| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d1bd10f13ffe612eefce244f59c10e6f |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D263-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D263-44 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D263-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D263-32 |
| filingDate |
2001-10-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7e4bcd98eb08474b09e64aa17986d38c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9fab012f3a727b184a1c49cc684b98f3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b3681c3babf83fcb96529092882d8788
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2888d6a388982043e62d004a9092e590 |
| publicationDate |
2002-04-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2360033-A1 |
| titleOfInvention |
Process for the preparation of n-carboxyanhydrides |
| abstract |
The invention relates to a process for the preparation of N-carboxyanhydrides by reaction of the corresponding amino acid with phosgene, diphosgene and/or triphosgene in a solvent medium, characterized in that the reaction is a least partially carried out in the presence of an unsaturated organic compound which has one or more ethylenic double bonds, one of the carbon of at least one ethylenic double bond of which is completely substituted by substituents other than halogen atoms. The N-carboxyanhydrides are thus obtained with better yields and an improved purity. |
| priorityDate |
2000-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |