NO770648L - PROCEDURES FOR THE PREPARATION OF 1-METHYL-2- (ALKYL SULPHONYL) - (PHENOXYMETHYL) -5-NITRO-IMIDAZOLES - Google Patents

PROCEDURES FOR THE PREPARATION OF 1-METHYL-2- (ALKYL SULPHONYL) - (PHENOXYMETHYL) -5-NITRO-IMIDAZOLES

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Publication number
NO770648L
NO770648L NO770648A NO770648A NO770648L NO 770648 L NO770648 L NO 770648L NO 770648 A NO770648 A NO 770648A NO 770648 A NO770648 A NO 770648A NO 770648 L NO770648 L NO 770648L
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Norway
Prior art keywords
methyl
nitro
phenoxymethyl
imidazole
imidazoles
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NO770648A
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Norwegian (no)
Inventor
Erhardt Winkelmann
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Hoechst Ag
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Filing date
Publication date
Priority claimed from DE19762607789 external-priority patent/DE2607789A1/en
Application filed by Hoechst Ag filed Critical Hoechst Ag
Publication of NO770648L publication Critical patent/NO770648L/en

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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D233/00Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
    • C07D233/54Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
    • C07D233/66Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members 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
    • C07D233/91Nitro radicals
    • C07D233/92Nitro radicals attached in position 4 or 5
    • C07D233/94Nitro radicals attached in position 4 or 5 with hydrocarbon radicals, substituted by oxygen or sulfur atoms, attached to other ring members

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Description

Fremgangsmåte til fremstilling av Method for the production of

l-metyl-2-(alkylsulfonyl)-fenoksy-metyl)-5_nitro-imidazoler. 1-methyl-2-(alkylsulfonyl)-phenoxy-methyl)-5-nitro-imidazoles.

Gjenstand for søknad nr. 75 ^2 57 er l-alkyl-2-(fenoksymetyl)-5_nitro-iinidazoler med formel The subject of application no. 75 ^2 57 is 1-alkyl-2-(phenoxymethyl)-5-nitro-inidazoles of formula

1 2 hvori R betyr metyl eller etyl, R betyr trifluormetyl, tri-. klormetyl, nitro, cyan,.metylsulfonyl eller ■ etylsulfonyl og R betyr hydrogen, fluor, klor, brom, jod, trifluormetyl, tri-klormetyl, nitro eller cyan, fremgangsmåte til fremstilling av disse forbindelser, farmasøytiske"midler som inneholder dem og deres anvendelse. Gjenstand for tilleggssøknaden er l-metyl-2-(fenoksymetyl)-5_nitro-imidazoler med formel 1 2 in which R means methyl or ethyl, R means trifluoromethyl, tri-. chloromethyl, nitro, cyan,.methylsulfonyl or ■ ethylsulfonyl and R means hydrogen, fluorine, chlorine, bromine, iodine, trifluoromethyl, trichloromethyl, nitro or cyano, process for the preparation of these compounds, pharmaceuticals containing them and their use The subject matter of the supplementary application is 1-methyl-2-(phenoxymethyl)-5-nitro-imidazoles with the formula

hvori R betyr nitro, cyan, metylsulfonyl eller etylsulfonyl og R betyr metyl eller halogen samt fremgangsmåte til fremstilling av disse forbindelser, farmasøytiske "midler som inneholder dem og deres anvendelse. in which R means nitro, cyano, methylsulphonyl or ethylsulphonyl and R means methyl or halogen as well as processes for the preparation of these compounds, pharmaceutical "agents containing them and their use.

I videreutviklingen av gjenstanden for søknad nr. In the further development of the subject of application no.

75 ^2 57 er det nå funnet en fremgangsmåte til fremstilling av l-alkyl-2-(fenoksymetyl)-5-nitro-imidazoler med formel I 75 ^2 57 a process has now been found for the preparation of 1-alkyl-2-(phenoxymethyl)-5-nitro-imidazoles of formula I

1 2 hvori R betyr metyl, R betyr metylsulfonyl eller etylsulfonyl og R^ betyr hydrogen, metyl eller halogen som fluor, klor, brom eller jod, idet denne fremgangsmåte erkarakterisert vedat 1-■ metyl-2-(fenoksymetyl)-5-nitro-imidazoler med formel II 1 2 in which R means methyl, R means methylsulfonyl or ethylsulfonyl and R^ means hydrogen, methyl or halogen such as fluorine, chlorine, bromine or iodine, this method being characterized by 1-■ methyl-2-(phenoxymethyl)-5-nitro- imidazoles of formula II

hvori A betyr et svovelatoirr eller en sulfoksydgruppe (-S0-), where A means a sulfur atom or a sulfoxide group (-S0-),

R betyr metyl eller etyl, R"<*>"betyr metyl og R^ betyr hydrogen, metyl eller halogen,som fluor, klor, brom eller jod, oksyderes. R means methyl or ethyl, R"<*>" means methyl and R^ means hydrogen, methyl or halogen, such as fluorine, chlorine, bromine or iodine, is oxidized.

