CH305331A - Process for the preparation of 1-amino-3-imino-methoxyisoindolenine. - Google Patents
Process for the preparation of 1-amino-3-imino-methoxyisoindolenine.Info
- Publication number
- CH305331A CH305331A CH305331DA CH305331A CH 305331 A CH305331 A CH 305331A CH 305331D A CH305331D A CH 305331DA CH 305331 A CH305331 A CH 305331A
- Authority
- CH
- Switzerland
- Prior art keywords
- amino
- imino
- methoxyisoindolenine
- anions
- preparation
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
- C07D209/44—Iso-indoles; Hydrogenated iso-indoles
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Indole Compounds (AREA)
Description
Verfahren zur Herstellung von 1-Amino-3-imino-methoxyisoindolenin. Es wurde gefunden, dass man in analoger Weise wie im Hauptpatent ein 1-Amino-3- imino-methoxyisoindolenin erhalten kann, wenn man statt von Phthalimid von 4-Me- thoxyphthalimid ausgeht. Das letztere kann während der Reaktion aus 4-Methoxyphthal- säureanhydrid gebildet werden.
Das 1-Amino-3-imino-methoxyisoindolenin bildet weisse Kristalle, die sich bei etwa 175 unter Bildung einer grünen Schmelze zerset zen. Die Stellung der Methoxygruppe ist nicht sicher bekannt; in Frage kommt Stellung 5 oder 6. Es soll als Farbstoffzwischenprodukt verwendet werden, das unter anderem zur Herstellung eines Phthalocyaninfarbstoffes auf der Faser dienen kann.
Beispiel: 17,7 Gewichtsteile 4-Methoxy-phthalimid werden bei 80 unter Rühren in eine homogene Schmelze aus 32,4 Gewichtsteilen Harnstoff und 19,2 Gewichtsteilen Ammoniumnitrat unter Zusatz von 0,03 Gewichtsteilen Ammo- niummolybdat eingetragen. Beim anschliessen den Hochheizen schäumt die Schmelze zwi- sehen 120 und 140 , dann bildet sich bei 174 bis 176 eine braungelbe, fast klare Schmelze.
Nach etwa zweistündigem Rühren erfolgt fast momentan eine helle kristalline Abschei- dung, und der Ansatz wird ziemlich zäh. Man verdünnt nun durch rasches Zurühren von 100 Gewichtsteilen eiskalten Wassers, rührt bis zur Erzielung eines homogenen Breies, saugt ab, wäscht gut mit Wasser aus und trocknet. Man erhält 22;6 Gewichtsteile fast farbloses Nitrat des 1-Imino-3-amino-methoxy-isoindo- lenins (= 89 % der Theorie). Zersetzungs punkt etwa 247 . Mit wässriger Natronlauge wird daraus die freie Base gewonnen. Diese zersetzt sich bei etwa 175 unter Bildung einer grünen Schmelze.
In gleicher Weise kann man von 17,8 Gewichtsteilen4-Methoxy- phthalsäureanhydrid ausgehen.
Process for the preparation of 1-amino-3-imino-methoxyisoindolenine. It has been found that a 1-amino-3-imino-methoxyisoindolenine can be obtained in a manner analogous to that in the main patent if 4-methoxyphthalimide is used instead of phthalimide. The latter can be formed from 4-methoxyphthalic anhydride during the reaction.
The 1-amino-3-imino-methoxyisoindolenine forms white crystals that decompose at about 175 to form a green melt. The position of the methoxy group is not known for certain; Position 5 or 6 is possible. It is intended to be used as an intermediate dye product which, among other things, can serve to produce a phthalocyanine dye on the fiber.
Example: 17.7 parts by weight of 4-methoxyphthalimide are added at 80 to a homogeneous melt of 32.4 parts by weight of urea and 19.2 parts by weight of ammonium nitrate with the addition of 0.03 parts by weight of ammonium molybdate. When the heating is then carried out, the melt foams between 120 and 140, then a brown-yellow, almost clear melt forms at 174 to 176.
After about two hours of stirring, a pale crystalline deposit occurs almost instantaneously, and the batch becomes rather tough. The mixture is then diluted by rapidly adding 100 parts by weight of ice-cold water, stirred until a homogeneous paste is obtained, filtered off with suction, washed thoroughly with water and dried. 22.6 parts by weight of almost colorless nitrate of 1-imino-3-aminomethoxy-isoindolenine (= 89% of theory) are obtained. Decomposition point about 247. The free base is obtained from this with aqueous sodium hydroxide solution. This decomposes at around 175 to form a green melt.
In the same way, one can start from 17.8 parts by weight of 4-methoxyphthalic anhydride.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB305331X | 1949-08-25 | ||
CH293696T | 1950-08-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH305331A true CH305331A (en) | 1955-02-15 |
Family
ID=25733402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH305331D CH305331A (en) | 1949-08-25 | 1950-08-21 | Process for the preparation of 1-amino-3-imino-methoxyisoindolenine. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH305331A (en) |
-
1950
- 1950-08-21 CH CH305331D patent/CH305331A/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE1009623B (en) | Process for the preparation of ª ‡ -oxy-1,2,5,6-tetrahydrobenzylphosphinous acid or its alkali metal salts | |
CH305331A (en) | Process for the preparation of 1-amino-3-imino-methoxyisoindolenine. | |
CH532160A (en) | Preparation of concentrated solutions of | |
CH305332A (en) | Process for the preparation of 1-amino-3-imino-ethoxyisoindolenine. | |
EP0026847B1 (en) | Process for preparing 4-amino-5-chloro-1-phenylpyridazone-(6) | |
DE1029965B (en) | Process for the preparation of dyes of the phthalocyanine series | |
DE889157C (en) | Process for the preparation of amide-type condensation compounds | |
DE762425C (en) | Process for the preparation of quaternary ammonium compounds containing an acylated benzylamino group | |
DE737931C (en) | Process for the preparation of 2,4-diaminochinazoline | |
DE833809C (en) | Process for the preparation of 4-aminobenzenesulfonylaminomethanesulfonic acid | |
DE802636C (en) | Process for the preparation of glycosides of sulfanilamide | |
CH305333A (en) | Process for the preparation of 1-amino-3-imino-acetyl-aminoisoindolenine. | |
DE444968C (en) | Process for the preparation of chromates of magnesium | |
DE704336C (en) | Process for the preparation of the sulfuric acid esters of glucosides | |
DE1155119B (en) | Process for the preparation of derivatives of 2-nitro-1-aminoaryl-N-sulfonic acids | |
DE947971C (en) | Process for the preparation of hydrazine compounds | |
DE2013372C3 (en) | Process for the production of nitrilo-tris (methylenephosphonic acid) | |
DE1645895B2 (en) | Process for the preparation of pyra zinyl thiophosphates | |
DE2559540B2 (en) | 1-hydroxy-3,6-disulfo-8-acetamino-2- <3'-phosphonophenylazo) naphthalene and its salts | |
DE902256C (en) | Process for the production of di-ethylene diureas | |
DE1543678C (en) | Process for the preparation of p-hydroxybenzoic acid | |
DE956509C (en) | Process for the production of 7-dehydrocholesterol | |
DE2641979A1 (en) | PROCESS FOR THE PREPARATION OF 5-AMINOCARBONYL-2,4,6-TRIHYDROXYPYRIMIDINE | |
DE2048913B2 (en) | Process for the preparation of 1-aminoalkane-1,1-diphosphonic acids | |
DE949885C (en) | Process for the preparation of condensation products of sulfaguanidine |