DE87175C - - Google Patents

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Publication number
DE87175C
DE87175C DENDAT87175D DE87175DA DE87175C DE 87175 C DE87175 C DE 87175C DE NDAT87175 D DENDAT87175 D DE NDAT87175D DE 87175D A DE87175D A DE 87175DA DE 87175 C DE87175 C DE 87175C
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DE
Germany
Prior art keywords
toluidine
mol
tolusafranine
bromoethyl
oxidation
Prior art date
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.)
Active
Application number
DENDAT87175D
Other languages
German (de)
Publication of DE87175C publication Critical patent/DE87175C/de
Active legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B17/00Azine dyes

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT?PATENT OFFICE?

In der Patentschrift Nr. 88954 ist ein Verfahren zur Darstellung von Nneuen Safraninen beschrieben, welches auf der Oxydation von Monoalkyl-o-toluidinen mit gleichen Molecülen eines ρ-Diamine und eines Monamins beruht. Die gleichen Farbstoffe erhält man, wenn man die vom o-Toluidin sich ableitenden Safranine mit Alkylirungsmitteln behandelt.In patent specification No. 88954 there is a method for the preparation of new saffranines described, which is based on the oxidation of monoalkyl-o-toluidines with the same molecules a ρ-diamine and a monamine. The same dyes are obtained if one the safranines derived from o-toluidine are treated with alkylating agents.

Beispiel:Example:

36 Theile Tolusafranin (1 Mol.) werden mit einer Mischung aus 100 Theilen Alkohol und 22 Theilen Bromäthyl (2 Mol.) .10 Stunden lang auf ca. i8o° erhitzt. Das Reactionsproduct wird nach dem Abdestilliren des Alkohols in Wasser gelöst und aus der Lösung das alkylirte Tolusafranin mit Kochsalz gefällt. Die mit demselben erzeugten Färbungen entsprechen den Färbungen, welche mit dem durch Oxydation von je ι Mol. ρ-Amidomonoäthyl-otoluidin, Monoäthyl-o-toluidin und o-Toluidin erhaltenen Safranine der Patentschrift Nr. 88954 erzielt werden.36 parts of tolusafranine (1 mol.) Are mixed with 100 parts of alcohol and 22 parts of bromoethyl (2 mol.). Heated to about 180 ° for 10 hours. The reaction product is dissolved in water after the alcohol has been distilled off, and the alkylated from the solution Tolusafranin precipitated with table salt. The colorations produced with the same correspond the colorations which result from the oxidation of ι mol. ρ-amidomonoethyl-otoluidine, Monoethyl-o-toluidine and o-toluidine obtained Safranine of Patent No. 88954 be achieved.

Durch Anwendung von 1 Mol. Bromäthyl auf ι Mol. Tolusafranin erhält man das Monoäthy ltolüsafranin.Monoethy is obtained by using 1 mole of bromoethyl to 1 mole of tolusafranine ltolüsafranin.

In analoger Weise verläuft die Reaction, wenn man an Stelle des Bromäthyls andere Alkylirungsmittel, wie Benzylchlorid, oder wenn man an Stelle des Tolusafranins die gemischten Safranine anwendet, z. B. die durch Oxydation von p-Phenylendiamin mit 2 Mol. o-Toluidin oder von p-Toluylendiamin mit 2 Mol. Anilin erhältlichen Farbstoffe.The reaction proceeds in an analogous manner if other substances are used in place of the bromoethyl Alkylating agents, such as benzyl chloride, or if mixed instead of tolusafranine Using Safranine, e.g. B. the oxidation of p-phenylenediamine with 2 mol. O-toluidine or dyes obtainable from p-tolylenediamine with 2 moles of aniline.

Claims (1)

Patent-Anspruch:Patent claim: Verfahren zur Darstellung von Farbstoffen der Safraninreihe, darin bestehend, dafs man die einen oder mehrere o-Toluidinreste enthaltenden Safranine mit Alkylirungsmitteln behandelt. Process for the preparation of dyes of the Safranin series, consisting in that one the safranines containing one or more o-toluidine residues are treated with alkylating agents.
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Publications (1)

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Family

ID=359166

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