DE513798C - Process for the preparation of aromatic hydroxyl compounds - Google Patents

Process for the preparation of aromatic hydroxyl compounds

Info

Publication number
DE513798C
DE513798C DEI33869D DEI0033869D DE513798C DE 513798 C DE513798 C DE 513798C DE I33869 D DEI33869 D DE I33869D DE I0033869 D DEI0033869 D DE I0033869D DE 513798 C DE513798 C DE 513798C
Authority
DE
Germany
Prior art keywords
preparation
aromatic hydroxyl
hydroxyl compounds
chlorobenzene
passed
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
DEI33869D
Other languages
German (de)
Inventor
Dr Gerhard Kroener
Dr Friedrich Wilhelm Stauf
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 DEI33869D priority Critical patent/DE513798C/en
Application granted granted Critical
Publication of DE513798C publication Critical patent/DE513798C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/01—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis
    • C07C37/02—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis by substitution of halogen
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
    • C07C201/06—Preparation of nitro compounds
    • C07C201/12—Preparation of nitro compounds by reactions not involving the formation of nitro groups

Landscapes

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

Description

Verfahren zur Darstellung von aromatischen Hydroxylverbindungen Durch das Hauptpatent 485 310 ist ein Verfahren zur Darstellung von Phenol aus Chlorbenzol geschützt. Es besteht darin, daß Chlorbenzol mit Wasserdampf über erhitztes aktiviertes Kieselgel geleitet wird.Process for the preparation of aromatic hydroxyl compounds By the main patent 485 310 is a process for the preparation of phenol from chlorobenzene protected. It consists in the fact that chlorobenzene is activated with steam over heated Silica gel is passed.

Bei der weiteren Ausarbeitung des Gebietes wurde gefunden, daß sich das Verfahren nicht nur auf Chlorbenzol, sondern auch auf die anderen Halogenverbindungen des Benzols und dessen Substitutionsprodukte ausdehnen läßt. Beispiel r Über aktive Kieselsäure wird bei 4oo° Brombenzol mit Wasserdampf gemischt geleitet. Es entsteht Phenol in 65 bis 7o"i" Ausbeute. Beispie12 Über aktive Kieselsäure wird bei 380° Jodbenzol geleitet, und es entsteht Phenol in 7o"/" Ausbeute. Beispiel 3 Über aktive Kieselsäure wird bei q.2o° m-Chlornitrobenzol geleitet. Es entsteht m-Nitrophenol. Die Ausbeute beträgt 70°1". Beispiel q. Über aktive Kieselsäure wird p-Chlortoluol mit Wasserdampf mit 38o° geleitet. Es entsteht das entsprechende Kresoi in einer Ausbeute von 6o"/".In the further development of the area it was found that the process not only applies to chlorobenzene, but also to the other halogen compounds of benzene and its substitution products can be expanded. Example r About active Silicic acid is passed through mixed with water vapor at 4oo ° bromobenzene. It arises Phenol in 65 to 70 "i" yield. Beispie12 About active silica is at 380 ° Iodobenzene is passed and phenol is produced in 70 "/" yield. Example 3 About active Silicic acid is passed through at q20 ° m-chloronitrobenzene. The result is m-nitrophenol. The yield is 70 ° 1 ". Example q. Active silica is converted into p-chlorotoluene passed with steam at 38o °. The corresponding kresoi is created in one Yield of 60 "/".

Claims (1)

PATENTANSPRUCH: Abänderung des durch Patent 485 310 geschützten Verfahrens zur Darstellung von Phenol aus Chlorbenzol, dadurch gekennzeichnet, daß man hier an Stelle von Chlorbenzol ganz allgemein Halogenverbindungen der Benzolreihe verwendet.PATENT CLAIM: Modification of the process protected by patent 485 310 for the preparation of phenol from chlorobenzene, characterized in that one here halogen compounds of the benzene series are generally used in place of chlorobenzene.
DEI33869D 1928-03-20 1928-03-20 Process for the preparation of aromatic hydroxyl compounds Expired DE513798C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI33869D DE513798C (en) 1928-03-20 1928-03-20 Process for the preparation of aromatic hydroxyl compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI33869D DE513798C (en) 1928-03-20 1928-03-20 Process for the preparation of aromatic hydroxyl compounds

Publications (1)

Publication Number Publication Date
DE513798C true DE513798C (en) 1930-12-03

Family

ID=7188547

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI33869D Expired DE513798C (en) 1928-03-20 1928-03-20 Process for the preparation of aromatic hydroxyl compounds

Country Status (1)

Country Link
DE (1) DE513798C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1007333B (en) * 1951-12-28 1957-05-02 Ici Ltd Process for the production of o-cresol

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1007333B (en) * 1951-12-28 1957-05-02 Ici Ltd Process for the production of o-cresol

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