http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-789303-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_42af7f462e066a7389578502656c5b24 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2601-14 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C251-44 |
| filingDate | 1955-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1958-01-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-789303-A |
| titleOfInvention | Improved process for the preparation of nitroso-cyclohexane |
| abstract | Nitroso-cyclohexane is made by treating cyclohexylhydroxylamine with an oxidizing agent in a reaction solution of pH not greater than 5.5. The nitroso-cyclohexane is obtained as its more stable bimolecular form, bisnitroso-cyclohexane. Oxidizing agents specified are ferric chloride, potassium permanganate and potassium bichromate in acidified aqueous solution, hydrogen peroxide and hypochlorous acid when salts of heavy metals such as copper sulphate may be present, or oxygen or air in the presence of catalysts and in organic solvents such as hydrocarbons or chlorinated hydrocarbons. The organic solutions are such that a pH not greater than 5.5 would be found on addition of water. Catalysts mentioned for use with oxygen or air are salts of iron, cobalt, nickel and manganese which are soluble in the solvent, such as naphthenates. In examples, nitrosocyclohexane is made by oxidizing cyclohexylhydroxylamine with (1) ferric chloride in water; (2) potassium permanganate in aqueous sulphuric acid; (3) calcium chloride bleach liquor in aqueous sulphuric acid; (4) air in the presence of cobalt naphthenate in chloroform solution; and (5) air in the presence of manganese naphthenate in benzene solution. The nitrosocyclohexane may be isomerized to give cyclohexanone oxime by the action of heat in the presence or absence of solvents. Solvents specified are pyridine and n-butanol. Further examples illustrate the isomerization (6) in pyridine; and (7) in absence of a solvent. |
| priorityDate | 1954-05-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 55.