| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9fb2ea0dd02af0cf5af98caf4d45a7fe |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A01N43-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A01P21-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-85
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-80 |
| filingDate |
1989-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1995-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_797d38465dc0f3942c8fa50f6b9f1956
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8b8a98cc86a010c761b105f558458d65
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b44f2112a2547e2028b0bfb6e11a6435
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_117d5a0fb8141fac19287a6ca0a5197d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_347dd19665829b20707366c7f7f27165
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b13e12895272e8e52962fc80ebf5b7fe
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_caadecf4f084e6a07c1b931be01235a0 |
| publicationDate |
1995-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
SU-1832681-A1 |
| titleOfInvention |
METHOD OF OBTAINING TETRACHLORONICOTINIC ACID |
| abstract |
The invention relates to heterocyclic compounds, in particular to the preparation of tetrachloronicotinic acid, which is a growth regulator, as well as an intermediate in the synthesis of pesticides. The goal is to accelerate the process and increase the yield of the target product. The preparation is carried out by the hydrolysis of tetrachlorocyanopyridine (THCP) with 90–93% HSO at a weight ratio of 1: (4.5–4.9) for 15–20 minutes at 115–120 ° C. The process is carried out followed by cooling the reaction mixture to 70–110 ° C and adding NaNO for 30–45 min with vigorous stirring and the molar ratio of TCCP: NaNO = 1: (1.1–1.13), yield up to 90–91%. The method provides a reduction in process time by 2 times. 1 tab. |
| priorityDate |
1989-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |