http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114957066-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d2dc781a44c5dabc1302dffca4451a81 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-10 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C333-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C335-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C213-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C331-28 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C335-18 |
| filingDate | 2022-06-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_534fc2ac6687aeb2b6af3dfca608f78a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b46e58fa0db2bfe193f547646044624d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0dd21b8c6db033ec22f7564d2c3802c6 |
| publicationDate | 2022-08-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114957066-A |
| titleOfInvention | A kind of energy-saving and high-efficiency synthesis method of diafenthiuron |
| abstract | The invention relates to the field of diafenthiuron synthesis, and discloses an energy-saving and efficient synthesis method of diafenthiuron, which comprises the preparation of 1,4-bromo-2,6-diisopropylaniline; 2,2,6-diisopropylaniline Preparation of base-4-phenoxyaniline; preparation of three,2,6-diisopropyl-4-phenoxyphenyl thiocarbamate; four,2,6-diisopropyl-4 - Preparation of phenoxyphenyl isothiocyanate; Five, synthesis of diafenthiuron: adding 2,6-diisopropyl-4-phenoxyphenyl isothiocyanate and toluene at room temperature After tert-butylamine, the reaction was incubated for 12 h, and the solvent was spin-dried. The obtained solvent was recovered and used mechanically. The crude product was recrystallized with methanol, and cooled to -5°C for crystallization to obtain a white solid. The present invention uses hydrobromic acid and hydrogen peroxide to replace dangerous and toxic bromine for bromination, improves safety performance and the purity and yield of intermediates; uses CS 2 method instead of sodium hydrosulfide method to synthesize isothiocyanate, avoids 150 ℃ high temperature reaction can be carried out at about 40 ℃, which reduces the energy consumption of the reaction and reduces the loss of equipment at the same time. |
| priorityDate | 2022-06-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 87.