http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102060717-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C213-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C215-76 |
| filingDate | 2011-01-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102060717-B |
| titleOfInvention | The synthetic method of the bromophenol of 3 amino 4 |
| abstract | The synthetic method of the bromophenol of 3 amino 4.Its step is：(1) diazo-reaction：The amino-phenol of 3 nitro of raw material 4 is dissolved in hydrobromic acid, sodium nitrite in aqueous solution is added dropwise at 0 10 DEG C and reacts 1 3h, the obtained diazonium salt solution of 3 nitrophenol 4.(2) bromination reaction：Step (1) resulting solution is added dropwise in the hydrobromic acid aqueous solution of cuprous bromide, stirs 40 50 DEG C, reaction is carried out and passes through crystallization, is filtrated to get the bromophenol solid of 3 nitro 4；(3) reduction reaction：It is dissolved in solid obtained by step (2) in the solution in ethanol and adds ferric oxide catalyst, be heated to 50 100 DEG C, and hydrazine hydrate aqueous solution is added into mixture, is carried out 2 5h reactions, obtain the bromophenol of 3 amino 4.The bromophenol of 3 amino 4 of the present invention synthetic method is reasonable in design, mild condition, easy to operate, product yield is higher, is adapted to industrialized production. |
| priorityDate | 2011-01-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 43.