| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D239-30 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D239-30 |
| filingDate |
1996-08-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1997-10-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e6476aa5f0680b4f53184cebc3c8c251
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_28bdc05b6a2959fcea2545c1b5197d66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_20fd09f4289ba4ef266333808d6a0643 |
| publicationDate |
1997-10-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-5677453-A |
| titleOfInvention |
Process for the preparation of 4,6-dichloropyrimidines |
| abstract |
4,6-Dichloropyrimidines are obtained by the reaction of 4,6-dihydroxypyrimidines with excess phosphoryl chloride in a particularly advantageous manner when no base is added, during and/or after the reaction 0.75 to 1.5 mol of phosphorus trichloride and 0.7 to 1.3 mol of chlorine are added per equivalent of exchanged hydroxyl groups so that an excess of phosphorus trichloride with respect to chlorine is always present, and finally phosphorus trichloride and phosphoryl chloride are separated off. This process can be carried out in a particularly simple manner and also continuously. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6255486-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6608199-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6441170-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6441171-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004054181-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6982331-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5911962-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6066734-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6734304-B2 |
| priorityDate |
1995-08-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |