http://rdf.ncbi.nlm.nih.gov/pubchem/patent/IT-1276711-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_36089addd8e49e968b4c7e13c517dd1c |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C- |
| filingDate | 1995-06-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1997-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9fa22f1949fe77f34aac99b4e710eb13 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5c573d7c003cde15db3c5359d8fd7957 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0833801675e04414f2c0000b3b2a112b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0290f8648e3074d507bb4b44e0095f06 |
| publicationDate | 1997-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | IT-1276711-B1 |
| titleOfInvention | PROCESS FOR THE PREPARATION OF A USEFUL INTERMEDIATE IN THE SYNTHESIS OF ORGANIC COMPOUNDS |
| abstract | A process for preparing the dichloride of 5-amino-2,4,6- triiodoisophthalic acid by chlorinating 5-amino-2,4,6- triiodoisophthalic acid with thionyl chloride in the presence of a suitable solvent characterised in that the reaction is performed in the presence of catalytic quantities of a phosphonium salt of formula R1R2R3R4PX (I) in which R1, R2 and R3, which are the same or different, represent C1-C4 alkyl groups, phenyl or tolyl groups, R4 represents a hydrogen atom or a C1-C6 alkyl group and X represents halogen, mesylate or tosylate is described. The dichloride of 5-amino-2,4,6-triiodoisophthalic acid obtained according to the process according to the invention is useful as an intermediate in the synthesis of iodine-containing contrast media. |
| priorityDate | 1995-06-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.