http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0818451-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1670251ce05a9866e2c77b7ca52f2324 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-83 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-83 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-10 |
| filingDate | 1997-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2001-06-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_25ba32eec0ba7172dac0b9ea462587c7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2bab48cc167d56b6b853eaaf77a36c59 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f57969602cc7b2f8ff55b46cd08bd512 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8ae2caf7293bf0a8469f00f23a693a4c |
| publicationDate | 2001-06-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0818451-B1 |
| titleOfInvention | Process for the preparation of the enollactone of the 2-oxocyclohexylidene acetic acid and use for the preparation of the 2-coumaranone |
| abstract | Preparation of 2-oxo cyclohexylidene acetic acid enol-lactone (I) comprises: (i) reacting glyoxylic acid with cyclohexanone in the presence of a halogenated acid to give a crude reaction product; and (ii) dissolving the above product in an organic solvent in the presence of a strong soluble acid or a strongly acidic resin. In (i), the acid is preferably HCl added in a 1-100% molar amount w.r.t. glyoxylic acid and the reagents are heated above 50 degrees C. The resulting crude product is dissolved in a solvent containing a benzene ring and treated with methane sulphonic acid or p-toluene sulphonic acid or with a strongly acidic sulphonic Amberlist (RTM) resin. |
| priorityDate | 1996-07-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 54.