| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e8c716f4fab5a99048f5218a2812b582 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D487-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-12 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D471-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C233-05 |
| filingDate |
2007-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7cdfb0eba2e3a5470c47a1718208ce5b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f9f39281307952e188f5710ea886bb33
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7b23e6a2606562c3183810d53a5261cd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_94dd8304bb8bbb1424b4ee4e96ab0a72 |
| publicationDate |
2008-12-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-2004650-A2 |
| titleOfInvention |
Process for the preparation of zaleplon and an intermediate thereof |
| abstract |
A process for the preparation of N-[3-[3-(dimethylamino)-l-oxo-2-propenyl]phenyl]-N-ethyl acetamide of formula (II), comprising reacting a compound N-[3-[3-(dimethylamino)-l-oxo-2-propenyl]phenyl] acetamide of formula (III), with an ethylating agent in the presence of a strong alkali metal hydroxide and a phase transfer catalyst in a polar-aprotic solvent, and a process for preparation of Zaleplon, which is substantially free of impurities using the said compound of formula (II). |
| priorityDate |
2006-02-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |