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GB1239778A - Halogenation process - Google Patents

Halogenation process

Info

Publication number
GB1239778A
GB1239778A GB4702468A GB4702468A GB1239778A GB 1239778 A GB1239778 A GB 1239778A GB 4702468 A GB4702468 A GB 4702468A GB 4702468 A GB4702468 A GB 4702468A GB 1239778 A GB1239778 A GB 1239778A
Authority
GB
United Kingdom
Prior art keywords
monohydric alcohols
solution
inert organic
bromine
organic diluents
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
GB4702468A
Inventor
Alexander Mcnicoll
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB4702468A priority Critical patent/GB1239778A/en
Publication of GB1239778A publication Critical patent/GB1239778A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
    • C09B1/16—Amino-anthraquinones
    • C09B1/20—Preparation from starting materials already containing the anthracene nucleus
    • C09B1/26—Dyes with amino groups substituted by hydrocarbon radicals
    • C09B1/28—Dyes with amino groups substituted by hydrocarbon radicals substituted by alkyl, aralkyl or cyclo alkyl groups

Landscapes

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

Abstract

1,239,778. Halogenation process. IMPERIAL CHEMICAL INDUSTRIES Ltd. 24 Sept., 1969 [3 Oct., 1968], No. 47024/68. Heading C4P. Halogenated aromatic compounds are prepared by contacting a solution of bromine or chlorine in one or more monohydric alcohols with a water-insoluble aromatic compound containing at least three rings of which at least two are fused in a reaction medium consisting of one or more monohydric alcohols and one or more inert organic diluents other than monohydric alcohols. Preferred monohydric alcohols are methanol, ethanol and isopropanol and the inert organic diluents include halogeno- or nitro-benzene compounds,.e.g. nitrobenzene. Example 2 describes the bromination of 1- methylamino anthraquinone to give 4-bromo- 1-methylamino anthraquinone and Example 1 is comparative wherein the bromine used is not in solution in monohydric alcohol.
GB4702468A 1968-10-03 1968-10-03 Halogenation process Expired GB1239778A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4702468A GB1239778A (en) 1968-10-03 1968-10-03 Halogenation process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4702468A GB1239778A (en) 1968-10-03 1968-10-03 Halogenation process

Publications (1)

Publication Number Publication Date
GB1239778A true GB1239778A (en) 1971-07-21

Family

ID=10443431

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4702468A Expired GB1239778A (en) 1968-10-03 1968-10-03 Halogenation process

Country Status (1)

Country Link
GB (1) GB1239778A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4393007A (en) 1976-07-07 1983-07-12 Ciba-Geigy Ag Process for the manufacture of anthraquinone compounds
US5082957A (en) * 1988-12-14 1992-01-21 Basf Aktiengesellschaft Preparation of 1-amino-2-bromo-4-hydroxyanthraquinone
WO1992019586A1 (en) * 1991-05-02 1992-11-12 Eastman Kodak Company Process for the preparation of 1-amino-4-bromoanthraquinones

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4393007A (en) 1976-07-07 1983-07-12 Ciba-Geigy Ag Process for the manufacture of anthraquinone compounds
US4655970A (en) * 1976-07-07 1987-04-07 Ciba-Geigy Ag Process for the manufacture of anthraquinone compounds
US5082957A (en) * 1988-12-14 1992-01-21 Basf Aktiengesellschaft Preparation of 1-amino-2-bromo-4-hydroxyanthraquinone
WO1992019586A1 (en) * 1991-05-02 1992-11-12 Eastman Kodak Company Process for the preparation of 1-amino-4-bromoanthraquinones

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