GB416245A - Manufacture of 1:4-diaminoanthraquinones - Google Patents
Manufacture of 1:4-diaminoanthraquinonesInfo
- Publication number
- GB416245A GB416245A GB1683/34A GB168334A GB416245A GB 416245 A GB416245 A GB 416245A GB 1683/34 A GB1683/34 A GB 1683/34A GB 168334 A GB168334 A GB 168334A GB 416245 A GB416245 A GB 416245A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaminoanthraquinone
- substituted
- amino
- diamino
- dihydro
- 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
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
- C09B1/22—Dyes with unsubstituted amino groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1 : 4-Diaminoanthraquinones are obtained by causing a 9 : 10-anthraquinone-1 : 4-quinone, diimine, or imino-quinone which may be substituted in the non-quinonoid nucleus by halogen, hydroxyl, amino, alkyl, alkylamino, arylamino, alkoxy-, or sulphonic groups, to react in or without a solvent, with a 2 : 3-dihydro-1 : 4-diaminoanthraquinone which may be further substituted by halogen, hydroxyl, amino, alkylamino, arylamino, alkoxy, nitro or sulphonic groups. The product, according to the components selected, is an individual 1 : 4-diaminoanthraquinone or a mixture of a 1 : 4-diaminoanthraquinone with a 1 : 4-dioxy-, 1 : 4-amino-oxy, or another 1 : 4-diaminoanthraquinone, mutual oxidation and reduction having taken place between the two reactants. According to examples, dihydro-1 : 4-diaminoanthraquinone reacts in sulphuric acid solution at 90 DEG C. with 9 : 10-anthraquinone, 1 : 4-quinoneimine and 1 : 4-diiminoanthraquinone to give a mixture of 1 : 4-diaminoanthraquinone and 1 : 4-diamino-oxyanthraquinone, and pure 1 : 4-diaminoanthraquinone respectively. 2 : 3 - Dihydro - 1 : 4 - diaminoanthraquinones substituted by the above-mentioned groups are obtained by treating the corresponding 1 : 4-dioxyanthraquinones with aqueous ammonia under pressure, or by reducing the corresponding 1 : 4-diamino-2-sulphonic acid at high temperatures with alkali and alkali hydrosulphite. 1 : 4 : 9 : 10-Anthradiquinones substituted or not as described above are obtained by oxidizing the corresponding 1 : 4-dioxyanthraquinones with manganese dioxide and sulphuric acid. 1 : 4-Diiminoanthraquinones and 1 : 4-quinoneiminoanthraquinones substituted or not are obtained by oxidizing the corresponding 1 : 4-diamino and 1 : 4-amino-oxyanthraquinones with manganese dioxide and sulphuric acid.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH416245X | 1933-01-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB416245A true GB416245A (en) | 1934-09-13 |
Family
ID=4514584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1683/34A Expired GB416245A (en) | 1933-01-18 | 1934-01-17 | Manufacture of 1:4-diaminoanthraquinones |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR766858A (en) |
| GB (1) | GB416245A (en) |
-
1934
- 1934-01-11 FR FR766858D patent/FR766858A/en not_active Expired
- 1934-01-17 GB GB1683/34A patent/GB416245A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR766858A (en) | 1934-07-05 |
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