De som utgangsstoffer anvendte 1-mety1-2-(fenoksy-metyl )-5-nitro-imidazoler med formel II er gjenstand for søknad nr. 76 24 23. De kan fåes av l-metyl-2-klormetyl-5-nitro-imidazol (oppnåelig ifølge DOS 1.595-929 og DOS 1.470.'102) og eventuelt substituert alkylmerkaptofenoler eller alkylsulfinyl-fenoler (oppnåelig av de tilsvarende merkaptofenoler og dialkyl-sulfat og eventuelt deretter oksydasjon med perbenzosyre) i dimetylformamid og i nærvær av kaliumkarbonat.• The 1-methyl-2-(phenoxy-methyl)-5-nitro-imidazoles of formula II used as starting substances are the subject of application no. 76 24 23. They can be obtained from 1-methyl-2-chloromethyl-5-nitro- imidazole (obtainable according to DOS 1.595-929 and DOS 1.470.'102) and optionally substituted alkyl mercaptophenols or alkylsulfinyl phenols (obtainable from the corresponding mercaptophenols and dialkyl sulfate and optionally subsequent oxidation with perbenzoic acid) in dimethylformamide and in the presence of potassium carbonate.•

Som utgangsstoTfer med formel II kommer det eksempelvis på tale: 1-mety1-2-(4-metyltio-fenoksymetyl)-5-nitro-imidazol 1-mety1-2-(4-etyltio-fenoksymetyl)-5-nitro-imidazol 1-mety1-2-(3-metyl-4-metyltio-fenoksymetyl)-5-nitro-imidazol 1-mety1-2-(3~mety1-4-etyltio-fenoksymetyl)-5-nitro-imidazol l-metyl-2-(3~fluor-, -klor-, -brom-, -jod-4-metyltio-fenoksy-metyl )-5-nitro-imidazol Examples of starting materials with formula II include: 1-methyl-2-(4-methylthio-phenoxymethyl)-5-nitro-imidazole 1-methyl-2-(4-ethylthio-phenoxymethyl)-5-nitro-imidazole 1 -methyl-2-(3-methyl-4-methylthio-phenoxymethyl)-5-nitro-imidazole 1-methyl-2-(3-methyl-4-ethylthio-phenoxymethyl)-5-nitro-imidazole 1-methyl-2 -(3~fluoro-, -chloro-, -bromo-, -iodo-4-methylthio-phenoxy-methyl )-5-nitro-imidazole

l-metyl-2-(3~fluor-, -klor-, -brom-, -jod-4-etyltio-fenoksy-metyl ) -5-nitro-imidazol 1-methyl-2-(3-fluoro-, -chloro-, -bromo-, -iodo-4-ethylthio-phenoxy-methyl )-5-nitro-imidazole

l-metyl-2-(4-metylsulfinyl-fenoksymetyl)-5-nitro-imidazol l-metyl-2-(4-etylsulfinyl-fenoksymetyl)-5-nitro-imidazol l-metyl-2-(3-mety1-4-metylsulfinyl-fenoksymetyl)-5-nitroimidazol l-methyl-2-(4-methylsulfinyl-phenoxymethyl)-5-nitro-imidazole l-methyl-2-(4-ethylsulfinyl-phenoxymethyl)-5-nitro-imidazole l-methyl-2-(3-methyl-4 -methylsulfinyl-phenoxymethyl)-5-nitroimidazole

l-metyl-2- (3-mety1-4-etylsulf inyl-f enoksymetyl) - 5-nitro-imidazol l-metyl-2-(3~fluor-, -klor-, -brom-, -jod-4-metylsulfinyl-fenoksymetyl)-5-nitro-imidazol 1-methyl-2-(3-methyl-4-ethylsulfinyl-phenoxymethyl)-5-nitro-imidazole 1-methyl-2-(3-fluoro-, -chloro-, -bromo-, -iodo-4- methylsulfinyl-phenoxymethyl)-5-nitro-imidazole

l-metyl-2-(3-fluor-, -klor-, -brom-, -jod-4-etyIsulfinyl-fenoksymetyl)-5-nitro-imidazol. 1-methyl-2-(3-fluoro-, -chloro-, -bromo-, -iodo-4-ethylsulfinyl-phenoxymethyl)-5-nitro-imidazole.

