http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-2849960-T3
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_981a37900e6991fb373304ed2ba5a703 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_37f4922dfb7777b019e504b885211b8e |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D401-04 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D231-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C251-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C249-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D401-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D251-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-14 |
| filingDate | 2017-09-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-08-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f9812e964d3d4d3e4e810934611f9337 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b797fe628321eeab04390c1c5ed78f0d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_61e97ce3a4aa8b1291e1ed57e4f0afac http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2c613e4fb87896e43452cd47350e2fe1 |
| publicationDate | 2021-08-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | ES-2849960-T3 |
| titleOfInvention | Process for the preparation of 3-fluoroalkyl-5-pyrazolecarboxylates and 3-fluoroalkyl-5-pyrazolecarboxylic acids |
| abstract | A process for preparing 3-fluoroalkyl-5-pyrazolecarboxylates (I), ** (See formula) ** wherein R1 is selected from C1-C6 haloalkyl, R2 is selected from C1-12 alkyl, C3-8 cycloalkyl, aryl C6-18 and C7-18- arylalkyl, R3 is selected from H, C1-C12 alkyl, benzyl, C6-18 aryl, and pyridyl; characterized in that in step (A), the oxalic acid derivatives of formula (II), ** (See formula) ** in which R2 is as defined above; X is F, Cl, or Br; they are reacted with the compounds of formula (III), ** (See formula) ** in which R4 is selected from C1-12 alkyl, C3-8 cycloalkyl, benzyl and C7-18 arylalkyl-; R1 is as defined above; in the presence of a base to form the compounds of formula (IV). ** (See formula) ** in which R1, R2, R4 are as defined above and that in step (B) in the presence of hydrazine H2N-NHR3 (III) in which R3 is as defined above and a acid, cyclization of (IV) takes place to form (I). |
| priorityDate | 2016-09-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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