GB500674A - A process for preparing new derivatives of amino-benzene-sulphamides - Google Patents
A process for preparing new derivatives of amino-benzene-sulphamidesInfo
- Publication number
- GB500674A GB500674A GB4233/38A GB423338A GB500674A GB 500674 A GB500674 A GB 500674A GB 4233/38 A GB4233/38 A GB 4233/38A GB 423338 A GB423338 A GB 423338A GB 500674 A GB500674 A GB 500674A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphoxylate
- sulphonamide
- sodium hydroxide
- formaldehyde
- derivatives
- 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
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
500,674. Aminobenzene-sulphonamide derivatives. CHINOIN GYOGYSZER ES VEGYESZETI TERMEKEK GYARA R.T. (DR. KERESZTY & DR. WOLF). Feb. 10, 1938, No. 4233. Convention date, Feb. 13, 1937. [Class 2 (iii)] p-Aminobenzene-sulphonamide and its nuclear. derivatives are converted into water-soluble compounds by treatment with an alkali metal formaldehyde-sulphoxylate in the presence of sodium hydroxide. The reaction is preferably effected with one molecular proportion of sodium hydroxide at a temperature of 60‹ C., after which the cooled product is acidified with hydrochloric acid and the precipitate converted into a salt by dissolution in a caustic alkali. An example is given. The Specification as open to inspection under Sect. 91 also describes the treatment with alkali metal formaldehyde-sulphoxylate in the mole. cular proportions of at least two of: the latter to one of the sulphonamide and in the absence of sodium hydroxide. The products then coritain two formaldehyde-sulphoxylate residues in the molecule. This subject-matter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to Specification 470,462.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU500674X | 1937-02-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB500674A true GB500674A (en) | 1939-02-14 |
Family
ID=10979375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4233/38A Expired GB500674A (en) | 1937-02-13 | 1938-02-10 | A process for preparing new derivatives of amino-benzene-sulphamides |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB500674A (en) |
-
1938
- 1938-02-10 GB GB4233/38A patent/GB500674A/en not_active Expired
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