http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6114548-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_83762686ea3a4939e304b50c42a9f151 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D309-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D309-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D309-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D309-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
| filingDate | 1998-01-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2000-09-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ba89b69f601bf7b9307e44b9fd5a650c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3c82e5b74c766fd9cf12564e355de701 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_feef19d2ef5acc212183337c541b1a74 |
| publicationDate | 2000-09-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-6114548-A |
| titleOfInvention | Diels-alder reaction of aldehydes with simple dienes |
| abstract | The invention concerns Diels-Alder reactions between non-activated aldehydes RCHO in which R is a C1-C10 aliphatic group or phenyl group, which is unsubstituted or substituted with one or more C1-C5 alkyl groups or one other functional group, with simple aliphatic dienes R1CH=CR2-CR3=CHR4 in which R1-R4 are H or C1-C5 alkyl groups using as a catalyst a perfluorinated organic sulphonic acid or a Br+E,uml o+EE nsted acid derivative thereof. The reaction leads to dihydropyrans of the structure below in which R1-R4 have the meaning indicated above. The preferred perfluorinated organic sulfonic acids are perfluorooctanesulphonic acid, triflic acid, Nafion or a Br+E,uml o+EE nsted acid derivative of triflic acid. The preferred aldehydes are those wherein R is a C2-C6 aliphatic group or a phenyl group which is unsubstituted or mono-substituted with C1-C3 alkyl or with 4-Cl, 4-nitro or 3-methoxy. The preferred dienes are those wherein the groups R1-R4 are H or methyl. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6596686-B2 |
| priorityDate | 1997-01-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 72.