http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4268446-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-66 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-72 |
| filingDate | 1980-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1981-05-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c905392a9958553aab799209f5d37237 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3dca0654b6161d2cb20a7a1bc1931f7d |
| publicationDate | 1981-05-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-4268446-A |
| titleOfInvention | Preparation of chromane derivatives |
| abstract | Chromane derivatives (I) ##STR1## where R 1 , R 2 and R 3 are H or C 1 -C 8 -alkyl, R 4 is H, C 1 -C 8 -alkyl or C 1 -C 8 -acyl and R 5 is C 1 -C 8 -alkyl are prepared by reacting a hydroquinone (II) ##STR2## with a Lewis acid or a Lewis acid derivative having the same action, and with a nitrile CH 2 ═CH--C(R 5 )(OR 6 )CN (III), where R 6 is H, C 1 -C 4 -acyl or C 1 -C 4 -alkyl, or with a compound from which III is formed in situ, in the presence of an inert solvent. |
| priorityDate | 1979-03-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 147.