GB507065A - Manufacture of compounds of the anthraquinone series - Google Patents

Manufacture of compounds of the anthraquinone series

Info

Publication number
GB507065A
GB507065A GB3382137A GB3382137A GB507065A GB 507065 A GB507065 A GB 507065A GB 3382137 A GB3382137 A GB 3382137A GB 3382137 A GB3382137 A GB 3382137A GB 507065 A GB507065 A GB 507065A
Authority
GB
United Kingdom
Prior art keywords
anthraquinone
leuco
sulphuric acid
ammonia
nitrobenzene
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
GB3382137A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB3382137A priority Critical patent/GB507065A/en
Publication of GB507065A publication Critical patent/GB507065A/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
    • C09B1/50—Amino-hydroxy-anthraquinones; Ethers and esters thereof

Abstract

507,065. Anthraquinone derivatives. OLPIN, H. C. Dec. 7, 1937, No. 33821. [Class 2 (iii)] A leuco -1-amino-4-hydroxyanthraquinone is made by acting with ammonia on a leuco-1.4- dihydroxy - anthraquinone free from amino groups, and discontinuing the reaction before any substantial proportion of the corresponding 1.4-diamino-anthraquinone has been produced. Further substituents may be hydroxy, alkoxy, sulpho- or halogen. Advantageously the ammonia is employed in excess at below 40‹ C. The reaction may be effected in presence of water or an organic liquid such as ethyl alcohol or other aliphatic alcohol. The leuco body first obtained may be oxidized by free oxygen in presence of pyridine or piperidine, with sulphuric acid with or without nitrobenzene, or with substantially anhydrous sulphuric acid according to Specification. 501,341. In an example, leucoquinizarin is treated with aqueous-alcoholic ammonia, followed by oxidation with 96 per cent sulphuric acid, with or without nitrobenzene.
GB3382137A 1937-12-07 1937-12-07 Manufacture of compounds of the anthraquinone series Expired GB507065A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3382137A GB507065A (en) 1937-12-07 1937-12-07 Manufacture of compounds of the anthraquinone series

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3382137A GB507065A (en) 1937-12-07 1937-12-07 Manufacture of compounds of the anthraquinone series

Publications (1)

Publication Number Publication Date
GB507065A true GB507065A (en) 1939-06-07

Family

ID=10357887

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3382137A Expired GB507065A (en) 1937-12-07 1937-12-07 Manufacture of compounds of the anthraquinone series

Country Status (1)

Country Link
GB (1) GB507065A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0496113A1 (en) * 1991-01-23 1992-07-29 BASF Aktiengesellschaft Process for the preparation of 1-amino-2-chloro-4-hydroxy-anthraquinone

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0496113A1 (en) * 1991-01-23 1992-07-29 BASF Aktiengesellschaft Process for the preparation of 1-amino-2-chloro-4-hydroxy-anthraquinone
US5180841A (en) * 1991-01-23 1993-01-19 Basf Aktiengesellschaft Preparation of 1-amino-2-chloro-4-hydroxyanthraquinone

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