http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106632068-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a24c0e855caf67464aacd9b60109ffa3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D237-14 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D237-14 |
| filingDate | 2016-11-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4ad4a38ba1ff94af9ee114d915a0145b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_208a92c69ffeae6b8f69c6516390daf4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8f0797de794c422a403f049b1e5db3f9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9ed1024554147b9f23c6b752d3234685 |
| publicationDate | 2017-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106632068-A |
| titleOfInvention | Synthesis method of 4-bromine-6-chloropyridazine-3(2H)ketone |
| abstract | The invention relates to a synthesis method of 4-bromine-6-chloropyridazine-3(2H)ketone. The synthesis method of the 4-bromine-6-chloropyridazine-3(2H)ketone comprises the following steps: continuously conducting reaction in a proper solvent and under the action of alkali at 0 to 100 DEG C for 6 to 25 hours by taking 3-amino-6-chloropyridazine, liquid bromine, concentrated sulfuric acid and sodium nitrite as raw materials to produce a 4-bromine-6-chloropyridazine-3(2H)ketone crude product, wherein the ratio of the 3-amino-6-chloropyridazine to the liquid bromine is 1:(0.8-3.2), and the ratio of the 3-amino-6-chloropyridazine to the sodium nitrite is 1:(1.0-2.1); performing purification to obtain a 4-bromine-6-chloropyridazine-3(2H)ketone pure product. According to the synthesis method of the 4-bromine-6-chloropyridazine-3(2H)ketone, the raw materials are easily available and the price is reasonable; meanwhile, heavy metal and corrosive gas are not used in the preparation reaction, the reaction is mild, special requirements on the reaction equipment are not needed, and the common corrosion-resistant equipment can perform production; in addition, the reaction condition is moderate. |
| priorityDate | 2016-11-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 60.