http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0487687-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5d9f3ca41550d315642580237250c5b0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D405-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D487-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D319-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-346 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D405-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D487-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D249-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D319-06 |
| filingDate | 1991-06-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_566671e5d3462437d1d7ec41829535cf http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1a97914c512c9ef593800ee05f84505d |
| publicationDate | 1992-06-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0487687-A1 |
| titleOfInvention | Process and intermediates for the preparation of tetraazaindenes useful in photography |
| abstract | Multi-step process for the preparation of tetraazaindenes, intermediate compounds and processes for the formation of said intermediate compounds. For example, Meldrum's acid is reacted with triethylorthoacetate in the presence of pyridine and ethyl acetate to form a first intermediate represented by the structural formula (1) which is then reacted with 3- amino-methylthio-1,2,4, -triazole to form a second intermediate represented by the structural formula (2). By putting this intermediate dermis in contact with sodium carbonate, a tetraazaindene of formula (3) is obtained. Tetraazaindenes are chemicals useful in photography, for example, as organic image dyes or as stabilizers in photographic emulsions. |
| priorityDate | 1990-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 89.