GB726429A - Dianthrone ethylene derivatives containing bromine and process of making same - Google Patents
Dianthrone ethylene derivatives containing bromine and process of making sameInfo
- Publication number
- GB726429A GB726429A GB1279/53A GB127953A GB726429A GB 726429 A GB726429 A GB 726429A GB 1279/53 A GB1279/53 A GB 1279/53A GB 127953 A GB127953 A GB 127953A GB 726429 A GB726429 A GB 726429A
- Authority
- GB
- United Kingdom
- Prior art keywords
- products
- acid
- dianthrone
- condensing agents
- anthrones
- 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
- C09B3/00—Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Blue products are obtained by brominating in chlorsulphonic acid, alone or mixed with sulphuric acid, products, stated to be dianthrone ethylenes, obtained according to Specification 299,972, [Class 2 (iii)], by acting with alkaline condensing agents on the reaction products of anthrones and glyoxal. Halogen carriers, e.g. iodine or sulphur halide, may be used. By treatment with acid condensing agents, e.g. sulphuric acid or aluminium chloride, or simply by heating in high-boiling solvents such as nitrobenzene, acedianthrones may be obtained. Examples describe the application of the process to the products obtained from anthrone-, 2-chloranthrone, 2.6-dichloranthrone, or 2-methylanthrone.ALSO:Blue products are obtained by brominating in chlorsulphonic acid, alone or mixed with sulphuric acid, products stated to be dianthrone ethylenes, obtained according to Specification 299,972, [Class 2 (iii)], by acting with alkaline condensing agents on the reaction products of anthrones and glyoxal. Halogen carriers, e.g. iodine or sulphur halide, may be used. By treatment with acid condensing agents, e.g. sulphuric acid or aluminium chloride, or simply by heating in high-boiling solvents such as nitrobenzene acid anthrones may be obtained. Examples describe the application of the process to the products obtained from anthrone, 2-chloroanthrone, 2,6-dichloroanthrone, or 2-methylanthrone.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE726429X | 1952-01-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB726429A true GB726429A (en) | 1955-03-16 |
Family
ID=6635215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1279/53A Expired GB726429A (en) | 1952-01-16 | 1953-01-15 | Dianthrone ethylene derivatives containing bromine and process of making same |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB726429A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4205005A (en) * | 1977-08-11 | 1980-05-27 | Minnesota Mining And Manufacturing Company | Anthraquino-cycloalkane dyes |
-
1953
- 1953-01-15 GB GB1279/53A patent/GB726429A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4205005A (en) * | 1977-08-11 | 1980-05-27 | Minnesota Mining And Manufacturing Company | Anthraquino-cycloalkane dyes |
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