CH233745A - Process for the preparation of a condensation product of a 1-aminoaryl-5-pyrazolone-4-sulfonic acid. - Google Patents
Process for the preparation of a condensation product of a 1-aminoaryl-5-pyrazolone-4-sulfonic acid.Info
- Publication number
- CH233745A CH233745A CH233745DA CH233745A CH 233745 A CH233745 A CH 233745A CH 233745D A CH233745D A CH 233745DA CH 233745 A CH233745 A CH 233745A
- Authority
- CH
- Switzerland
- Prior art keywords
- sep
- sulfonic acid
- aminoaryl
- pyrazolone
- condensation product
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
- C07D403/14—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing three or more hetero rings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Kondensationsproduktes einer 1-Aminoaryl-5-pyrazolon-4-sulfonsäure. Gegenstand vorliegender Erfindung ist ein Verfahren zur Herstellung eines Konden sationsproduktes einer 1-Amincaryl-5-pyrazo- lon-4-sulfonssäure. Das Verfahren ist dadurch gekennzeichnet, d#%ss man 2 Mol 1-(4'-Amino,- phenyl) - 3-,
methyl- 5 -pyrazolon-4-sulf onsäure mit 1 Mol Cya-nurchlo.rid zur Umsetzung bringt.
Die neue Verbindung stellt als Natrium- salz ein weisses Pulver dar. Sie isst ein wert volles Zwischenprodukt für die Herstellung von Farbstoffen.
<I>Beispiel:</I> Eins neutrale Lösung von 53,8 Gewichts,- teilen 1- (4'- Aminophenyl) - 3 - methyl - 5 - pyr- azalon-4-siuHonsäure lässt man bei ungefähr 25-3Q zu einer Suspension von 18,5 Ge- wichtstegen Cyanurchlorid in wässerigem Aceton,
laufen. Danach wird die kongosaure Reaktion durch Zugabe von Natriumcarbonat bis zur ;sehwach alkaLschen Reaktion ab gestumpft.
Das Natriumsalz des Kondensa- tionspro:d\aktes wird durch Zugabe von Na- trium:chlorid als :amorpher Niederschlag ge- fällt. In trockenem Zustand ist es ein weisses Pulver und besitzt die folgende Zusammen- setzung
EMI0001.0066
Process for the preparation of a condensation product of a 1-aminoaryl-5-pyrazolone-4-sulfonic acid. The present invention relates to a process for the preparation of a condensation product of a 1-amine-caryl-5-pyrazolone-4-sulfonic acid. The process is characterized in that 2 moles of 1- (4'-amino, - phenyl) - 3-,
methyl 5-pyrazolone-4-sulfonic acid with 1 mole of Cya-nurchlo.rid to implement.
The new compound is a white powder in the form of sodium salt. It is a valuable intermediate product for the manufacture of dyes.
<I> Example: </I> A neutral solution of 53.8 parts by weight of 1- (4'-aminophenyl) - 3 - methyl - 5 - pyrazalone-4-siuHonic acid is allowed at about 25-3Q a suspension of 18.5 parts by weight of cyanuric chloride in aqueous acetone,
to run. The Congo acidic reaction is then blunted by adding sodium carbonate to the point of a viscous alkaline reaction.
The sodium salt of the condensation process is precipitated as an amorphous precipitate by adding sodium: chloride. When dry it is a white powder and has the following composition
EMI0001.0066
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE233745X | 1939-06-08 | ||
CH229424T | 1941-06-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH233745A true CH233745A (en) | 1944-08-15 |
Family
ID=25727351
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH233745D CH233745A (en) | 1939-06-08 | 1941-06-12 | Process for the preparation of a condensation product of a 1-aminoaryl-5-pyrazolone-4-sulfonic acid. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH233745A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2618636A (en) * | 1948-08-24 | 1952-11-18 | Gen Aniline & Film Corp | Bis(2-morpholino-4-amino-1,3,5-triazyl-(6)-)-4,4'-diaminostilbene sulfonic and carboxylic acids |
-
1941
- 1941-06-12 CH CH233745D patent/CH233745A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2618636A (en) * | 1948-08-24 | 1952-11-18 | Gen Aniline & Film Corp | Bis(2-morpholino-4-amino-1,3,5-triazyl-(6)-)-4,4'-diaminostilbene sulfonic and carboxylic acids |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH233745A (en) | Process for the preparation of a condensation product of a 1-aminoaryl-5-pyrazolone-4-sulfonic acid. | |
CH232290A (en) | Process for producing a diazoamino compound. | |
CH232291A (en) | Process for producing a diazoamino compound. | |
CH232292A (en) | Process for producing a diazoamino compound. | |
DE941977C (en) | Process for the preparation of sulfur and nitrogen containing organic compounds | |
CH236163A (en) | Process for the production of a polyether. | |
CH117163A (en) | Process for the production of chromating dyes. | |
CH168343A (en) | Process for the preparation of a higher molecular weight sulfur compound. | |
CH168923A (en) | Process for the preparation of 2-ethylaminobenzene-1-carboxylic acid-4-sulfonic acid. | |
CH171586A (en) | Process for producing a water-soluble diazoamido compound. | |
CH140593A (en) | Process for the preparation of a condensation product of the benzodiazine series. | |
CH235566A (en) | Process for the preparation of a condensation product of a 1-aminoaryl-5-pyrazolone-4-sulfonic acid. | |
CH314915A (en) | Process for the preparation of 2-thiocyano-4: 6-diamino-s-triazine | |
CH171588A (en) | Process for producing a water-soluble diazoamido compound. | |
CH158703A (en) | Process for the production of a neutral-soluble complex salt of trivalent antimony. | |
CH272475A (en) | Process for the production of a new substance suitable for textile treatment. | |
CH247123A (en) | Process for the preparation of a salt of N- (4-amino-benzenesulfone) -N'-benzyl urea. | |
CH171587A (en) | Process for producing a water-soluble diazoamido compound. | |
CH162658A (en) | Process for the preparation of the sodium salt of an arsenic complex compound of catechinaric acid. | |
CH127934A (en) | Process for the preparation of a solid diazo salt. | |
CH169351A (en) | Process for producing a water-soluble diazoamido compound. | |
CH123638A (en) | Process for the production of a diazo salt preparation for dyeing and printing. | |
CH180310A (en) | Process for the preparation of an organic bismuth compound. | |
CH148343A (en) | Process for the preparation of a water-soluble secondary diazoamino compound of aromatic series. | |
CH175235A (en) | Process for the preparation of 1,3,5-di- (p-chlorophenylamino) -oxybenzene. |