http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5648495-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-61 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-61 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B37-10 |
| filingDate | 1996-01-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1997-07-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7c240808be835c7b48d1f74a5f21ab10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_923a4b7ee8457f072494cf033629555d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_687ba56ccbecf7351068abe6273ead1b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_641ef53804cbbe57f28d2570acab38a7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_240cb2e17c8f3d262e8c24752a3d60be |
| publicationDate | 1997-07-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-5648495-A |
| titleOfInvention | Process for the preparation of 5-substituted 2-chloropyridines |
| abstract | The present invention relates to a process for the preparation of 5-substituted 2-chloropyridines of the formula (I) <IMAGE> (I) by reaction of acetenamides of the formula (II) <IMAGE> (II) with Vilsmeier reagent, which is prepared by reaction of dialkylformamides of the formula (III) <IMAGE> (III) with a chlorinating agent, the excess of which is removed from the reaction mixture by distillation or by addition of dialkylformamide after completion of the reaction of the Vilsmeier reagent with the acetenamide of the formula (II), wherein in the formulae (I)-(III): R represents optionally substituted alkyl or aralkyl, R1 represents C1-C4-alkyl or aryl-C1-C4-alkyl, R2 and R3 represent straight-chain, branched or cyclic C4-C8-alkyl. |
| priorityDate | 1995-01-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 58.