| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_aff47363b289ed8c06f8defc3223477e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0ee508ac90ed93fd02d621aae5f7b96d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3828e8ab6e86920458ec64d9fb545aa4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_000578692fb3118c64f6ae0f8204dfcb |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-5304 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-53 |
| filingDate |
1977-10-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1979-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ed167e8cc656f99f30916b68a21bc895
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6d2d848fe87940d7a3b2548b6b35d6a3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a7adc79089a49b1f7622408057749996
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8470f88befb79787c3aef6e50f77622e |
| publicationDate |
1979-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4162264-A |
| titleOfInvention |
Process for preparing diphenylphosphinylacetic acid hydrazide |
| abstract |
The process according to the present invention comprises reacting diphenylchlorophosphine with ethylene oxide in a medium of an inert organic solvent. The resulting reaction mixture is heated in the presence of an alkyl ester of a haloacetic acid until the formation of an alkyl ester of diphenylphosphinylacetic acid. The latter, without separation and any additional purification, is reacted with hydrazine hydrate. The advantage of the process according to the present invention resides in a simplified technology, preparation of the desired product in a single stage at a high yield and the use of readily available commercially produced reagents. |
| priorityDate |
1977-10-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |