http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2004007466-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c61018bf61b7f8e4571cb789c5715131 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d669af06cb2abbcd6823699582a97002 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e691a08162b54267493aaa829dba423c http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8f39ff46e2666b9ee6d6644857f0696b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D239-52 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D239-52 |
| filingDate | 2003-07-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e46f8b8e4d73b4c6a017fca9018b227f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7419398b2087ab923aacf3b9b9e37cac http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5ff85665803248f106eb00a80f982ad7 |
| publicationDate | 2004-01-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-2004007466-A1 |
| titleOfInvention | Method for producing highly pure crystalline 4-amino-5,6-dimethoxypyrimidine |
| abstract | The invention relates to a method for producing highly pure crystalline 4-amino-5,6-dimethoxypyrimidine by: a) reacting 4-amino-6-chloro-5-methoxypyrimidine with methanol and with a base at a temperature ranging from 20 to 100 DEG C, whereby: b) the methanolic solvent is entirely or partially replaced by water; c) the aqueous or aqueous/methanolic solution is extracted using t-butyl methyl ether, and; d) the extracted product is crystallized out of the t-butyl methyl ether. It has been surprisingly shown that an extremely pure and crystalline 4-amino-5,6-dimethoxypyrimidine can be produced with a high yield by using t-butyl methyl ether as an extracting agent. In addition, the method can be carried out in a comparatively technically simple manner. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103709108-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103709108-B |
| priorityDate | 2002-07-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 43.