http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5041605-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5d9f3ca41550d315642580237250c5b0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C275-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C7-346 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C275-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B53-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C7-34 |
| filingDate | 1989-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1991-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3ff592b376175012db27f40566f008f3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_43f3d8016ffc0ff24387856763fd148f |
| publicationDate | 1991-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-5041605-A |
| titleOfInvention | Method of synthesizing phenolic cyan-dye-forming photographic couplers |
| abstract | Phenolic cyan-dye-forming couplers characterized by a p-cyanophenylureido group in the 2-position of the phenol are synthesized in high yield by a process comprising the steps of contacting, in a reaction solvent in the presence of a transition metal catalyst at moderate temperature and atmospheric pressure, a coupler intermediate having a nitro group in the 5-position with a hydrogen donor, such as, for example, ammonium formate, to thereby form the corresponding 2-(p-cyanophenylureido)-5-aminophenol and reacting the 2-(p-cyanophenylureido)-5-aminophenol with an acylating agent to form the phenolic cyan-dye-forming coupler. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11529819-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6509500-B2 |
| priorityDate | 1989-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 45.