GB771567A - Improvements in or relating to manufacture of substituted o-nitro amino compounds - Google Patents
Improvements in or relating to manufacture of substituted o-nitro amino compoundsInfo
- Publication number
- GB771567A GB771567A GB1271054A GB1271054A GB771567A GB 771567 A GB771567 A GB 771567A GB 1271054 A GB1271054 A GB 1271054A GB 1271054 A GB1271054 A GB 1271054A GB 771567 A GB771567 A GB 771567A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nitro
- substituted
- salt
- potassium
- anisidine
- 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
A process of preparing a substituted o-nitro-amino compound comprises converting the corresponding substituted amine to the alkali metal salt of the N-nitro derivative and effecting the rearrangement of the salt in an acid medium to form the o-nitro-amino compound. The substituted amine may be nitrated in a potassium ethoxide solution, e.g. containing ethanol and diethyl ether, using an alkyl nitrate. The potassium salt of the N-nitro derivative is allowed to separate out and is then added portionwise to dilute aqueous sulphuric acid. In examples: 3-nitro-o-anisidine is obtained by treating o-anisidine with a mixture of potassium ethoxide ethanol, diethyl ether and amyl nitrate, adding the potassium salt of o-anisylnitramine which separates to aqueous sulphuric acid and neutralizing the reaction mixture, after dilution, with ammonia (1); and 4-chloro-2-nitro aniline is similarly obtained using p-chloraniline as starting material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1271054A GB771567A (en) | 1954-05-01 | 1954-05-01 | Improvements in or relating to manufacture of substituted o-nitro amino compounds |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1271054A GB771567A (en) | 1954-05-01 | 1954-05-01 | Improvements in or relating to manufacture of substituted o-nitro amino compounds |
Publications (1)
Publication Number | Publication Date |
---|---|
GB771567A true GB771567A (en) | 1957-04-03 |
Family
ID=10009697
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1271054A Expired GB771567A (en) | 1954-05-01 | 1954-05-01 | Improvements in or relating to manufacture of substituted o-nitro amino compounds |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB771567A (en) |
-
1954
- 1954-05-01 GB GB1271054A patent/GB771567A/en not_active Expired
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