http://rdf.ncbi.nlm.nih.gov/pubchem/patent/TW-200934759-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f1e3fd6a03dde914f89ebd13fb2bf6c7 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C71-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C219-20 |
| filingDate | 2008-04-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4ac963a9f3cc88c78ad5f12ed6d61fec http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_26fd0bad8ad7469a8d8d156888e595a7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9f406cb24b4e9d8d9f82ca9c991032a4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9d44f17aaa4758a15b4da76966be856c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_adb843509e1a0465dfdf64861c86bf1f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cbc428f8675094c6ab5af47878186222 |
| publicationDate | 2009-08-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | TW-200934759-A |
| titleOfInvention | Method for synthesizing 4, 4-dihalo-2-dialkylaminomethylene-3-oxo-butanoic acid alkyl ester composition and derivatives thereof |
| abstract | This invention provides a method for synthesizing 4, 4-dihalo-2-dialkylaminomethylene-3-oxo-butanoic acid alkyl ester compound and its derivatives. A molecular sieve with porous sodium and calcium aluminum silicates is added to effectively remove chlorine ions and facilitate reacting completely. This method mainly takes 2,2-dihaloacetyl chloride and N,N-dialkylamino acrylate alkyl ester as raw materials and is added with a specific ratio of the molecular sieve having porous sodium and calcium aluminum silicates and performs reaction in the same reaction flask under organic solvents and organic alkali. When the reaction is completed, the layers are effectively extracted and separated. 4, 4-dichloro-2-dialkylaminomethylene-3-oxo-butanoic acid alkyl ester compound and its derivatives with high purity is obtained by vacuum drying. The method of this invention is a novel and clean production method to achieve advantages of effective synthesis, few side reactions, easy-to-operate, saving production time, and recycling the used molecular sieve and saving production cost and the usage of organic solvent. |
| priorityDate | 2008-02-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 106.