http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102344451-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_31b287de4d99b6ec6f81a2f75ef10e5e |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D473-12 |
| filingDate | 2011-10-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dec7d52e296c5d269157db849f433f3e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7c6a88fb6aabe870de3e9105999e2fd6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e6b8cecd1e8503697002abc087dbe745 |
| publicationDate | 2013-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102344451-B |
| titleOfInvention | Method for preparing caffeine |
| abstract | The invention relates to the field of chemical synthesis, in particular to a method for preparing caffeine. The method comprises the following steps of: adding an oxidizing agent to remove reducing impurities after ring closure, and adding a reducing agent to remove oxidizing impurities in a refining process of crude caffeine. Therefore, the yield and the purity of the product are improved, the separation of 1, 3-dimethyl-4-amino-5-allophamic acid amide is dispensed with, the production period is shortened, and the production cost is reduced. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110964015-A |
| priorityDate | 2011-10-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 55.