http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103073404-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_37f7cdbeab4e572bd01efb2196aabefd |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-323 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-69 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C13-21 |
| filingDate | 2012-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f9d641419e755e3a6803ebf11e363e16 |
| publicationDate | 2015-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103073404-B |
| titleOfInvention | Method for by-producing dipentene in preparation process of ambergris ketone |
| abstract | The invention discloses a method for by-producing dipentene in a preparation process of ambergris ketone. The method comprises the following steps: (1) preparing 3-methyl-3-penten-2-ketone by a conventional method, adding acetic anhydride to the 3-methyl-3-penten-2-ketone to be stirred for mixing evenly, then adding a catalyst of boron trifluoride, or ferric chloride or aluminum chloride to the mixture, heating the mixture to 40-50 DEG C, adding myrcene in the mixture, and performing reaction for 8 to 10 hours with a constant temperature after the completion of the addition; (2) using alkali to neutralize the obtained material in the step (1), standing for layering to obtain a organic phase, performing reducing pressure fraction, reducing the pressure to 40-60 mmHg, collecting mixture of myrcene and dipentene obtained by distillation at the temperature of 80-100 DEG C; (3) performing fraction on the mixture of the myrcene and the dipentene in the pressure of 40-60 mmHg to realize distillation at the temperature of 90-110 DEG C so as to obtain dipentene with the content of 52-55 percent; and (4) continuously reducing pressure of distillation obtained in the step (3) to 20-30 mmHg for fraction so as to realize distillation at the temperature of 80-100 DEG C to obtain dipentene with the content of 93 percent. |
| priorityDate | 2012-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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