| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5969f56ff5a9689c60bc67e201988eba
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e42866d6c3cedbae517fbec85cb1a88a |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-80 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-80 |
| filingDate |
1993-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a82ef21804050757a953560b91f13225
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8c8b1441e948e68996132b9785d3cfc5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f1075526389907ffe5045447841a79b1 |
| publicationDate |
1994-07-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2117609-A1 |
| titleOfInvention |
Process for the preparation of dibenzo[b,d]pyrans |
| abstract |
Dibenzo[b,d]pyrans are prepared by heating a dihydroxybenzoic acid derivative in the presence of a Lewis acid catalyst and an insert non-polar solvent in which the dihydroxybenzoic acid is soluble but in which the Lewis acid catalyst is insoluble or very slightly soluble. A typical embodiment involves the preparation of intermediates useful in the synthesis of dronabinol and related dibenzo[b,d]pyrans. |
| priorityDate |
1992-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |