http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105017026-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-62 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-29 |
| filingDate | 2015-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-10-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-10-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105017026-B |
| titleOfInvention | The synthetic method of 2,4 difluoro benzene methanamines |
| abstract | The present invention relates to one kind synthesis as medicine and field of agrochemicals, specifically intermediate 2, the synthetic method of 4 difluoro benzene methanamines.The synthetic method of 2,4 difluoro benzene methanamines includes three below step：Step one：M-difluorobenzene, halogenating agent and paraformaldehyde react in the presence of catalyst, and 2,4 difluoro halogenation benzyls are made；Step 2：Quarternary ammonium salt compound IV is made with methenamine reaction in obtained 2,4 difluoro halogenation benzyls；Step 3：Obtained quarternary ammonium salt compound is obtained into 2,4 difluoro benzene methanamines with concentrated hydrochloric acid hydrolysis.The invention enables the cost reduction for preparing 2,4 difluoro benzene methanamines, operation more facilitates, and safety coefficient is high, is especially suitable for industrialized production. |
| priorityDate | 2015-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 85.