http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108707121-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d0d02c0f878c47b7cc4387f45078c1c0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D249-14 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D249-14 |
| filingDate | 2018-08-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9d439bb7aebe50070b802440e097a337 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f99eb4df58ea3e910451bf0d2520a656 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3c92fdbcce75c6f957f40c7de1e11214 |
| publicationDate | 2018-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108707121-A |
| titleOfInvention | A method for preparing 3-isopropyl-4-amino-1,2,4-triazolin-5-one |
| abstract | The invention discloses a method for preparing 3-isopropyl-4-amino-1,2,4-triazoline-5-one, comprising: step 1, in n-butanol solvent, at a reaction temperature of 50-50 At 150°C, react isobutyric acid and hydrazine hydrate to generate isobutyrhydrazide; step 2, at a reaction temperature of 0-60°C, react the isobutyrhydrazide reaction solution synthesized in step 1 with phosgene or solid light and n-butanol as a solvent to react to generate butyl 2-isobutylcarbazinate; step 3, in an alkaline solution, at a reaction temperature of 80 to 120°C, the 2-isobutyl synthesized in step 2 butyl carbazate and hydrazine hydrate to generate 3-isopropyl-4-amino-1,2,4-triazolin-5-one and n-butanol. The present invention uses a single n-butanol as a solvent in the whole reaction process without separation in the middle process, and has the advantages of simple reaction system, fast reaction speed and less "three wastes"; n-butanol can be used mechanically repeatedly; and the synthesis method yield is as high as 85%. |
| priorityDate | 2018-08-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 17.