http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111377831-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e664dfbb5f622ad5002f8a01f8680dc2 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B2200-07 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C253-30 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C253-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A01P13-00 |
| filingDate | 2018-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1e1f1a030cd6679fc19f293a1ee0eb03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ad6fd679f61aea235c65c8a0d3220cb9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b9d27dc6ba25052899a6b1c365f4926d |
| publicationDate | 2020-07-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111377831-A |
| titleOfInvention | A kind of preparation method of herbicide cyhalofop-butyl |
| abstract | The invention discloses a preparation method of the herbicide cyhalofop-butyl, which specifically relates to the field of biopharmaceuticals, and specifically includes the following steps: step 1, selecting a clean double-necked flask, adding an organic solvent into the double-necked flask, and adding (R) ‑2‑[4‑(2‑Fluorine‑4‑cyanophenoxy)phenoxy]propionic acid was dissolved in the organic solvent; in step 2, solid inorganic base was continued to be added inside the double-necked flask, and after the temperature was raised to 50°C Insulation, the reaction was carried out in a two-necked flask for 0.5 to 1 hour. In the present invention, (R)-2-[4-(2-fluoro-4-cyanophenoxy)phenoxy]propionic acid is dissolved in an organic solvent, and a solid inorganic base is added and the temperature is raised to reflux with water to react, HPLC tracking reaction is carried out, so that the reaction steps of cyhalofop-methyl are shorter, the operation is simple, the reaction by-products are few, easy to control, no harm, small safety risk, product yield and optical purity are improved, and the reaction process is improved. Part of the raw materials can be recycled, and the cost is low, which is conducive to industrial production. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115490617-A |
| priorityDate | 2018-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 60.