http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108359694-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C12P13-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12P13-00 |
| filingDate | 2018-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108359694-B |
| titleOfInvention | Preparation method of beta-ureido crotonate |
| abstract | The invention belongs to the field of organic synthesis, and discloses a preparation method of beta-ureido crotonic acid ester, which comprises the following steps: weighing reaction substrates A and B, adding a catalyst and a solvent, reacting in a constant-temperature culture oscillator to obtain a crude product, and then separating and drying by column chromatography to obtain a target product, wherein the reaction substrate A is selected from one of ethyl acetoacetate, methyl propionylacetate or ethyl butyrylacetate, and the reaction substrate B is selected from one of urea, methylurea or thiourea. The method has the advantages of simple process, simple and convenient operation, mild conditions, low cost, easy construction of the whole preparation system, environmental protection and popularization and use value. |
| priorityDate | 2018-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 36.