http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106083564-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-367 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-487 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-487 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-367 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C59-70 |
| filingDate | 2016-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-02-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-02-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106083564-B |
| titleOfInvention | A kind of synthesis of 2,6- dimethyl phenoxyacetic acid and purification process |
| abstract | The synthesis of one kind 2,6- dimethyl phenoxyacetic acid and purification process, are related to medicine intermediate field, Comprising: toward 2, sodium hydroxide solution is added dropwise for the first time after halogenated acetic acids is added for the first time in the aqueous solution of 6- xylenol, control temperature is at 35 DEG C or less during sodium hydroxide solution is added dropwise, it heats up after being added dropwise, second of dropwise addition sodium hydroxide solution after halogenated acetic acids is added second after reflux 1~4 hour, after being added dropwise, continue reflux 6~8 hours, fully reacting.Monoxone and sodium hydroxide of the present invention are separately added dropwise and are added in two portions；Reaction process is monitored using pH value, it has been found that PH >=13 of reaction solution or stop reaction when PH≤7 in reaction process, then add raw material in time, reduce the reaction time.Present invention greatly reduces the dosage of starting halo acetic acid, the reaction time is no more than 24 hours. |
| priorityDate | 2016-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 55.