http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4454318-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-584 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D237-22 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D237-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D237-14 |
| filingDate | 1980-10-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1984-06-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e442a394aef630f6b3c3bb41737d2397 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_00e9a35874cd63c05d4e09381c7e6e6f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_124644bcdef6d32f6188b65979be7504 |
| publicationDate | 1984-06-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-4454318-A |
| titleOfInvention | Method for producing 4-chloro-5-amino-2-phenyl-3(2H)-pyridazinone from 4,5-dichloro-2-phenyl-3(2H)-pyridazione and ammonia |
| abstract | PCT No. PCT/DK80/00062 Sec. 371 Date Apr. 16, 1981 Sec. 102(e) Date Apr. 16, 1981 PCT Filed Oct. 17, 1980 PCT Pub. No. WO81/01288 PCT Pub. Date May 14, 1981.4-Chloro-5-amino-2-phenyl-3(2H)-pyridazinone is prepared from 4,5-dichloro-2-phenyl-3(2H)-pyridazinone and ammonia in high yield and substantially free from 4-amino-5-chloro-2-phenyl-3(2 H)-pyridazinone in a method comprising reacting 4,5-dichloro-2-phenyl-3(2H)-pyridazinone with aqueous ammonia in the presence of a catalyst which is capable of selectively exchanging the 5-chlorine atom in 4,5-dichloro-2-phenyl-3(2H)-pyridazinone with a leaving group of such a nature that the resulting intermediate compound is capable of alkylating ammonia to 4-chloro-5-amino-2-phenyl-3(2H)-pyridazinone in high yield in the reaction medium, thereby regenerating the catalyst. The end product is isolated by filtration after the reaction and washed with water, and the mother liquor plus the wash water are used as reaction medium for the next batch. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6538135-B1 |
| priorityDate | 1979-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 63.