http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2082003-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_134178b41053f4848d1e70c9fea378d6 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C50-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C46-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-70 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-70 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C50-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C46-08 |
| filingDate | 1992-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5eb102a78ce4123d8ca4238e4067dc6e |
| publicationDate | 1993-05-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2082003-A1 |
| titleOfInvention | Process for the preparation of substituted pentaalkylchromenes |
| abstract | ABSTRACT OF THE DISCLOSURE A novel process is disclosed for the preparation of pentaalkylchromenes of the general formula: (I) wherein each R denotes a lower alkyl group having from 1 to 4 C atoms and R1 denotes a phenyl group which is unsubstituted or substituted by a lower alkyl group having from 1 to 4 C atoms, by halogen or by a nitro group, or an alkanoyl group having from 1 to 4 C atoms. In the process, a trialkylhydroquinone is reacted with a halogenated butenol to give a substituted tetraalkylhydroquinone, which is oxidised and then the halogen atom is substituted with a suitable nucleophile. The resulting compound is finally cyclised to give the final product of formula I. The pentaalkylchromenes I are suitable intermediates for the preparation of hypolipidaemic pharmaceuticals. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-1062549-C |
| priorityDate | 1991-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 67.