GB333568A - Improvements in the manufacture and production of derivatives of benzanthrone - Google Patents
Improvements in the manufacture and production of derivatives of benzanthroneInfo
- Publication number
- GB333568A GB333568A GB512729A GB512729A GB333568A GB 333568 A GB333568 A GB 333568A GB 512729 A GB512729 A GB 512729A GB 512729 A GB512729 A GB 512729A GB 333568 A GB333568 A GB 333568A
- Authority
- GB
- United Kingdom
- Prior art keywords
- benzanthrone
- derivatives
- methoxybenzanthrone
- chlor
- nitro
- 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
- C09B3/02—Benzathrones
- C09B3/06—Preparation from starting materials already containing the benzanthrone nucleus
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Indole Compounds (AREA)
Abstract
333,568. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Feb. 15, 1929. Benzanthrone derivatives are obtained by introducing halogen, nitro and hydroxy substituents according to known methods into benzanthrone- Bz-1-alkyl ethers having the Bz-2-position free, whereby the said substituents enter the Bz-2-position. According to examples, Bz-1-methoxybenzanthrone, 6-chlor- and 8-chlor-Bz1-methoxybenzanthrones and 6-nitro-Bz1-methoxybenzanthrone are nitrated in nitrobenzene to give the corresponding Bz-2-nitro derivatives; Bz-1-methoxybenzanthrone is brominated and chlorinated in glacial acetic acid, and Bz1-ethoxy benzanthrone is chlorinated in glacial acetic acid, to give the corresponding Bz-2-halogen derivatives; and Bz-1- methoxybenzanthrone is oxidized with manganese dioxide in concentrated sulphuric acid, to give Bz1 : Bz2-dihydroxybenzanthrone which may be methylated to Bz2 : Bz2<1>-dimethoxybenzanthrone. The Bz1-methoxy benzanthrone, and its 6-chlor, 8-chlor- and 6-nitro derivatives are obtained according to Specification 291,131 and the Bz-1- ethoxy derivative is obtained by treating the Bz-1-hydroxy compound with p-toluenesulphonic acid ethyl ester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB512729A GB333568A (en) | 1929-02-15 | 1929-02-15 | Improvements in the manufacture and production of derivatives of benzanthrone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB512729A GB333568A (en) | 1929-02-15 | 1929-02-15 | Improvements in the manufacture and production of derivatives of benzanthrone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB333568A true GB333568A (en) | 1930-08-15 |
Family
ID=9790210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB512729A Expired GB333568A (en) | 1929-02-15 | 1929-02-15 | Improvements in the manufacture and production of derivatives of benzanthrone |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB333568A (en) |
-
1929
- 1929-02-15 GB GB512729A patent/GB333568A/en not_active Expired
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