http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101723816-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2b5ae46947776cdc84b1e1af7b34ac24 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-225 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-04 |
| filingDate | 2009-11-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-06-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ff2a7ceaca51eae0b30309f7119a57d5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_578baad455742f792e5657d181bfbf76 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_457c00205afa930f8139760f390663ce |
| publicationDate | 2013-06-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-101723816-B |
| titleOfInvention | Method for preparing 2-ethyl-4-(2,2,3-trimethylcyclopent-3-en-yl)-but-2-enal |
| abstract | The invention relates to a method for preparing 2-ethyl-4-(2,2,3-trimethylcyclopent-3-en-yl)-but-2-enal, which comprises the following steps: synthesizing the 2-ethyl-4-(2,2,3-trimethylcyclopent-3-en-yl)-but-2-enal by campholenic aldehyde and n-butanal which are taken as raw materials, putting the campholenic aldehyde and a catalyst I into a reaction kettle, and heating to the temperature of between 65 and 90 DEG C, wherein the mass ratio of the campholenic aldehyde to the catalyst I is 1:0.1-0.2; orderly adding the n-butanal and a catalyst II into the mixed solution of the campholenic aldehyde and the catalyst I respectively, wherein the mass ratio of the campholenic aldehyde to the n-butanal is 1:1.0-1.5, and the mass ratio of the campholenic aldehyde to the catalyst II is 1:0.1-0.4; and after addition of the materials, controlling the temperature to between 75 and 100 DEG C, continuously reacting for 2 to 3 hours, washing crude product oil with water to neutrality, and distilling the crude product oil under reduced pressure to obtain the 2-ethyl-4-(2,2,3-trimethylcyclopent-3-en-yl)-but-2-enal. The method has the advantages that: the campholenic aldehyde and n-butanal are adopted as main raw materials to synthesize the 2-ethyl-4-(2,2,3-trimethylcyclopent-3-en-yl)-but-2-enal product, the reaction conditions are mild, the operation is safe and convenient, the yield and quality of the product are greatly improved, and the aroma of sandalwood products synthesized is simple to treat. |
| priorityDate | 2009-11-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.