http://rdf.ncbi.nlm.nih.gov/pubchem/patent/SK-278450-B6
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D473-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D473-04 |
| filingDate | 1994-05-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_208b86f12a4caf9cc13be2a67a83869b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a139b14222ff60ff051ff0db1a5e7119 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2e51fb77c01b317e6fb50c887bed26d9 |
| publicationDate | 1997-06-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | SK-278450-B6 |
| titleOfInvention | Process for the preparation of 3,7-dihydro-3-alkyl-1h-purine- -2,6-diones |
| abstract | This patent describes a procedure closed to the preparation of 3,7-dihydro-3-alkyl-1H-purine-2,6-diones with a formula (I), where R is a hydrogen atom, methyl, ethyl group closed to 1-alkyl-5-nitroso-6-amino-2,4/1H,3H/-pyrimidione with a formula (II), where R is methyl, ethyl, and this production procedure is based on that principle, that the compound with a formula (II) is suspended in water and after that a hydrogenation, at the temperature of 20 up to 100 Celsius degrees and hydrogen pressure of 0,1 up to 3 MPa, is provided, while the catalysts based on Pd or Ni on the active carbon is present, however 1 up to 2 equivalents of formic acid are added, after the equimolar hydrogen quantity is consumed, and this acid is acting 1 up to 8 hours, and after that the mixture is alkalinised with the use of 1 up to 3 equivalents of alkali hydroxide, at the temperature of 30 up to 100 Celsius degrees, for 0,5 up to 5 hours and the substance with a formula (I) is created, after the pH value has been corrected. |
| priorityDate | 1994-05-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.