DE548823C - Process for the preparation of alkyl mercapto derivatives of 2-oxynaphthalene-3-carboxylic acid - Google Patents

Process for the preparation of alkyl mercapto derivatives of 2-oxynaphthalene-3-carboxylic acid

Info

Publication number
DE548823C
DE548823C DEI41986D DEI0041986D DE548823C DE 548823 C DE548823 C DE 548823C DE I41986 D DEI41986 D DE I41986D DE I0041986 D DEI0041986 D DE I0041986D DE 548823 C DE548823 C DE 548823C
Authority
DE
Germany
Prior art keywords
oxynaphthalene
carboxylic acid
alkyl mercapto
preparation
mercapto derivatives
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.)
Expired
Application number
DEI41986D
Other languages
German (de)
Inventor
Dr Willy Broeg
Dr Heinrich Morschel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI41986D priority Critical patent/DE548823C/en
Application granted granted Critical
Publication of DE548823C publication Critical patent/DE548823C/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C323/00—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups

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

Description

Verfahren zur Darstellung von Alkylmercaptoderivaten der 2-Oxynaphthalin-3-carbonsäure Es wurde gefunden, daß man zu bisher unbekannten Alkylmercaptoderivaten der 2-Oxynaphthalin-3-carbonsäure gelangt, wenn man auf die Alkalisalze von Alkylmercaptoderivaten des ß-Naphthols oder auf die freien Naphthole bei Gegenwart von Carbonaten der Alkalien Kohlensäure unter Druck bei erhöhter Temperatur einwirken läßt. Die neuen Säuren sind wertvolle Zwischenprodukte für Farbstoffe.Process for the preparation of alkyl mercapto derivatives of 2-oxynaphthalene-3-carboxylic acid It has been found that hitherto unknown alkyl mercapto derivatives of 2-oxynaphthalene-3-carboxylic acid can be obtained when one comes to the alkali salts of alkyl mercapto derivatives of ß-naphthol or on the free naphthols in the presence of carbonates of the alkalis carbonic acid can act under pressure at elevated temperature. The new acids are valuable Intermediates for dyes.

Beispiel Das Natriumsalz des 6-Methvlmercapto-2-oxynaphthalins (dargestellt nach Z i n c k e, Berichte 51 [igi8], S.357) wird auf ,28o° io Stunden unter einem Kohlensäuredi'uck von 5o bis 6o Atm. erhitzt. Die Schmelze wird nach dem Erkalten in Wasser aufgenommen, neutral gestellt und filtriert. Aus dem Filtrat scheidet sich die gelb gefärbte 6-Methylmercapto- 2-oxy naphthalin-3-carbonsäure ab. Aus Eisessig umkristallisiert zeigt sie den Schmelzpunkt 2261. Sie ist löslich in Äther und leicht löslich in Dichlorbenzol und Eisessig.EXAMPLE The sodium salt of 6-methyl mercapto-2-oxynaphthalene (prepared according to Z incke, reports 51 [igi8], p.357) is kept under a carbonic acid pressure of 50 to 60 atm. heated. After cooling, the melt is taken up in water, neutralized and filtered. The yellow-colored 6-methylmercapto-2-oxy naphthalene-3-carboxylic acid separates out of the filtrate . Recrystallized from glacial acetic acid, it has a melting point of 2261. It is soluble in ether and easily soluble in dichlorobenzene and glacial acetic acid.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von Alkylmercaptoderivaten der 2-Oxynaphthalin-3-carbonsäure, dadurch gekennzeichnet, daß man auf die Alkalisälze von Alkylmercaptoderivaten des ß-Naphthols oder auf die freien Naphthole bei Gegenwart von Alkalicarbonaten Kohlensäure unter Druck bei erhöhter Temperatur einwirken läßt.PATENT CLAIM: Process for the preparation of alkyl mercapto derivatives of 2-oxynaphthalene-3-carboxylic acid, characterized in that the alkali salts of alkyl mercapto derivatives of ß-naphthol or of the free naphthols in the presence of alkali carbonates allows carbonic acid to act under pressure at elevated temperature.
DEI41986D 1930-10-08 1930-10-08 Process for the preparation of alkyl mercapto derivatives of 2-oxynaphthalene-3-carboxylic acid Expired DE548823C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI41986D DE548823C (en) 1930-10-08 1930-10-08 Process for the preparation of alkyl mercapto derivatives of 2-oxynaphthalene-3-carboxylic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI41986D DE548823C (en) 1930-10-08 1930-10-08 Process for the preparation of alkyl mercapto derivatives of 2-oxynaphthalene-3-carboxylic acid

Publications (1)

Publication Number Publication Date
DE548823C true DE548823C (en) 1932-04-20

Family

ID=7190673

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI41986D Expired DE548823C (en) 1930-10-08 1930-10-08 Process for the preparation of alkyl mercapto derivatives of 2-oxynaphthalene-3-carboxylic acid

Country Status (1)

Country Link
DE (1) DE548823C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7815431B2 (en) 2005-12-28 2010-10-19 Gunther Heisskanaltechnik Gmbh Actuating device for shut-off needles in injection molding devices comprising needle shut-off nozzles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7815431B2 (en) 2005-12-28 2010-10-19 Gunther Heisskanaltechnik Gmbh Actuating device for shut-off needles in injection molding devices comprising needle shut-off nozzles

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