http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-991526-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_af99df08b153738cd418446a75d09bfc |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-61 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-61 |
| filingDate | 1963-10-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1965-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-991526-A |
| titleOfInvention | Process for the production of polychloropyridines |
| abstract | Polychloropyridines are prepared by reacting a mono- or polychloro-2-(trichloromethyl)-pyridine with excess chlorine at elevated temperature. The -CCl3 group is replaced by a chloro radical with a carbon tetrachloride as by-product, and nuclear hydrogen may be replaced by chlorine with hydrogen chloride as by-product. The process may be in the liquid or vapour phase and temperatures up to 250 DEG C. or over may be used, with ultra-violet irradiation. Examples describe the preparation of 2,3,5,6 - tetracxloropyridine from 3,5 - dichloro - 2 - (trichloromethyl) pyridine, 2,3,5-trichloro-6-(trichloromethyl) pyridine, and a mixed chloro-(trichloromethyl) pyridine composition; pentachloropyridine from 3,4,5-trichloro-2-(trichloromethyl) pyridine and 2,3,4,5-tetrachloro - 6 - (trichloromethyl) pyridine; 2,3,4,5 - tetrachloropyridine from 3,4,5 - trichloro - 2 - (trichloromethyl) pyridine; 2,3,5,6-tetrachloropyridine and pentachloropyridine from 3,5-dichloro-2-(trichloromethyl) pyridine; a polychloropyridine composition from 2,3-dichloro-6-(trichloromethyl) pyridine, and from mixed 2-(trichloromethyl) pyridines and chloropyridines; tetrachloropyridine and pentachloropyridine composition from dichloro-2-(trichloromethyl) pyridine composition. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0254053-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0022885-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0402536-A1 |
| priorityDate | 1962-10-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.