http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1716092-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e0bf0928b608797b70bbc2b91c7e52e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C41-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-515 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-65 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-21 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-51 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-65 |
| filingDate | 2005-02-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2010-09-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1710affba2c969bd0fab8baf551b1c98 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b671ef3690562d894f127d31519d2937 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a65ae7b899411b945178604394ccdf61 |
| publicationDate | 2010-09-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-1716092-B1 |
| titleOfInvention | Method for producing 2,7-dimethyl-octa-2,4,6-trienedial |
| abstract | The invention relates to an improved method for producing 2,7-dimethyl-octa-2,4,6-trienedial of formula (I), by: a) a double enol ether condensation of a butenedial bis-acetal of formula (II) with an enol ether of formula (III) in the presence of a Lewis acid catalyst to form a condensation product of formula (IV), the groups R1 and R2 of formulas (II) to (IV) independently of one another representing C1-C6 alkyl; b) a hydrolysis of the acetal groups of (IV) by the addition of an aqueous acid, forming the dialdehyde of formula (V); c) conversion of (V) into the dialdehyde (I) by reaction with an aqueous base; and d) crystallisation of (I) from the reaction mixture, whereby the steps (a) to (d) are carried out in the presence of an inert, organic solvent that is immiscible with water. |
| priorityDate | 2004-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 120.