http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S5490180-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5128cfc84a0fb189fceb3cd240c44493 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-22 |
| filingDate | 1977-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4fd941e393814037a9592525746356a0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_95631654c7fcf1deb8126cfd1645a37c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_46024778a538b6c9b1bca10bab033b7f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2726a3cd4c2f6781a1901dd04661b3ac |
| publicationDate | 1979-07-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S5490180-A |
| titleOfInvention | Purification and recovery of n,n'-disubstituted bipyridium |
| abstract | PURPOSE: To recover the title substance useful as herbicides with a specific ion exchange resin in a high purity from an oxidation reaction mixture obtained by treating a N,N'-disubstituted tetrahydro 4,4'-bipyridyl with an aromatic nitro compound in the presence of water. n CONSTITUTION: A N,N'-disubstituted tetrahydro 4,4'-bipyridyl, preferably N,N'- dialkyltetrahydro-4,4'-bipyridyl, e.g. N,N'-dimethylterahydro 4,4'-bipyridyl, is treated with an aromatic nitro compound, e.g. nitrobenzene or nitrotoluene, in the presence of water to give the corresponding N,N'-disubstituted 4,4'-bipryridium. The resulting aqueous solution containing the N,N'-disubstituted bipyridium is brought into contact with a weakly acidic cationic exchange resin, preperably having carboxyl groups, adsorbed and recovered by a mineral acid to give the title substance. n COPYRIGHT: (C)1979,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108218766-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105348175-A |
| priorityDate | 1977-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 36.