| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a22da5b7dd6ed60a21538e5edb23e051 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-5304
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-5004
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-5407 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-53
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-50 |
| filingDate |
1977-03-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1979-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_446805facee05e15fe35f7a199572dea |
| publicationDate |
1979-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4149014-A |
| titleOfInvention |
Process for the preparation of bis-(β-carboxyethyl)alkyl phosphine oxides from tris-cyanoethyl phosphine |
| abstract |
Lower alkyl bis-( beta -carboxyethyl) phosphine oxides are prepared from tris-cyanoethyl phosphine in a functionally coordinated sequentially ordered process comprising alkylating the tris-cyanoethyl phosphine to a phosphonium salt, dequarternizing the phosphonium salt to a lower alkyl bis-( beta -cyanoethyl) phosphine, oxidizing the phosphine to phosphine oxide, hydrolyzing the phosphine oxide with calcium hydroxide to produce a calcium salt of lower alkyl bis-( beta -carboxyethyl) phosphine oxide, and acidifying the calcium salt to produce lower alkyl bis-( beta -carboxyethyl) phosphine oxide. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5679849-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0156139-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0014747-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-19601889-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0156139-A3 |
| priorityDate |
1977-03-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |