| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4aefb306d25a71b08bb9414cdb92efb3 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C273-1809
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C275-30 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C275-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C275-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C275-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C273-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-18 |
| filingDate |
1992-01-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1995-04-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_87a38fcb53a002e16a4393d3c03d13bd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7321ac3e0f84675fdd6367475a8fa5fd |
| publicationDate |
1995-04-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0520130-B1 |
| titleOfInvention |
Process for preparing symmetric N, N'-disubstituted aromatic urea |
| abstract |
Disclosed herein is an improved process for preparing N,N' -disubstituted urea derivatives of the following formula(I) <CHEM> wherein Ar represents an aromatic radical optionally substituted with a halogen, alkyl or alkoxy group, which comprises reacting an aromatic mononitro compound, an aromatic primary amine and synthesis gas in the presence of a catalyst consisting essentially of a divalent palladium compound as a main catalyst component and an ammonium or phosphonium salt containing a halogen atom as a co-catalyst component with or without a solvent. |
| priorityDate |
1991-06-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |