CH255628A - Process for the preparation of an aromatic acylsulfonamide. - Google Patents
Process for the preparation of an aromatic acylsulfonamide.Info
- Publication number
- CH255628A CH255628A CH255628DA CH255628A CH 255628 A CH255628 A CH 255628A CH 255628D A CH255628D A CH 255628DA CH 255628 A CH255628 A CH 255628A
- Authority
- CH
- Switzerland
- Prior art keywords
- reaction
- act
- aromatic
- dimethyl
- naphthoic acid
- 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
- C07C311/15—Sulfonamides having sulfur atoms of sulfonamide groups bound to carbon atoms of six-membered aromatic rings
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N41/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom
- A01N41/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom containing a sulfur-to-oxygen double bond
- A01N41/04—Sulfonic acids; Derivatives thereof
- A01N41/06—Sulfonic acid amides
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Engineering & Computer Science (AREA)
- Pest Control & Pesticides (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Agronomy & Crop Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines aromatischen Acylsulfonamides. CTe",rentand vorliegenden Patentes ist ein @'c#rfalircn zur Herstellung eines aromati- -#clien Acylsulfonamides. Das Verfahren ist @!a@lurch g-\hennzeichnet, dass man eine Ver- bi.ndwil- der Formel
EMI0001.0013
a.uf eine Verbindung der Formel
EMI0001.0016
worin X und Y zwei reaktionsfähige,
bei der Reaktion mit Ausnahme einer in einem von ihnen enthaltenen NH-Gruppe sich ab spaltende Reste bedeuten, einwirken lässt.
Die entstandene neue Verbindung, das N- (a - Naphthoyl) - 3,4 - dimethyl - benzolsulfon- amid, schmilzt bei 140 und soll als Desin- fektionsmittel, z. B. für Gebrauchsgegen- st < inde, Verwendung finden.
Beispiel <I>1:</I> 18,5 Teile 3,4-Dimethyl-benzolsulfonamid werden in 100 Teilen Nitrobenzol Lvuspen- diert und mit 19 Teilen Aluminiumchlorid und 19 Teilen a-Naphthoesäurechlorid ver setzt. D & q Gemisch wird 2 Stunden auf 50 erwärmt und hierauf dass Lösungsmittel mit.
Wasserdampf abdestilliert. Der Rückstand wird in Sodalösung aufgenommen, mit Tier kohle behandelt und filtriert. Aus dem Fil trat wird das N-(a-Naphthoyl)-3,4-dimethyl- benzolsulfonamid mit Essigsäure ausgefällt und durch Umkristallisieren aus. Alkohol gereinigt.
Statt unter Zuhilfenahme eines Konden sationsmittels, kann die Reaktion auch in Gegenwart eines säurebindenden Mittels, wie z. B. von Pyridin oder Dimethylanilin, oder in Gegenwart eines Katalysators, wie z. B. von Kupferpulver, ausgeführt werden.
An Stelle eines Halogenidss kann auch die freie a-Naphthoe,säure in Gegenwart eines Kondensationsmittelss wie Phosphor- pentoxyd oder Phosphorpentachlorid ver wendet werden.
Beispiel <I>2:</I> 28,6 Teile a-Naphthoesäureamid werden in 200 Teilen absolutem Xylol gelöst. Dann fügt man 8 Teile Natriumamid hinzu und erwärmt bis zum Aufhören der Ammoniak- e-ntwicklung. Nach dem Abkühlen gibt man 40,8 Teile 3,
4-Dimethyl@benzolsulfochlorid in 100 Teilen Xylol zu und erhitzt mehrere Stunden unter Rückfluss. Nach beendeter Reaktion wird das Xylol im Vakuum abde- stilliert. Der Rückstand wird in Bicarbonat- lösung aufgenommen, mit Tierkohle, behan delt, filtriert und durch Ansäuern ausge fällt.
Das N-(a-Naphthoyl)-3,4-dimethyl- benzolsulfonamid wird aus verdünntem Al kohol umkristallisiert und so völlig rein erhalten.
Process for the preparation of an aromatic acylsulfonamide. CTe ", rent and the present patent is a @ 'c # rfalircn for the production of an aromatic - # clien acylsulfonamides. The process is @! A @ lurch g- \ h that one is a combination of the formula
EMI0001.0013
a. to a compound of the formula
EMI0001.0016
where X and Y are two reactive,
in the reaction, with the exception of an NH group contained in one of them, means from splitting radicals, can act.
The resulting new compound, N- (a - naphthoyl) - 3,4 - dimethyl - benzenesulfonamide, melts at 140 and is said to be used as a disinfectant, e.g. B. for utensils, find use.
Example 1: 18.5 parts of 3,4-dimethylbenzenesulfonamide are suspended in 100 parts of nitrobenzene and 19 parts of aluminum chloride and 19 parts of a-naphthoic acid chloride are added. D & q mixture is heated to 50 for 2 hours and then the solvent with.
Steam distilled off. The residue is taken up in soda solution, treated with animal charcoal and filtered. The N- (a-naphthoyl) -3,4-dimethylbenzenesulfonamide is precipitated from the Fil with acetic acid and crystallized out. Alcohol cleaned.
Instead of using a condensation agent, the reaction can also be carried out in the presence of an acid-binding agent, such as. B. of pyridine or dimethylaniline, or in the presence of a catalyst, such as. B. of copper powder.
Instead of a halide, the free α-naphthoic acid can also be used in the presence of a condensing agent such as phosphorus pentoxide or phosphorus pentachloride.
Example <I> 2: </I> 28.6 parts of a-naphthoic acid amide are dissolved in 200 parts of absolute xylene. Then 8 parts of sodium amide are added and the mixture is heated until the ammonia development has ceased. After cooling, 40.8 parts of 3 are added
4-Dimethyl @ benzenesulfochloride in 100 parts of xylene and heated under reflux for several hours. After the reaction has ended, the xylene is distilled off in vacuo. The residue is taken up in bicarbonate solution, treated with animal charcoal, filtered and precipitated by acidification.
The N- (a-naphthoyl) -3,4-dimethylbenzenesulfonamide is recrystallized from dilute alcohol and thus obtained completely pure.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH249867T | 1944-10-25 | ||
CH255628T | 1944-10-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH255628A true CH255628A (en) | 1948-06-30 |
Family
ID=25729404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH255628D CH255628A (en) | 1944-10-25 | 1944-10-25 | Process for the preparation of an aromatic acylsulfonamide. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH255628A (en) |
-
1944
- 1944-10-25 CH CH255628D patent/CH255628A/en unknown
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