http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-716239-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_73ee0bacab5a7576a6a3244747f6ea99 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C211-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C211-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-36 |
| filingDate | 1951-01-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c5442e4d11f971a342eca1ba33dbf4d9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2f9208530f48b3ad382997512519b009 |
| publicationDate | 1954-09-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-716239-A |
| titleOfInvention | Improvements in and relating to the production of amines |
| abstract | The invention comprises a process for the preparation of N-alkylated aromatic amines by reaction of an aromatic amino-, nitro- or nitroamino-compound with a di-alkyl ketone containing at least four carbon atoms, and hydrogen, characterized in that there is recycled to the feed an aqueous distillation cut from the final product comprising the water/ketone azeotrope. The reductive alkylation is conducted at elevated temperature and preferably under pressure using a hydrogenation catalyst, and is particularly applicable for preparing N : N1-di-alkyl phenylene diamines. In examples: (1) p-nitraniline is dissolved in methyl ethyl ketone/water azeotrope, water layer separated and other layer pressure hydrogenated using palladium catalyst to yield N : N1-di-sec.-butyl-p-phenylene diamine; (2) the organic layer as in (1) is treated with recycled material and passed with hydrogen over copper chromite under pressure. The product upon distillation yields N : N1 - di - sec. - butyl p - phenylene diamine. m-Dinitrobenzene and p-phenylenediamine are also specified as starting materials. Specifications 621,749 and 712,100 are referred to. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3014967-A |
| priorityDate | 1951-01-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.