http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108117484-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-54 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C41-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-513 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-67 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-21 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-67 |
| filingDate | 2017-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108117484-B |
| titleOfInvention | Preparation method of citral |
| abstract | The invention provides a method for preparing citral, which comprises the following steps: under the supercritical condition, one or more selected from the group consisting of isoprenal diisobutylene alcohol, isopentene aldehyde diisoprenol and isopentene aldehyde diisoprenol are used as raw materials to obtain cis/trans-isopentene-3-methyl butadiene ether through thermal cracking reaction, and the cis/trans-isopentene-3-methyl butadiene ether is subjected to Claisen rearrangement and Cope rearrangement to obtain the citral. The invention is characterized in that the thermal cracking process is carried out under supercritical condition, cis/trans-isopentenyl-3-methyl butadiene ether is separated in a flash evaporation mode, and a trialkyl aluminum catalyst is introduced into a flash evaporation tank, so that cis/trans-isopentenyl-3-methyl butadiene ether is directly rearranged in the flash evaporation process to obtain citral, the reaction time is greatly shortened, and the product yield is improved. |
| priorityDate | 2017-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.