http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102320957-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d6a6f422b091ba12ea61d4adbf1b0e8e |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C59-88 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-09 |
| filingDate | 2011-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-07-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0fa69a2e88d3a443c17b01ba7dbdf546 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9cf338dee3bd73504f3fb7a691e2e078 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_132ab358e9d0d0da9bcc79af673fc1c9 |
| publicationDate | 2013-07-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102320957-B |
| titleOfInvention | Method for preparing 4-(2,4,5-trifluorophenyl)-3-oxo-butanoic acid |
| abstract | The invention discloses a method for preparing 4-(2,4,5-trifluorophenyl)-3-oxo-butanoic acid. The method comprises the steps of: (1) adding 2,4,5-trifluorophenyl acetonitrile, ethyl alpha-bromoacetate and zinc to tetrahydrofuran, and reacting to obtain ethyl 4-(2,4,5-trifluorophenyl)-3-oxo-butanoate; and (2) adding a sodium hydroxide solution to the reaction system obtained in the step (1), carrying out a hydrolysis reaction, then adding diluted hydrochloric acid, and post-treating to obtain 4-(2,4,5-trifluorophenyl)-3-oxo-butanoic acid. The preparation method of 4-(2,4,5-trifluorophenyl)-3-oxo-butanoic acid disclosed by the invention has the beneficial effects that: the raw materials are inexpensive and easily available, a large amount of waste acid water is not generated, the yield is relatively high, the product quality is stable, and the method is a process method with industrial prospects. |
| priorityDate | 2011-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 48.