| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8c646f75c4f7c6349f35c8fe01934921 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-412
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-343
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-02 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K31-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C53-126
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-09
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-343
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-41 |
| filingDate |
1997-10-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2007-01-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_84d5301e515db5761f6088745f382367
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cb7ef91efe5bb6cb54ccb2c69404691c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_91b4324338aded35fd206faf1be9e102
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_93da2c906c1ed3bbee507b1592a63711 |
| publicationDate |
2007-01-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2217836-C |
| titleOfInvention |
Improved process for producing valproic acid |
| abstract |
An improved process for producing valproic acid from ethyl acetoacetate is disclosed wherein both the dialkylation of ethylacetoacetate with propyl bromide and the conversion of the dialkylester thus obtained to the corresponding salt take place in a single step, in the presence of a phase-transfer catalyst, in a hydroalcoholic environment, and the salt is converted to valproic acid at pH 1-3. |
| priorityDate |
1996-10-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |