http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-804312-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_67990dbfe6a86cc538b8fcfda8e541af |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-62 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C249-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C291-04 |
| filingDate | 1957-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1958-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-804312-A |
| titleOfInvention | Unsaturated diamine products and their preparation |
| abstract | Products corresponding to the addition of two amino radicals to a dimer of a conjugated diene are prepared by reacting said diene with free amino radicals generated in a system known to be capable of generating such radicals, the reaction being conducted in an aqueous reaction medium containing more than 1/3 parts and preferably 1 to 2 1/2 parts by volume of an organic solvent for the diene to one part of water. Preferred dienes are aliphatic dienes containing 4 to 8 carbon atoms, those specified being butadiene, isoprene, dimethyl butadiene, and pentadienes such as methyl-1:3-pentadienes. The organic solvent for the diene is preferably a mutual solvent for the diene and the aqueous components of the reaction mixture, such as butanol, tert.-butanol, ethanol, isopropanol, dioxane, 2-methoxy ethanol and acetic acid. The reaction medium is preferably acidic and is preferably maintained at a normality of at least 1.5 based on the normality of the acid in the water present in the final reaction mixture. The free amino radicals are preferably generated in situ by the addition of hydroxylamine or the nitrate or hydrochloride thereof and a metal salt that undergoes oxidation-reduction reaction with the hydroxylamine to form free amino radicals to the solution of the diene. The addition of the hydroxylamine and the metal salt is preferably conducted concurrently. Preferred oxidation-reduction salts are titanous chloride, vanadous chloride and stannous chloride. The diamine product may be obtained from the aqueous phase portion of the reaction product by treatment with alkali and extraction with a non-aqueous solvent such as diethyl ether. Alternatively the diamine may be isolated as the hydrochloride. In the examples butadiene is converted to octadienediamine-1 : 8, which is isolated both as such and as the hydrochloride; octadienediamine-1 : 8 is hydrogenated to the corresponding octanediamine-1 : 8, which is isolated as the hydrochloride; and isoprene is converted to dimethyloctadienediamine, which is isolated as the free base. |
| priorityDate | 1956-05-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 53.