| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D233-32 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D233-32 |
| filingDate |
1982-12-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1987-04-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7085b9be80d7bf3c791a479d28d2fa04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_69aae162bb6d7055942b861d6e6e0f11 |
| publicationDate |
1987-04-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4659837-A |
| titleOfInvention |
Method for the preparation of 1,3-disubstituted 4,5-cis-dicarboxy-2-imidazolidones |
| abstract |
A process for the preparation of 1,3-disubstituted 4,5-cis-dicarboxy-2-imidazolidones useful as intermediates in the preparation of Vitamin H (biotin), said intermediates have the general formula ##STR1## in which R is an aliphatic hydrocarbon radical having 1 to 8 carbon atoms, an aralkyl radical or an aromatic hydrocarbon radical, preferably an allyl radical or a benzyl radical, comprising reacting a defined diaminosuccinic acid with phosgene in the presence of an alkali metal hydroxide. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5151525-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0588227-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0564142-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S61172862-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S61109772-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110903208-A |
| priorityDate |
1981-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |