http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106167449-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-78 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-825 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-157 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-78 |
| filingDate | 2016-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2018-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2018-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106167449-B |
| titleOfInvention | A kind of synthetic method of parahydroxyacet-ophenone |
| abstract | Present invention mainly discloses a kind of synthetic methods of parahydroxyacet-ophenone, and phenylacetate is prepared into for raw material first with phenol and aceticanhydride；Then under Aluminium Trichloride as Catalyst, o-dichlorohenzene reaction, steam distillation are added in, activated carbon filters, and crystallization obtains parahydroxyacet-ophenone；Circular response twice is carried out using the o-dichlorohenzene layer containing o-hydroxyacetophenone that layering obtains after previous reaction and phenylacetate later, parahydroxyacet-ophenone is made.Compared with prior art, the present invention (is continuously operated three times using the secondary midwifery round-robin method of suppression, it recycles twice), the o-dichlorohenzene containing o-hydroxyacetophenone is utilized in cyclic process, the generation of o-hydroxyacetophenone in subsequent technique can be effectively reduced, parahydroxyacet-ophenone yield is made at least to improve 10%, HPLC detection purity >=99.7%.The method can effectively improve the yield of parahydroxyacet-ophenone, rationally recycle by-product, be suitble to industrialized production, reduce production cost. |
| priorityDate | 2016-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 64.