http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S6236358-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2f8cfa5aee4410611b5c562275c9f8e3 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-26 |
| filingDate | 1985-08-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bd4a33354614fe72ef4ab6d29a72c2ec http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_17510d2a269533f88632f33ced2c83a0 |
| publicationDate | 1987-02-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S6236358-A |
| titleOfInvention | Production of chloromethylpyridine |
| abstract | PURPOSE: To obtain the titled compound useful as an intermediate raw material for medicines, agricultural chemicals, etc., advantageously and industrially and advantageously in good yield without using a large amount of a mineral acid solvent, by chlorinating an inorganic acid salt of methylpyridine as a raw material in an aqueous solvent with Cl 2 while irradiating with ultraviolet rays. n CONSTITUTION: Methylpyridine is dropped into concd. hydrochloric acid and dehydrated to a given water concentration or below at ≤100°C, etc., to give an inorganic acid salt, particularly preferably hyrochloride of the methylpyridine expressed by the formula (n is an integer 1W4), which is then chlorinated at 50W160°C, preferably 70W130°C in a solvent in 1W50%, preferably 5W30% concentration by introducing Cl 2 thereinto while irradiating with ultraviolet rays to afford the aimed chloromethylpyridine, e.g. 2-chloromethylpyridine. n EFFECT: The chlorination of the CH 3 group can be selectively carried out with almost no chlorination of the pyridine uncleus. The salt has individually about 150°C melting point, but is industrially and readily handled by the water contained (≥1%) therein since the melting point is reduced to about ≤100°C. n COPYRIGHT: (C)1987,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2006512331-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2004052860-A1 |
| priorityDate | 1985-08-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.