GB431105A - Manufacture of intermediate products - Google Patents
Manufacture of intermediate productsInfo
- Publication number
- GB431105A GB431105A GB29151/34A GB2915134A GB431105A GB 431105 A GB431105 A GB 431105A GB 29151/34 A GB29151/34 A GB 29151/34A GB 2915134 A GB2915134 A GB 2915134A GB 431105 A GB431105 A GB 431105A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pyrene
- acid
- sulphonation
- sulphonated
- nitrobenzene
- 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
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
- C07C303/02—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof
- C07C303/04—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof by substitution of hydrogen atoms by sulfo or halosulfonyl groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2603/00—Systems containing at least three condensed rings
- C07C2603/02—Ortho- or ortho- and peri-condensed systems
- C07C2603/40—Ortho- or ortho- and peri-condensed systems containing four condensed rings
- C07C2603/42—Ortho- or ortho- and peri-condensed systems containing four condensed rings containing only six-membered rings
- C07C2603/50—Pyrenes; Hydrogenated pyrenes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Indole Compounds (AREA)
Abstract
Pyrene is sulphonated in presence of a diluent such as nitrobenzene, with a compound containing the group <FORM:0431105/IV/1> obtainable by the action of halogen sulphonic acid on a tertiary base such as pyridine, quinoline, a dialkylaniline or a trialkylamine, the said sulphonating agent being either prepared in situ or used after isolation. The pyrene monosulphonic acid produced may be converted by alkaline fusion into an oxypyrene. The products are intermediates for dyes and pharmaceutical products. According to examples, pyrene is sulphonated with the product obtained by treating pyridine with chlorosulphonic acid in situ, or by treating quinoline, dimethylaniline, or trimethylamine with chlorosulphonic, and with or without nitrobenzene as diluent, the sulphonic acid obtained is extracted with alkali and isolated; it may be converted into a hydroxy compound by fusion with caustic potash. The Specification as open to inspection under Sect. 91 refers to the sulphonation of pyrene under mild conditions generally and contains a further example of the sulphonation with chlorsulphonic acid in carbontetrachloride. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH431105X | 1933-10-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB431105A true GB431105A (en) | 1935-07-01 |
Family
ID=4514950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB29151/34A Expired GB431105A (en) | 1933-10-17 | 1934-10-11 | Manufacture of intermediate products |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB431105A (en) |
-
1934
- 1934-10-11 GB GB29151/34A patent/GB431105A/en not_active Expired
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