GB219276A - Manufacture of a thionaphthisatin and its intermediate products - Google Patents
Manufacture of a thionaphthisatin and its intermediate productsInfo
- Publication number
- GB219276A GB219276A GB3548/24A GB354824A GB219276A GB 219276 A GB219276 A GB 219276A GB 3548/24 A GB3548/24 A GB 3548/24A GB 354824 A GB354824 A GB 354824A GB 219276 A GB219276 A GB 219276A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thionaphthisatin
- naphthioindoxyl
- manufacture
- intermediate products
- anil
- 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
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/50—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
- C07D333/74—Naphthothiophenes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
Abstract
2 : 3-Thionaphthisatin-a -derivatives and 2 : 3-thionaphthisatin are obtained by processes similar to those described in the parent Specification for 2 : 1-thionaphthisatin, namely, by replacing the methylene hydrogen atoms of 2 : 3-naphthioindoxyl by an easily removable radicle such as an arylimide group, or by halogen, and then saponifying, for instance, by means of an organic or inorganic acid. In an example, 2 : 3-naphthioindoxyl is condensed with p-nitroso-dimethylaniline and the 2 : 3-thionaphthisatin-a -(41-dimethylamino)-anil hydrolysed with sulphuric acid of 60 per cent strength.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH219276X | 1923-07-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB219276A true GB219276A (en) | 1924-11-06 |
Family
ID=4451094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3548/24A Expired GB219276A (en) | 1923-07-18 | 1924-02-11 | Manufacture of a thionaphthisatin and its intermediate products |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB219276A (en) |
-
1924
- 1924-02-11 GB GB3548/24A patent/GB219276A/en not_active Expired
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