http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108947868-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_653c418e41edbb4e1ce8bc5e53e70cec http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ff32b672c7f63471957cfead6f25425a |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C253-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C253-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-50 |
| filingDate | 2017-05-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_69e5e4ab55f16da11e4a060d1add11b3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4983cf833f5612d162ace09dc45b5abe http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_60bb5d5fd658c74a23142c9199cb0a34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_76762c045c0a43f6f6c7515c5c720f43 |
| publicationDate | 2018-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108947868-A |
| titleOfInvention | A kind of preparation technology of 2,4-difluorobenzonitrile |
| abstract | The invention discloses a preparation process of 2,4-difluorobenzonitrile. The steps are as follows: (1) 2,4-difluorobenzoic acid and thionyl chloride are used as raw materials to react to generate 2,4-difluorobenzene Formyl chloride; (2) react 2,4-difluorobenzoyl chloride with ammonia water to generate 2,4-difluorobenzamide; (3) react 2,4-difluorobenzamide with trifluoroacetic anhydride , that is, the preparation of 2,4-difluorobenzonitrile. The present invention optimizes the design of the reaction raw materials and synthesis routes for the synthesis of 2,4-difluorobenzonitrile. The reaction raw materials used in the present invention are cheap, easy to obtain, and safe to use; the reaction conditions are mild, no high-temperature reaction is required, and the requirements for equipment Low, the yield of the product is high, the purity is high, and it is easy to realize industrial production. |
| priorityDate | 2017-05-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 69.