GB763390A - Manufacture of 3; 5; 8; 10-tetrabromopyrene - Google Patents

Manufacture of 3; 5; 8; 10-tetrabromopyrene

Info

Publication number
GB763390A
GB763390A GB20499/54A GB2049954A GB763390A GB 763390 A GB763390 A GB 763390A GB 20499/54 A GB20499/54 A GB 20499/54A GB 2049954 A GB2049954 A GB 2049954A GB 763390 A GB763390 A GB 763390A
Authority
GB
United Kingdom
Prior art keywords
bromine
suspension
sodium
tetrabromopyrene
added
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
GB20499/54A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst 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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB763390A publication Critical patent/GB763390A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
    • C07C17/10—Preparation of halogenated hydrocarbons by replacement by halogens of hydrogen atoms
    • C07C17/12—Preparation of halogenated hydrocarbons by replacement by halogens of hydrogen atoms in the ring of aromatic compounds

Abstract

A process for the manufacture of 3 : 5 : 8 : 10-tetrabromopyrene comprises reacting pyrene in a finely dispersed state in aqueous suspension with an excess of bromine. The pyrene may be dispersed by grinding with water in a mill, with a wetting or dispersing agent, if desired, such as sodium dibutyl-naphthalene sulphonate. Bromine is added to the suspension as such, or dissolved in a solution of sodium or potassium bromide. A solution promoter, such as nitrobenzene, trichlorobenzene or carbon tetrachloride, may be added to the suspension. The reaction temperature may be 70 DEG to 90 DEG C. Bromine may be recovered from the hydrogen bromide formed by means of chlorine or sodium chlorate and sulphuric acid. Examples of the process are given.
GB20499/54A 1953-07-14 1954-07-13 Manufacture of 3; 5; 8; 10-tetrabromopyrene Expired GB763390A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE763390X 1953-07-14

Publications (1)

Publication Number Publication Date
GB763390A true GB763390A (en) 1956-12-12

Family

ID=6670731

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20499/54A Expired GB763390A (en) 1953-07-14 1954-07-13 Manufacture of 3; 5; 8; 10-tetrabromopyrene

Country Status (2)

Country Link
FR (1) FR1104648A (en)
GB (1) GB763390A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2937209A (en) * 1957-06-26 1960-05-17 Gen Aniline & Film Corp Halogenation of pyrene

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2937209A (en) * 1957-06-26 1960-05-17 Gen Aniline & Film Corp Halogenation of pyrene

Also Published As

Publication number Publication date
FR1104648A (en) 1955-11-22

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