DE402642C - Process for the preparation of keto derivatives of the thiazine series - Google Patents

Process for the preparation of keto derivatives of the thiazine series

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Publication number
DE402642C
DE402642C DEA38751D DEA0038751D DE402642C DE 402642 C DE402642 C DE 402642C DE A38751 D DEA38751 D DE A38751D DE A0038751 D DEA0038751 D DE A0038751D DE 402642 C DE402642 C DE 402642C
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DE
Germany
Prior art keywords
preparation
keto derivatives
thiazine series
oxy
sulfides
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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
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DEA38751D
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German (de)
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Agfa Gevaert NV
Original Assignee
Aktiengesellschaft fuer Anilinfabrikation GmbH
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Priority to DEA38751D priority Critical patent/DE402642C/en
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Publication of DE402642C publication Critical patent/DE402642C/en
Expired legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)

Description

Verfahren zur Darstellung von Ketoderivaten der Thiazinreihe. Wie gefunden wurde, gehen q.-Oxy-2'-aminodiarylsulfide durch Oxydation in Ketoderivate der Thiazinreihe über. Man braucht bei der Darstellung dieser Verbindungen nicht von fertig gebildeten 4-Oxy-2'-aminodiarylsulfiden auszugehen, sondern man gelangt zu demselben Ergebnis, wenn man deren Vorstufe, 4-Oxy-2'-nitrodiarylsulfide mit alkalischen Reduktionsmitteln, wie Alkalisulfiden, Hydrosulfiten, Zinkstaub und Alkalihydroxyden, behandelt. Hierbei entstehen nur wenig die zu erwartenden Aminoverbindungen, in der Hauptsache bildet sich unter Vermittelung des Sauerstoffs der Nitrogruppe der Azinring.Process for the preparation of keto derivatives of the thiazine series. As was found, q.-Oxy-2'-aminodiaryl sulfides are oxidized to give keto derivatives the thiazine series above. You do not need to represent these connections to start from completely formed 4-oxy-2'-aminodiaryl sulfides, but one arrives to the same result if one uses its precursor, 4-oxy-2'-nitrodiaryl sulfide alkaline reducing agents such as alkali sulfides, hydrosulfites, zinc dust and Alkali hydroxides. Only a few of the expected amino compounds are formed here, in the main the nitro group is formed through the mediation of oxygen the azin ring.

Die neuen Verbindungen zeigen teils selbst Farbstoffcharakter, teils sollen sie als Ausgangsstoffe bei der Darstellung von Farbstoffen Verwendung finden.Some of the new compounds themselves show the character of a dye, some of them they should be used as starting materials in the representation of dyes.

Beispiel 1: i T1. 2-Nitrophenyl-4-oxy-i-naphtylsulfid, erhalten aus 2-Nitrophenylschwefelchlorid und 4-Oxynaphtalin (vgl. Zin c k e, Annalen der Chemie 391, 1912, Seite 85 bis 86) wird mit i T1. Natriumhydroxydlösung 35prozentig in ioo T1. Wasser gelöst. Bei etwa 7o bis 8o° werden noch etwa 2 T1. der Natriumhydroxydlösung und 2 - 2,5 T1. Natriumhydrosulfit zugesetzt. Die tiefbraune Lösung wird gelblich und gibt beim Durchblasen von Luft ein sich abscheidendes rotes Oxydationsprodukt, das abgesaugt wird. Aus Alkohol kristallisiert es in prachtvollen rötlichen metallisch glänzenden Nadeln vom Schmp. 17q.°. Die Verbindung ist unlöslich in Alkalien und Salzsäure, ziemlich leicht löslich in Eisessig, Benzol und mit tiefvioletter Farbe in konz. Schwefelsäure, schwerer löslich in Aethyl- und Methylalkohol. Aus der gelben Hydrosulfitküpe wird Baumwolle braun, Wolle rotbraun gefärbt. Die Verbindung hat vermutlich die Konstitution die Analyse stimmt auf die Formel C1,;H90NS. Beispiel 2: Ersetzt man im vorigen Beispiel i-Oxynaphtalin durch 8-Chlor-i-oxynaphtalin, so erhält man eine aus Essigsäure in feinen, zum Teil zu Sternchen vereinigten Nadeln kristallisierende Verbindung vom Schmp. 199 bis 2oo°, die schwer löslich in Alkohol, leichter in Benzol und Eisessig ist und sich mit braunvioletter Farbe in konz. Schwefelsäure löst.Example 1: i T1. 2-Nitrophenyl-4-oxy-i-naphthylsulfide, obtained from 2-nitrophenylsulfur chloride and 4-oxynaphthalene (cf. Zincke, Annalen der Chemie 391, 1912, pages 85 to 86) becomes i T1. Sodium hydroxide solution 35 percent in 100 T1. Dissolved in water. At about 7o to 8o ° there are still about 2 T1. the sodium hydroxide solution and 2 - 2.5 T1. Sodium hydrosulfite added. The deep brown solution becomes yellowish and, when air is blown through, gives a separating red oxidation product, which is sucked off. From alcohol it crystallizes in splendid reddish metallic needles with a melting point of 17q. °. The compound is insoluble in alkalis and hydrochloric acid, fairly easily soluble in glacial acetic acid, benzene and with a deep purple color in conc. Sulfuric acid, less soluble in ethyl and methyl alcohol. From the yellow hydrosulfite vat, cotton turns brown and wool turns red-brown. The connection probably has the constitution the analysis agrees with the formula C1,; H90NS. Example 2: If i-oxynaphthalene is replaced by 8-chloro-i-oxynaphthalene in the previous example, a compound with a melting point of 199 to 200 ° crystallizing from acetic acid in fine needles, some of which are combined to form asterisks, is obtained and is sparingly soluble in alcohol , is lighter in benzene and glacial acetic acid and has a brownish-violet color in conc. Sulfuric acid dissolves.

Claims (2)

PATENT-ANspRÜcHE: i. Verfahren zur Darstellung von Ketoderivaten der Thiazinreihe, darin bestehend, daB man 4-Oxy-2'-aminodiarylsulfide oxydiert. PATENT CLAIMS: i. Process for the preparation of keto derivatives of Thiazine series, consisting in oxidizing 4-oxy-2'-aminodiaryl sulfides. 2 Ausführungsform des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daB man 4-Oxy-2'-nitrodiarylsulfide mit alkalischen Reduktionsmitteln behandelt.2 embodiment of the process according to Claim 1, characterized in that 4-oxy-2'-nitrodiaryl sulfides are used treated with alkaline reducing agents.
DEA38751D 1922-11-04 1922-11-04 Process for the preparation of keto derivatives of the thiazine series Expired DE402642C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA38751D DE402642C (en) 1922-11-04 1922-11-04 Process for the preparation of keto derivatives of the thiazine series

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA38751D DE402642C (en) 1922-11-04 1922-11-04 Process for the preparation of keto derivatives of the thiazine series

Publications (1)

Publication Number Publication Date
DE402642C true DE402642C (en) 1924-09-17

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Family Applications (1)

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DEA38751D Expired DE402642C (en) 1922-11-04 1922-11-04 Process for the preparation of keto derivatives of the thiazine series

Country Status (1)

Country Link
DE (1) DE402642C (en)

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