| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-61 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D215-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D217-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D217-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-89
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-84
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D215-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D215-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-61
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-81
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-79 |
| filingDate |
1990-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c1c376d9aefb14d0e95c8c871d95205c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5724c2cfaecc6802b72c8a0454eab59b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5ddc8cfb64b1cada16fdeb2d944a7362
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b4edace02f80cb512929d219614624fa |
| publicationDate |
1991-07-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0438691-A1 |
| titleOfInvention |
Process for the preparation of substituted 2-chloropyridines |
| abstract |
A new process for the preparation of substituted 2-chloropyridine derivatives of the formula (I) provided in which R¹ to R⁴ have the meaning given in the application text.n n n The new process is characterized in that pyridine-1-oxides of the formula II with an aromatic carboxylic acid chloride in the presence of an inert organic solvent and in the presence of an acid acceptor at temperatures between -20 ° C and 200 ° C, then optionally reacted at temperatures between 70 ° C and 160 ° C with phosgene or thionyl chloride and the product obtained optionally further separated.n n n In particular, the process serves for the production of 2-chloro-5-methylpyridine, which can be used as an intermediate for pharmaceuticals or for insecticides. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5502194-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0439745-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0619307-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0556683-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022099692-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0439745-B1 |
| priorityDate |
1990-01-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |