| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_648c9679dd9ec36125406a2dafa6bf7e |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-84
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-79
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-803
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K31-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-54 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-79
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-84
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-54 |
| filingDate |
2015-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2021-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6b7a4505e835928e0e2111d4a149ff41
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_97849213a63fd03184a3d9988cfd33f8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_092efcda1b26bcae7f290e7563d0a568
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1dee8804a0bcf9353dd6145e2a23f65c |
| publicationDate |
2021-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
TW-I720647-B |
| titleOfInvention |
Process for the preparation of 4-alkoxy-3-hydroxypicolinic acids |
| abstract |
4,6-Dibromo-3-hydroxypicolinonitrile may be prepared from furfural in a series of chemical steps selected from cyano-amination, amine salt formation and bromination-rearrangement. 4-Alkoxy-3-hydroxypicolinic acids may be conveniently prepared from 4,6-dibromo-3-hydroxypicolinonitrile in a series of chemical steps selected from bromo substitution, nitrile hydrolysis and halogen reduction. |
| priorityDate |
2014-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |