http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1022861-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d037bc74e34c7d73dd883f208aef0518 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C57-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D231-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-09 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-09 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-08 |
| filingDate | 1961-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0e07aad82473f4ab66a802e8ba2ba90e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ab346977f93f9a3ccea22cc454cef668 |
| publicationDate | 1966-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1022861-A |
| titleOfInvention | Substituted 3-pyrazolidinones |
| abstract | The invention comprises compounds of formula <FORM:1022861/C2/1> where R is alkyl, aryl or aralkyl, R1 is alkyl of at least 2 carbon atoms, aryl or aralkyl, and R2 and R3 are alkyl, monocyclic aryl or aralkyl or both are hydrogen; and their preparation by heating an a ,a -R,R1-b -propiolactone with a solution of a hydrogen halide in an inert organic solvent to obtain an a ,a -R,R1-b -halopropionic acid converting this to the acid halide or ester, which is then refluxed with a hydrazine R2NH.NHR3 optionally in the presence of a proton acceptor in an anhydrous organic solvent; the products may be N-alkylated. |
| priorityDate | 1961-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 23.