Til oksydasjonen anvendes hensiktsmessig en- eller to ganger molare mengder av et oksydasjonsmiddel. Ofte kan det fortrinnsvis anvendes et overskudd av oksydasjonsmidlet. Anvender man som utgangsstoffer de tilsvarende sulfider (A = -S- One or two times molar quantities of an oxidizing agent are suitably used for the oxidation. Often, an excess of the oxidizing agent can preferably be used. The corresponding sulfides are used as starting materials (A = -S-

i formel II), så krever man minst to molekvivalenter oksydasjonsmiddel. Anvender man som utgangsstoff de tilsvarende sulfoksyder (A = -SO--i formel II), så trenger man en molekvi-valent oksydasjonsmiddel. in formula II), then at least two molar equivalents of oxidizing agent are required. If the corresponding sulfoxides (A = -SO-- in formula II) are used as starting materials, then a molecularly equivalent oxidizing agent is needed.

Som oksydasjonsmiddel kommer det eksempelvis påAs an oxidizing agent, it comes on, for example

tale hydrogenperoksyd eller persyrer, som f.eks. pereddiksyre, pertrifluoreddiksyre, klorperbenzosyre, spesielt 3-klorperbenzosyre, salpetersyre, kromsyre og deres salter, kromsyreanhydrid, permanganater, hypokloriter, klorater, perklorater, perjodater og nitrogenoksyder, spesielt dinitrogentetroksyd. say hydrogen peroxide or peracids, such as peracetic acid, pertrifluoroacetic acid, chloroperbenzoic acid, especially 3-chloroperbenzoic acid, nitric acid, chromic acid and their salts, chromic anhydride, permanganates, hypochlorites, chlorates, perchlorates, periodates and nitrogen oxides, especially dinitrogen tetroxide.

Oksydasjonsreaksjonene gjennomføres - fortrinnsvis iThe oxidation reactions are carried out - preferably in

et oppløsnings- eller fordelingsmiddel.a dissolving or dispersing agent.

Herved egner det seg spesielt slike .oppløsningsmidler som ikke angripes" av oksydasjonsmidlet, som f,eks. eddiksyre, trifluoreddiksyre. Ved anvendelse av perbenzosyre egner det seg også metylenklorid og kloroform som oppløsningsmiddel. Solvents which are not attacked by the oxidizing agent, such as, for example, acetic acid, trifluoroacetic acid, are particularly suitable. When using perbenzoic acid, methylene chloride and chloroform are also suitable as solvents.

OksydasJ onsreaksj onene gj ennomf øre.s vanligvis ved temperaturer mellom 0r-og 100°C, spesielt ved 40-60°C. Reaksjons-tidene utgjør.alt etter reaksjonsbetingelsene få minutter til noen timer. The oxidation reactions usually take place at temperatures between 0 and 100°C, especially at 40-60°C. Depending on the reaction conditions, the reaction times range from a few minutes to a few hours.

Isoleringen av fremgangsmåteproduktene foregår ved fortynning av reaksjonsoppløsningen med vann under samtidig utfelling eller ved inndampning av det organiske oppløsningsmiddel i vakuum.. Eventuelt kan det foregå en rensning ved omkrystalli-sering fra et egnet oppløsningsmiddel eller oppløsningsmiddel-blanding. The process products are isolated by diluting the reaction solution with water during simultaneous precipitation or by evaporating the organic solvent in a vacuum. Optionally, purification may take place by recrystallization from a suitable solvent or solvent mixture.

Eksempel 1. 1- me t y 1- 2 - ( 4 - me t y 1 su 1 f ony 1- f enoks yrne tyl) -' 5- ni ' tr o- imi' d' a' z" o' l, Example 1. 1- me t y 1- 2 - ( 4 - me t y 1 su 1 f ony 1- f enox yrne tyl) -' 5- ni ' tr o- imi' d' a' z" o' l,

27,9 g (0,1 mol) l-metyl-2-(4-metyltio-fenoksy-metyl)-5-nitro-imidazol (smeltepunkt ll6°C) oppløses i 250 ml iseddik og under omrøring tildryppes ved værelsestemperatur 27.9 g (0.1 mol) 1-methyl-2-(4-methylthio-phenoxy-methyl)-5-nitro-imidazole (melting point 116°C) are dissolved in 250 ml of glacial acetic acid and added dropwise at room temperature while stirring

