http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-413751-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a717ea5b2ac78ac329ab3a9659d834d2 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-91 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-91 |
| filingDate | 1973-04-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1976-01-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | ES-413751-A1 |
| titleOfInvention | A PROCEDURE FOR THE PURIFICATION OF GAMMAOXO-2-DIBENZOFURANBUTIRICO ACID. |
| abstract | A process for the separation of gamma -oxo-2-dibenzofuranbutyric acid from a mixture of said acid and gamma -oxo-3-dibenzofuranbutyric acid is disclosed. Such a mixture is obtained by the prior art method of preparing gamma -oxo-2-dibenzofuranbutyric acid from dibenzofuran and succinic anhydride in a Friedel-Crafts reaction. The mixture of acids is converted to a mixture of their corresponding lower alkyl esters which is separated by recrystallization or chromatography into its component alkyl esters. Hydrolysis of the lower alkyl ester of gamma -oxo-2-dibenzofuranbutyric acid gives the desired corresponding acid. |
| priorityDate | 1972-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 18.