N 4-dioxide)-nitrone (2.19 g, 0.01 mol), methyl carbazate (1.35 g, 0.015 mol) and concentrated sulfuric acid (1 mL). The mixture is heated at 90-100°C for 20 hours and then cooled and pre-

tynnes med 60 ml vann og filtreres for å gi metyl-3-(2-kinoksalinyl-metylen)-karbazat-N 1 ,N 4-dioksyd (2,2 g, 84%) som et lysegult, fast stoff med smeltepunkt 248-250°C (spaltning). Massespektrogram, NMR og IR i overensstemmelse med antatt struktur. diluted with 60 mL of water and filtered to give methyl 3-(2-quinoxalinyl-methylene)-carbazate-N 1 ,N 4 -dioxide (2.2 g, 84%) as a pale yellow solid, mp 248- 250°C (decomposition). Mass spectrogram, NMR and IR in accordance with assumed structure.

Claims (1)

Fremgangsmåte for fremstilling av mety1-3-(2-kinoksalinylmetylen)-karbazat-N 1 ,N 4-dioksyd med formelen:Method for the production of methyl 1-3-(2-quinoxalinylmethylene)-carbazate-N 1 ,N 4-dioxide with the formula: karakterisert ved at N-lavere-alkyl-2-(2-kinoksalinkarboksaldehyd-N 1 ,N 4-dioksyd)nitron med formelencharacterized in that N-lower-alkyl-2-(2-quinoxalinecarboxaldehyde-N 1 ,N 4-dioxide) nitrone with the formula hvor R er lavere alkyl, fortrinnsvis metyl, omsettes med minst en ekvimolar mengde av metylkarbazat i et reaksjonsinert oppløsningsmiddel i nærvær av en sterk syrekatalysator, valgt fra saltsyre, bromhydrogensyre, svovelsyre, fosforsyre, p-toluensulfonsyre og trifluoreddiksyre, ved en temperatur på ca. 30 til 200°C.where R is lower alkyl, preferably methyl, is reacted with at least an equimolar amount of methylcarbazate in a reaction-inert solvent in the presence of a strong acid catalyst, chosen from hydrochloric acid, hydrobromic acid, sulfuric acid, phosphoric acid, p-toluenesulfonic acid and trifluoroacetic acid, at a temperature of approx. 30 to 200°C.
NO741133A 1973-04-10 1974-03-29 PROCEDURE FOR THE PREPARATION OF METHYL-3- (2-KINOXALINYLMETHYL) -CARBAZATE-N1.N4-DIOXYD. NO141851C (en)

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JP (1) JPS5333596B2 (en)
AR (1) AR210723A1 (en)
AU (1) AU477279B2 (en)
CA (1) CA1018977A (en)
CH (1) CH603599A5 (en)
CS (1) CS212276B2 (en)
DD (1) DD110875A5 (en)
DK (1) DK140756B (en)
ES (1) ES424803A1 (en)
FI (1) FI59405C (en)
FR (1) FR2225429B1 (en)
GB (1) GB1462424A (en)
HK (1) HK48877A (en)
HU (1) HU170050B (en)
IE (1) IE39110B1 (en)
IL (1) IL44434A (en)
IT (1) IT1056058B (en)
MY (1) MY7800014A (en)
NL (1) NL7404044A (en)
NO (1) NO141851C (en)
PH (1) PH11135A (en)
PL (1) PL94963B1 (en)
RO (1) RO71311A (en)
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SU (1) SU730302A3 (en)
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JPS5135625Y2 (en) * 1971-03-30 1976-09-02
JPS4984830U (en) * 1972-11-09 1974-07-23
JPS49100338U (en) * 1972-12-20 1974-08-29
IT1078991B (en) * 1977-05-26 1985-05-08 Erregierre Ind Chim Spa PROCESS FOR THE PREPARATION OF THE HYDRAZONE CARBOMETHOXY, OF THE 2-FORMYLKINOXALINE-1,4-DI-N-OXIDE
JPS5487994U (en) * 1977-12-02 1979-06-21
DK141708B (en) * 1978-04-20 1980-05-27 Rasmussen Holding As V Kann Window maneuvering and locking grips.

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HK48877A (en) 1977-09-30
AR210723A1 (en) 1977-09-15
GB1462424A (en) 1977-01-26
DD110875A5 (en) 1975-01-12
IL44434A (en) 1977-08-31
YU83474A (en) 1982-08-31
NO741133L (en) 1974-10-11
YU39151B (en) 1984-06-30
FR2225429B1 (en) 1977-06-24
DK140756C (en) 1980-04-14
CH603599A5 (en) 1978-08-31
DK140756B (en) 1979-11-12
JPS5333596B2 (en) 1978-09-14
AU477279B2 (en) 1976-10-21
SE407219B (en) 1979-03-19
IE39110L (en) 1974-10-10
JPS5030893A (en) 1975-03-27
CS212276B2 (en) 1982-03-26
IE39110B1 (en) 1978-08-02
AU6682874A (en) 1975-09-25
SU730302A3 (en) 1980-04-25
PL94963B1 (en) 1977-09-30
NL7404044A (en) 1974-10-14
ES424803A1 (en) 1976-05-16
IL44434A0 (en) 1974-06-30
FI59405C (en) 1981-08-10
NO141851C (en) 1980-06-04
MY7800014A (en) 1978-12-31
RO71311A (en) 1981-08-30
ZA742052B (en) 1975-03-26
HU170050B (en) 1977-03-28
PH11135A (en) 1977-10-27
FR2225429A1 (en) 1974-11-08
IT1056058B (en) 1982-01-30
FI59405B (en) 1981-04-30
CA1018977A (en) 1977-10-11

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