GB513242A - Process for the manufacture of pure 4-amino-benzene-sulphonamide - Google Patents

Process for the manufacture of pure 4-amino-benzene-sulphonamide

Info

Publication number
GB513242A
GB513242A GB10324/38A GB1032438A GB513242A GB 513242 A GB513242 A GB 513242A GB 10324/38 A GB10324/38 A GB 10324/38A GB 1032438 A GB1032438 A GB 1032438A GB 513242 A GB513242 A GB 513242A
Authority
GB
United Kingdom
Prior art keywords
sulphonamide
april
addition
benzene
pure
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
GB10324/38A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Publication of GB513242A publication Critical patent/GB513242A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C311/00—Amides of sulfonic acids, i.e. compounds having singly-bound oxygen atoms of sulfo groups replaced by nitrogen atoms, not being part of nitro or nitroso groups
    • C07C311/30—Sulfonamides, the carbon skeleton of the acid part being further substituted by singly-bound nitrogen atoms, not being part of nitro or nitroso groups
    • C07C311/37—Sulfonamides, the carbon skeleton of the acid part being further substituted by singly-bound nitrogen atoms, not being part of nitro or nitroso groups having the sulfur atom of at least one of the sulfonamide groups bound to a carbon atom of a six-membered aromatic ring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

513,242. Sulphonamides. I.G. FARBENINDUSTRIE AKT.-GES. April 4, 1938, No. 10324. Convention date, April 3, 1937. Addition to 480,059. [Class 2 (iii)] 4-Aminobenzene-sulphonamide is purified by dissolving 4-acetylaminobenzene-sulphonamide in excess caustic alkali solution, heating to split.off the acetyl group and separating the product by making.the solution ammoniacal by the addition of an ammonium salt. An example is given. The Specification as open to inspection under Sect. 91 also refers to the treatment of 4-acylamino compounds in general and splitting off the acyl group. This subject-matter does not appear in the Specification as accepted.
GB10324/38A 1937-04-03 1938-04-04 Process for the manufacture of pure 4-amino-benzene-sulphonamide Expired GB513242A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US513242XA 1937-04-03 1937-04-03

Publications (1)

Publication Number Publication Date
GB513242A true GB513242A (en) 1939-10-06

Family

ID=21970602

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10324/38A Expired GB513242A (en) 1937-04-03 1938-04-04 Process for the manufacture of pure 4-amino-benzene-sulphonamide

Country Status (1)

Country Link
GB (1) GB513242A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995005361A1 (en) * 1993-08-19 1995-02-23 Leonidov Nikolai B METHOD OF OBTAINING A PHYSICALLY STABLE CRYSTALLINE η-MODIFICATION OF PARA-AMINOBENZENE SULPHANILAMIDE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995005361A1 (en) * 1993-08-19 1995-02-23 Leonidov Nikolai B METHOD OF OBTAINING A PHYSICALLY STABLE CRYSTALLINE η-MODIFICATION OF PARA-AMINOBENZENE SULPHANILAMIDE
US5602281A (en) * 1993-08-19 1997-02-11 Leonidov; Nikolai B. Process for preparing physically stable crystalline gamma modification of para-aminobenzenesulfonamide

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