http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-102004006579-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-65 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-515 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C41-54 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-65 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-51 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-21 |
| filingDate | 2004-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ac72631f87e1f917ee2c015610997bb0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a92507e2712c6fc73598943500348710 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b83141d2a3b3fba99e5d8ff449afa9c9 |
| publicationDate | 2005-08-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-102004006579-A1 |
| titleOfInvention | Process for the preparation of 2,7-dimethyl-octa-2,4,6-trienial |
| abstract | The present invention relates to an improved process for the preparation of 2,7-dimethyl-octa-2,4,6-trienes of the formula I, by a) double enol ether condensation of a butenedial-bis-acetal of the formula II with an enol ether of the formula III, in the presence of a Lewis acidic catalyst to a condensation product of formula IV, where the radicals R 1 and R 2 of the formula II to IV independently of one another are C 1 -C 6 -alkyl; b) hydrolysis of the acetal groups of IV by addition of an aqueous acid to give the dialdehyde of formula V; c) conversion of V into the dialdehyde I by reaction with an aqueous base and d) crystallization of I from the reaction mixture, wherein the process steps a) to d) are carried out in the presence of an inert, water-immiscible organic solvent. |
| 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: 62.