| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9ce023a6c13740cb05a67332f11a29f9 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C55-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-487
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-333 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-333
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C59-68
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C55-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B55-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-487 |
| filingDate |
1997-06-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6e07b86bd517bb5e379ca23d18c1ffdb
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_abfbc42fdba5b2058b72c953371c29ba
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a9756d7428313ee8c52f6ab35b3c0b84
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9f311df1fe137555421e3fc36ddf854b |
| publicationDate |
1999-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0925267-A1 |
| titleOfInvention |
Racemization process for optically active carboxylic acids or salts or esters thereof |
| abstract |
Optically active carboxylic acids, salts or esters, such as the profen-type compounds, are racemized in the presence by nitrogenous bases such as methylbenzyl-amine by heating an aqueous solution of such optically active compounds at a temperature of from 80 °C to 200 °C in the presence of a catalytically effective amount of an alkali metal hydroxide. The process not only enables conversion of inactive or undesirable enantiomers of compounds such as Naproxen or Ibuprofen into a usable, desirable enatiomers in an efficient and economical manner, but avoids conversion of the nitrogenous base into amide. Thus the deleterious consequences of amide formation are avoided. |
| priorityDate |
1996-06-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |