GB369674A - Improvements in and relating to the production of the disulphuric acid ester of 2-amino-anthrahydroquinone - Google Patents
Improvements in and relating to the production of the disulphuric acid ester of 2-amino-anthrahydroquinoneInfo
- Publication number
- GB369674A GB369674A GB3934830A GB3934830A GB369674A GB 369674 A GB369674 A GB 369674A GB 3934830 A GB3934830 A GB 3934830A GB 3934830 A GB3934830 A GB 3934830A GB 369674 A GB369674 A GB 369674A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid ester
- anthrahydroquinone
- relating
- amino
- production
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
In the process for making the disulphuric acid ester of 2-aminoanthrahydroquinone or its salts by treating a 2-acylaminoathraquinone with pyridine-sulphur trioxide in the presence of a metal and a tertiary base, followed by hydrolysis to remove the acyl groups and, if desired, by conversion of the products into sodium or like salts, the treatment with pyridine-sulphur trioxide, metal and tertiary base is effected at a temperature of about 80 DEG C. for about three hours. An example is given, 2-acetylaminoanthraquinone being used as parent material. Specification 312,243, [Class 2 (iii), Dyes &c.], is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3934830A GB369674A (en) | 1930-12-31 | 1930-12-31 | Improvements in and relating to the production of the disulphuric acid ester of 2-amino-anthrahydroquinone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3934830A GB369674A (en) | 1930-12-31 | 1930-12-31 | Improvements in and relating to the production of the disulphuric acid ester of 2-amino-anthrahydroquinone |
Publications (1)
Publication Number | Publication Date |
---|---|
GB369674A true GB369674A (en) | 1932-03-31 |
Family
ID=10409067
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3934830A Expired GB369674A (en) | 1930-12-31 | 1930-12-31 | Improvements in and relating to the production of the disulphuric acid ester of 2-amino-anthrahydroquinone |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB369674A (en) |
-
1930
- 1930-12-31 GB GB3934830A patent/GB369674A/en not_active Expired
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