http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109280011-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2603-50 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C17-35 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-74 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C25-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C17-35 |
| filingDate | 2018-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109280011-B |
| titleOfInvention | Synthesis method of OLED intermediate 2-bromopyrene |
| abstract | The invention provides a synthesis method of OLED intermediate 2-bromopyrene, which comprises the steps of firstly, taking 1-amino-2-bromopyrene as a raw material, and obtaining a 2-bromopyrene crude product by adopting a diazotization deamination method; putting the obtained 2-bromopyrene crude product into ethyl acetate with the weight being 1.5-2.5 times that of the crude product, heating to reflux, and cooling to 20 +/-2 ℃ to realize crystallization, so that the 2-bromopyrene crude product is refined, and finally, a 2-bromopyrene pure product with the purity being more than or equal to 99.5% is obtained; according to the invention, the 1-amino-2-bromopyrene is used for preparing the 2-bromopyrene, the yield is high, and the purity of the finally obtained 2-bromopyrene is high. Meanwhile, the invention provides the method for preparing the 1-amino-2-bromopyrene by reacting the 1-aminopyrene with the brominating reagent, the yield is high, and the price of the 1-aminopyrene is low; compared with the prior art, the synthesis method provided by the invention can reduce the cost for preparing 2-bromopyrene. |
| priorityDate | 2018-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 45.