24,3 g (0,25 mol) 35%-ig hydrogenperoksyd. Ved den eksoterme reaksjon foregår temperaturøkning "til ca. 45°C. Derved opp-varmes ennu 1 time ved 60°C under omrøring. Etter avkjøling til værelsestemperatur helles blandingen på 800 ml is/vann-blanding, utfellingen frasuges, vaskes med vann og omkrystalli-. seres fra isopropanol under aktivkulltilsetning. Man får så-ledes 29 g = 93% av det teoretiske l-metyl-2-(4-metyl-sulfonyl-fenoksymetyl)-5-nitro-imidazol i form av gulaktige krystaller med et smeltepunkt 157°C. 24.3 g (0.25 mol) 35% hydrogen peroxide. During the exothermic reaction, the temperature rises to approx. 45°C. The mixture is then heated for another 1 hour at 60°C with stirring. After cooling to room temperature, the mixture is poured into 800 ml of an ice/water mixture, the precipitate is suctioned off, washed with water and is recrystallized from isopropanol with the addition of activated carbon. This gives 29 g = 93% of the theoretical 1-methyl-2-(4-methyl-sulfonyl-phenoxymethyl)-5-nitro-imidazole in the form of yellowish crystals with a melting point 157°C.

Istedenfor utgangsstoffet l-metyl-2-(4-metyltio-fenoksymetyl)-5-nitro-imidazdl kan det også anvendes det tilsvarende sulfoksyd, l-metyl-2-(4-metylsulfinyl-fenoksymetyl)-5-nitro-imidazol (smeltepunkt 130°C). Det er da nødvendig med anvendelse av halve mengden hydrogenperoksyd.. Instead of the starting material 1-methyl-2-(4-methylthio-phenoxymethyl)-5-nitro-imidazdl, the corresponding sulfoxide, 1-methyl-2-(4-methylsulfinyl-phenoxymethyl)-5-nitro-imidazole can also be used (melting point 130°C). It is then necessary to use half the amount of hydrogen peroxide.

På samme måte kan det fremstilles: 1- metyl-2-(4-etylsulfonyl-fenoksymetyl)-5-nitro-imidazol, smeltepunkt 132°C ved oksydasj>on av l-metyl-2-(4-etyltio-fenoksy-metyl)-5-nitro-imidazol (smeltepunkt.90°C) eller l-metyl-2-(4-etylsulfinyl-fenoksymetyl)-5-nitro-imidazol (smeltepunkt 103°C). In the same way, it can be prepared: 1-methyl-2-(4-ethylsulfonyl-phenoxymethyl)-5-nitro-imidazole, melting point 132°C by oxidation of 1-methyl-2-(4-ethylthio-phenoxy-methyl) )-5-nitro-imidazole (melting point 90°C) or 1-methyl-2-(4-ethylsulfinyl-phenoxymethyl)-5-nitro-imidazole (melting point 103°C).

l-metyl-2- (3-me ty 1-4-metylsulf onyl-f enoksymetyl)-5-nitro-imidazol, smeltepunkt l4l°C ved oksydasjon av 1-metyl-2- (3-metyl-4-metyltio-fenoksymetyl)-5-nitro-imidazol (smeltepunkt 108°C) eller l-metyl-2-(3-metyl-4-metylsulfinyl-fenoksy-, metyl)-5-nitroimidazol (smeltepunkt 121°C). 1-methyl-2-(3-methyl 1-4-methylsulfonyl-phenoxymethyl)-5-nitro-imidazole, melting point 141°C by oxidation of 1-methyl-2-(3-methyl-4-methylthio- phenoxymethyl)-5-nitroimidazole (melting point 108°C) or 1-methyl-2-(3-methyl-4-methylsulfinyl-phenoxy-, methyl)-5-nitroimidazole (melting point 121°C).

l-metyl-2-(3-metyl-4-etylsulfonyl-fenoksymetyl)-5-nitroimidazol, smeltepunkt 115°C ved oksydasjon av l-metyl-2-(3-metyl-4-etyltio-fenoksymetyl)-5-nitro-imidazol (smeltepunkt 80°C) eller-l-metyl-2-(3-metyl-4-etylsulfinyl-fenoksymetyl)-5-nitroimidazol (smeltepunkt 95°C). 1-methyl-2-(3-methyl-4-ethylsulfonyl-phenoxymethyl)-5-nitroimidazole, melting point 115°C by oxidation of 1-methyl-2-(3-methyl-4-ethylthio-phenoxymethyl)-5-nitro -imidazole (melting point 80°C) or -1-methyl-2-(3-methyl-4-ethylsulfinyl-phenoxymethyl)-5-nitroimidazole (melting point 95°C).

