| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-5456
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-80 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-79
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D409-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-54 |
| filingDate |
1980-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_23b3a4dbb2c22ce4a4dc4180e3b53716 |
| publicationDate |
1981-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0026343-A1 |
| titleOfInvention |
Process for preparing bis-benzofuran compounds |
| abstract |
Process for the preparation of optical brighteners from the series of bis-benzofuranyl compounds by cyclization of compounds of the formula in aprotic solvents and in the presence of alkali and alkaline earth carbonates. |
| priorityDate |
1979-09-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |