GB725790A - Nitration process - Google Patents
Nitration processInfo
- Publication number
- GB725790A GB725790A GB32694/53A GB3269453A GB725790A GB 725790 A GB725790 A GB 725790A GB 32694/53 A GB32694/53 A GB 32694/53A GB 3269453 A GB3269453 A GB 3269453A GB 725790 A GB725790 A GB 725790A
- Authority
- GB
- United Kingdom
- Prior art keywords
- naphthylamine
- nitro
- mixture
- sulphate
- alpha
- 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
- C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
- C07C201/06—Preparation of nitro compounds
- C07C201/08—Preparation of nitro compounds by substitution of hydrogen atoms by nitro groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Alpha-naphthylamine is nitrated by adding a mixture of concentrated nitric acid and concentrated sulphuric acid to a solution of alpha-naphthylamine in concentrated sulphuric acid, maintaining the temperature of the reaction mixture between -10 DEG C. and -25 DEG C. while the reactants are being mixed together, and providing constant, vigorous agitation. To facilitate mixing the nitration mixture is added as a fine spray. The formation of tars and decomposition products is minimized by removing the nitro-naphthylamines from the nitrating agent promptly, and this is done by pouring the mixture on to crushed ice. The 5-nitro-1-naphthylamine sulphate is precipitated, and the 8-nitro-1-naphthylamine sulphate is recovered from the ice-water slurry. In the example yields of 60.5 per cent of 5-nitro-1-naphthylamine and 33.2 per cent of 8-nitro-1-naphthylamine are obtained.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US725790XA | 1953-06-24 | 1953-06-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB725790A true GB725790A (en) | 1955-03-09 |
Family
ID=22108514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32694/53A Expired GB725790A (en) | 1953-06-24 | 1953-11-25 | Nitration process |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB725790A (en) |
-
1953
- 1953-11-25 GB GB32694/53A patent/GB725790A/en not_active Expired
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