http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5646297-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_99556a26c280653ede266e81089d53bf |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C7-30529 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D231-52 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C7-305 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B57-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C7-384 |
| filingDate | 1996-08-01^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1997-07-08^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1bdc77e11230818fad06df025bb1ad18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c375131d43713e2fad3cb251f829c197 |
| publicationDate | 1997-07-08^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-5646297-A |
| titleOfInvention | Process for preparation of 2-equivalent 4-arylthio-5-pyrazolone magenta couplers |
| abstract | A process for preparation of 2-equivalent 4-arylthio-5-pyrazolone magenta couplers comprises the steps of: n (i) reacting a 4-equivalent 5-pyrazolone magenta coupler and a diaryldisulfide compound in the presence of 1,8-diazabicyclo-[5,4,0]-undecen-7-ene and an organic solvent to obtain a reaction product between 4-arylthio-5-pyrazolone magenta coupler and 1,8-diazabicyclo-[5,4,0]-undecen-7-ene, and n (ii) converting the reaction product with an inorganic acid into the 4-arylthio-5-pyrazolone magenta coupler. n The reaction product between the 4-arylthio-5-pyrazolone magenta coupler and the 1,8-diazabicyclo-[5,4,0]-undecen-7-ene is easily formed in high yield and purity. This reaction product, which is insoluble in the reaction solvent, can be easily isolated from the reaction mixture and converted by acidification into the 2-equivalent 4-arylthio-5-pyrazolone magenta coupler in high yield and purity. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7678902-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007225494-A1 |
| priorityDate | 1995-09-18^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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