GB1377589A - Process for preparing dinitroanthraquinones - Google Patents

Process for preparing dinitroanthraquinones

Info

Publication number
GB1377589A
GB1377589A GB3133674A GB3133674A GB1377589A GB 1377589 A GB1377589 A GB 1377589A GB 3133674 A GB3133674 A GB 3133674A GB 3133674 A GB3133674 A GB 3133674A GB 1377589 A GB1377589 A GB 1377589A
Authority
GB
United Kingdom
Prior art keywords
dinitroanthraquinones
isomer
preparing
oct
precipitate
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
GB3133674A
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.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co 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 Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Publication of GB1377589A publication Critical patent/GB1377589A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C46/00—Preparation of quinones

Landscapes

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

Abstract

1377589 Separation of 1,5- and 1,8-dinitroanthraquinones SUMITOMO CHEMICAL CO Ltd 6 Oct 1972 [29 Oct 1971] 31336/74 Divided out of 1377588 Heading C2C 1,5- and 1,8-Dinitroanthraquinones are separated from their mixtures by dissolving the mixture in a solvent comprising at least one of nitrobenzene, o-, m- and p-nitrotoluene by heating to 170-230‹ C., cooling the solution to 100-160‹ C. to precipitate the 1,5-isomer and separating said isomer by hot filtration, cooling the filtrate to 10-70‹ C. to precipitate the 1,8- isomer which is also isolated by filtration, the volume ratio of solvent to anthraquinone mixture being 2-10 to 1.
GB3133674A 1971-10-29 1972-10-06 Process for preparing dinitroanthraquinones Expired GB1377589A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46086644A JPS511709B2 (en) 1971-10-29 1971-10-29

Publications (1)

Publication Number Publication Date
GB1377589A true GB1377589A (en) 1974-12-18

Family

ID=13892721

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3133674A Expired GB1377589A (en) 1971-10-29 1972-10-06 Process for preparing dinitroanthraquinones

Country Status (2)

Country Link
JP (1) JPS511709B2 (en)
GB (1) GB1377589A (en)

Also Published As

Publication number Publication date
JPS4852755A (en) 1973-07-24
JPS511709B2 (en) 1976-01-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee