http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108276265-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-81 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-697 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-675 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-81 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-78 |
| filingDate | 2017-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108276265-B |
| titleOfInvention | Method for separating 9-fluorenone and 2-bromo-9-fluorenone |
| abstract | The invention belongs to the field of organic matter purification operation, and particularly relates to a method for separating 9-fluorenone and 2-bromo-9-fluorenone. Completely dissolving 9-fluorenone and 2-bromo-9-fluorenone in a solvent p-xylene to obtain a solution; taking a supernatant solution, putting the supernatant solution into a zone melting test tube, and condensing; adding a solvent p-xylene into the zone melting test tube, and continuing condensation treatment until the mixture is completely solidified; performing zone melting purification experiment, wherein the zone melting times are 5 times, the experiment temperature of the purification instrument is adjusted to 60-70 ℃ in the first 2 times, the experiment speed is 9-11mm/h, the experiment temperature of the purification instrument is adjusted to 40-45 ℃ in the last 3 times, and the experiment speed is 6-8 mm/h; labeling the zone melting test tubes in sections; the solvent p-xylene was removed from each sample and tested by HPLC. The invention solves the problems of impurity burnout and thermal decomposition and supersaturation in the zone melting of 9-fluorenone and 2-bromo-9-fluorenone. |
| priorityDate | 2017-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 20.