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GB901103A - Process for the production of a therapeutically useful sulphonamide - Google Patents

Process for the production of a therapeutically useful sulphonamide

Info

Publication number
GB901103A
GB901103A GB1847059A GB1847059A GB901103A GB 901103 A GB901103 A GB 901103A GB 1847059 A GB1847059 A GB 1847059A GB 1847059 A GB1847059 A GB 1847059A GB 901103 A GB901103 A GB 901103A
Authority
GB
United Kingdom
Prior art keywords
phenyl
amino
group
hydro
dihydropyrazole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1847059A
Inventor
Raffaello Fusco
Silvano Rossi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
BASF Schweiz AG
Original Assignee
Ciba Geigy AG
Ciba AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ciba Geigy AG, Ciba AG filed Critical Ciba Geigy AG
Priority to GB1847059A priority Critical patent/GB901103A/en
Priority to CH602060A priority patent/CH401979A/en
Publication of GB901103A publication Critical patent/GB901103A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
    • C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
    • C07D231/06—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
    • C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
    • C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D231/14—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three 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
    • C07D231/38—Nitrogen atoms
    • C07D231/42—Benzene-sulfonamido pyrazoles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

The missing text comprises compounds of the formula <FORM:0901103/IV (b)/1> wherein X is a nitro or acylamino group, such as acetylamino, the process for preparing these compounds by condensing 1-phenyl-5-amino- 2,3-dihydropyrazole with a benzenesulphonyl halide X.C6H4.SO2 halogen, in an aqueous medium, at a pH of not less than 11, and also the preparation of 1-phenyl-5-p-aminobenzene sulphonamido-pyrazole by oxidising the above dihydro-pyrazoles with bromine or with hydro gen peroxide in acetic or formic acid in the presence of iodine or an iodide and converting X into an amino group, e.g. by hydrolysis in the case where X is an acylamino group, or by reduction, preferably by catalytic hydro genation, when X is a nitro group. 1 - Phenyl - 5 - amino-2,3-dihydropyrazole is made by treating b -cyanoethyl phenylhydrazine with a mineral acid such as aqueous hydro chloric acid. Specifications 865,708 and 865,709 are referred to.
GB1847059A 1959-05-29 1959-05-29 Process for the production of a therapeutically useful sulphonamide Expired GB901103A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1847059A GB901103A (en) 1959-05-29 1959-05-29 Process for the production of a therapeutically useful sulphonamide
CH602060A CH401979A (en) 1959-05-29 1960-05-24 Process for the preparation of a therapeutically active sulfonamide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1847059A GB901103A (en) 1959-05-29 1959-05-29 Process for the production of a therapeutically useful sulphonamide

Publications (1)

Publication Number Publication Date
GB901103A true GB901103A (en) 1962-07-11

Family

ID=10112978

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1847059A Expired GB901103A (en) 1959-05-29 1959-05-29 Process for the production of a therapeutically useful sulphonamide

Country Status (2)

Country Link
CH (1) CH401979A (en)
GB (1) GB901103A (en)

Also Published As

Publication number Publication date
CH401979A (en) 1965-11-15

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