l-metyl-2-(3-klor-4-metylsulfonyl-fenoksymetyl)-5-nitroimidazpl ved oksydasjon av l-metyl-2-(3-klor-4-metyl-tiofenoksymetyl)-5-nitro-imidazol eller l-metyl-2-(3-klor-4-metylsulfinyl-fenoksymetyl)-5-nitro-imidazol. l-methyl-2-(3-chloro-4-methylsulfonyl-phenoxymethyl)-5-nitroimidazpl by oxidation of l-methyl-2-(3-chloro-4-methyl-thiophenoxymethyl)-5-nitroimidazole or l- methyl-2-(3-chloro-4-methylsulfinyl-phenoxymethyl)-5-nitro-imidazole.

l-metyl-2-(3-klor-4-etylsulfonyl-fenoksymetyl)-5-nitroimidazol ved oksydasjon av l-metyl-2-(3-klor-4-etyltio-fenoksymetyl)-nitro-imidazol eller l-metyl-2-(3-klor-4-etyl-sulfinyl-fenoksy-metyl)-5-nitro-imidazol.. l-methyl-2-(3-chloro-4-ethylsulfonyl-phenoxymethyl)-5-nitroimidazole by oxidation of l-methyl-2-(3-chloro-4-ethylthio-phenoxymethyl)-nitro-imidazole or l-methyl- 2-(3-chloro-4-ethyl-sulfinyl-phenoxy-methyl)-5-nitro-imidazole..

Claims (1)

Fremgangsmåte til fremstilling av l-alkyl-2-(fen- oksymetyl)-5-nitro-imidazoler med formel I Process for the preparation of 1-alkyl-2-(phen- oxymethyl)-5-nitroimidazoles of formula I hvori R betyr metyl og R betyr metylsulfonyl eller etylsulfonyl ogR ^ betyr hydrogen, metyl eller halogen, karakterisert ved at man oksyderer l-metyl-2-(fenoksy-metyl )-5-nitroimidazoler med formel II in which R means methyl and R means methylsulfonyl or ethylsulfonyl and R ^ means hydrogen, methyl or halogen, characterized by oxidizing 1-methyl-2-(phenoxymethyl)-5-nitroimidazoles of formula II hvori A betyr'et svovelatom eller en sulfoksydgruppe (-S0-), R betyr metyl eller etyl, R betyr metyl og R-^ betyr hydrogen, metyl eller halogen.where A means a sulfur atom or a sulfoxide group (-S0-), R means methyl or ethyl, R means methyl and R-^ means hydrogen, methyl or halogen.
NO770648A 1976-02-26 1977-02-25 PROCEDURES FOR THE PREPARATION OF 1-METHYL-2- (ALKYL SULPHONYL) - (PHENOXYMETHYL) -5-NITRO-IMIDAZOLES NO770648L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762607789 DE2607789A1 (en) 1974-12-16 1976-02-26 PROCESS FOR THE PREPARATION OF 1-METHYL-2-(ALKYLSULFONYL)-PHENOXY-METHYL)-5-NITRO-IMIDAZOLE

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NO770648L true NO770648L (en) 1977-08-29

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AT (1) AT361468B (en)
CA (1) CA1079738A (en)
CH (1) CH624942A5 (en)
DK (1) DK144524C (en)
EG (1) EG13828A (en)
ES (1) ES456117A2 (en)
FI (1) FI770599A (en)
IT (1) IT1115608B (en)
LU (1) LU76834A1 (en)
NL (1) NL7701838A (en)
NO (1) NO770648L (en)
SE (1) SE7702126L (en)

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SE7702126L (en) 1977-08-27
AT361468B (en) 1981-03-10
DK144524C (en) 1982-09-06
ATA128477A (en) 1980-08-15
CH624942A5 (en) 1981-08-31
EG13828A (en) 1982-09-30
NL7701838A (en) 1977-08-30
DK144524B (en) 1982-03-22
LU76834A1 (en) 1977-09-26
FI770599A (en) 1977-08-27
ES456117A2 (en) 1978-03-01
CA1079738A (en) 1980-06-17
DK84177A (en) 1977-08-27
IT1115608B (en) 1986-02-03

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