http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109232383-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D209-88 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D209-88 |
| filingDate | 2018-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109232383-B |
| titleOfInvention | Method for synthesizing 4-bromocarbazole |
| abstract | The invention discloses a synthesis method of 4-bromocarbazole, belonging to the field of organic synthesis. The method comprises the steps of taking o-chloronitrobenzene as an initial raw material, synthesizing 2, 2' -dinitrobiphenyl through a high-temperature coupling reaction under the catalysis of copper powder, then obtaining 4-nitrocarbazole through ring closure of triethyl phosphite, obtaining diazonium salt through reduction and diazotization of zinc powder under the acidic condition of the 4-nitrocarbazole, and further reacting with cuprous bromide to synthesize a product, namely 4-bromocarbazole. The method has the advantages of easily available raw materials, low production cost, high yield of more than 70 percent, and easy industrial production, and provides a foundation for industrialization of 4-bromocarbazole and subsequent derivatives thereof. |
| priorityDate | 2018-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 52.