| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d54ead0fda2dcd431c488b579195aa31 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A01N43-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D405-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A01N37-34
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/C07D307-54 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-84
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-79
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-803 |
| filingDate |
2017-01-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2021-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_73ba99f40022d0816b7b56164e7edc3a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9ce42dbb2558c566408514e148e26664
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_871df289f3050bae7ab901ef69155b91
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_82617355687f4275bc22677f16554a0c |
| publicationDate |
2021-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
ES-2883118-T3 |
| titleOfInvention |
Procedure for the preparation of 4-alkoxy-3-hydroxypicolinic acids |
| abstract |
A process for the preparation of a compound of Formula A **(See Formula)** wherein R1 is C1-C3 alkyl; starting from a compound of Formula B **(See formula)** comprising the following steps: a) creating a first mixture containing an alkali metal alkoxide of Formula C MOR1 C where M is Na or K, and R1 is C1-C3 alkyl; and the compound of Formula B and heating the first mixture; b) create a second mixture by adding water, a strong base and metallic zinc to the first mixture; c) heating the second mixture; and d) isolating the compound of Formula A. |
| priorityDate |
2016-01-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |