CH253170A - Process for the preparation of a p-amino-benzene-sulfonacylamide. - Google Patents
Process for the preparation of a p-amino-benzene-sulfonacylamide.Info
- Publication number
- CH253170A CH253170A CH253170DA CH253170A CH 253170 A CH253170 A CH 253170A CH 253170D A CH253170D A CH 253170DA CH 253170 A CH253170 A CH 253170A
- Authority
- CH
- Switzerland
- Prior art keywords
- compound
- dimethyl
- saponification
- radical
- formula
- Prior art date
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
-
- 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
- C07C311/45—Sulfonamides, the carbon skeleton of the acid part being further substituted by singly-bound nitrogen atoms, not being part of nitro or nitroso groups at least one of the singly-bound nitrogen atoms being part of any of the groups, X being a hetero atom, Y being any atom, e.g. N-acylaminosulfonamides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines p-Amino-benzol-sulfonacylamides. Gegenstand vorliegenden Patentes ist ein Verfahren zur Herstellung eines acylierten p- Aniino-benzol-sulfonamides. Das Verfahren ist dadurch gekennzeichnet,
dass man eine Verbindung der Formel
EMI0001.0007
auf eine Verbindung der Formel
EMI0001.0008
< orin X und Y zwei bei der Reaktion mit Ausnahme einer in einem von ihnen ent haltenen NH-Gruppe sich abspaltende Reste urid R einen durch Verseifung in die Amino- gruppe überführbaren Rest bedeuten,
en- wirken lä.sst und in der erhaltenen Verbin- dinig den Rest R durch Verseifung in die A.ininogruppe überführt.
Die entstandene neue Verbindung, das 1)-A.niino-benzolsulfon-N,- [a,a-dimethyl-a-(2- (@lilor-benzyl)-a,cetyl]-amid, bildet farblose Kristalle vom Schmelzpunkt 158 . Sie lässt sich mit anorganischen oder organischen Basen, in Salze überführen. Sie soll therapeu tische Verwendung finden.
Beispiel: 4(i Teile p-Ca,rbomethoxyamino-benzol- sulfonamid werden in 200 Teilen Pyridin suspendiert, mit 46,5 Teilen a,a-Dimethyl-a- (2 - chlor - benzyl) - essigsäurechlorid versetzt und 4 Stunden auf 90-100 erhitzt. Nach dem Abkühlen wird mit Eis und Salzsäure zersetzt, abgesaugt und mit Wasser nachge waschen. Der Niederschlag wird in verdünn ter Natronlauge gelöst, mit Tierkohle ge schüttelt und mit Säure ausgefällt.
Das rohe Carbomethoxyderivat wird mit verdünnter Natronlauge bei 50-60 verseift und so das . p-Amino-benzolsulf on-N,- [a,a-dimethyl-a, (2 chlor-benzyl)-acetyl]-amid erhalten, das sich aus Alkohol völlig rein darstellen lässt und dann einen Schmelzpunkt von 158 zeigt.
Man kann die Kondensation des p-Carbo- methoxya.mino-benzolsulfona.mides mit a,a- Dimethyl - a - (2 - chlor - benzyl) - essigsäure- chlorid anstatt in Pyridin auch in Chlor benzol unter Zusatz von Kupferpulver oder in Nitrobenzol unter Zusatz von Aluminium-, chlorid durchführen.
Ebensogut kann man von einer Metallverbindung des p-Carbo- methoxyamino-benzolsulfonamides ausgehen und diese mit a,a - Dimethyl -<I>a -</I> (2 - chlor- benzyl)-essigsäurechlorid umsetzen.
Ferner, kann man p-Carbomethoxyamino-benzolsul- fonamid auch mit a,a-Dimethyl-a-(2-chlor- benzyl)-essigsäure in Gegenwart von Kon densationsmitteln, z. B. von Phosphor- pentoxyd oder von Phosphorpentachlorid, umsetzen.
Zum gleichen Endprodukt gelangt inan auch, wenn man eine Metallverbindung des u,,a -Dimethyl - a - (2- chlor-benzyl)-essigsäure- amides mit einem p - Carbomethoxyamino- benzolsulfohalogenid umsetzt und das erhal tene Carbomethoxyderivat verseift.
Process for the preparation of a p-amino-benzene-sulfonacylamide. The present patent relates to a process for the preparation of an acylated p-amino-benzene-sulfonamide. The procedure is characterized by
that you can get a compound of the formula
EMI0001.0007
to a compound of the formula
EMI0001.0008
<orin X and Y are two radicals which are split off in the reaction with the exception of one of them contained NH groups and R is a radical which can be converted into the amino group by saponification,
and in the compound obtained the radical R is converted into the amino group by saponification.
The resulting new compound, 1) -A.niino-benzenesulfon-N, - [a, a-dimethyl-a- (2- (@lilor-benzyl) -a, cetyl] -amide, forms colorless crystals with a melting point of 158 It can be converted into salts with inorganic or organic bases and is intended to be used in therapy.
Example: 4 (1 part of p-Ca, r-bomethoxyamino-benzenesulfonamide are suspended in 200 parts of pyridine, 46.5 parts of a, a-dimethyl-a- (2-chloro-benzyl) -acetic acid chloride are added and the mixture is set to 90 for 4 hours After cooling, it is decomposed with ice and hydrochloric acid, filtered off with suction and washed with water.The precipitate is dissolved in dilute sodium hydroxide solution, shaken with animal charcoal and precipitated with acid.
The crude carbomethoxy derivative is saponified with dilute sodium hydroxide solution at 50-60 and so that. p-Amino-benzenesulfon-N, - [a, a-dimethyl-a, (2 chlorobenzyl) -acetyl] -amide, which can be prepared in completely pure form from alcohol and then has a melting point of 158.
The condensation of p-Carbo-methoxya.mino-benzenesulfona.mides with a, a-dimethyl-a- (2-chloro-benzyl) -acetic acid chloride can also be used in chlorobenzene with the addition of copper powder or in nitrobenzene instead of in pyridine Perform with the addition of aluminum, chloride.
One can just as well start from a metal compound of p-carbomethoxyamino-benzenesulfonamide and react this with a, a - dimethyl - <I> a - </I> (2 - chlorobenzyl) acetic acid chloride.
Furthermore, you can p-carbomethoxyamino-benzenesulfonamide with a, a-dimethyl-a- (2-chlorobenzyl) acetic acid in the presence of condensation agents, eg. B. of phosphorus pentoxide or phosphorus pentachloride, implement.
The same end product is also obtained if a metal compound of u ,, a -dimethyl-a - (2-chloro-benzyl) -acetic acid amide is reacted with a p-carbomethoxyamino-benzenesulfohalide and the carbomethoxy derivative obtained is saponified.
Claims (1)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH219520T | 1940-06-21 | ||
CH253170T | 1943-09-14 | ||
CH242285T | 1943-11-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH253170A true CH253170A (en) | 1948-02-15 |
Family
ID=34139168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH253170D CH253170A (en) | 1940-06-21 | 1943-09-14 | Process for the preparation of a p-amino-benzene-sulfonacylamide. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH253170A (en) |
-
1943
- 1943-09-14 CH CH253170D patent/CH253170A/en unknown
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