http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101659637-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d40285e27f4ed83b8728b0d477404958 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-85 |
| filingDate | 2009-09-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6660ba4007adf179793540efd88a768c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_50f9dd828924a0e27991ffa7759b7f2b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_21c94aeb340eeed49c5661b6feb4a2d4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a201f344ea991a8dda1d7b65db3553c9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_262c9deeefcc02750f9340ca0094f1ca http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ba7857cccacda11ec4aab59cb0aa3e90 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3366bb29ff2face443d81d98c60f680b |
| publicationDate | 2010-03-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-101659637-A |
| titleOfInvention | Preparation method of 2-chloro-3-cyanopyridine |
| abstract | The invention provides a preparation method of 2-chloro-3-cyanopyridine, which comprises the steps of: dissolving 3-cyanopyridine-N-oxide and bis(trichloromethyl)carbonate in an organic solvent, dropwise adding organic alkali at the temperature of minus 5 to 40 DEG C, heating to 30 to 75 DEG C for reaction after the dropwise adding; and after reaction, separating and purifying the reaction liquid,thus obtaining the 2-chloro-3-cyanopyridine. Compared with the prior art, the preparation method of 2-chloro-3-cyanopyridine has the beneficial effects that (1) the bis(trichloromethyl)carbonate is asafer chlorinating reagent and used for synthesizing 2-chloro-3-cyanopyridine, which can avoid the generation of highly polluting wastes such as sulfur dioxide, phosphoric waste water and the like, and has little influence on environment; and (2) the preparation method of 2-chloro-3-cyanopyridine has simple technique, relatively mild reaction condition and high chlorination yield. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109369519-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109369519-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109369521-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101941943-A |
| priorityDate | 2009-09-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 81.