http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S56139467-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8ef6ef5fcea57c992721adbad835fdfa |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D239-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C275-16 |
| filingDate | 1980-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_434463966a55a5f8be68464879a051f8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_acc4bc40ccddc00f1b3da3e374f27de3 |
| publicationDate | 1981-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S56139467-A |
| titleOfInvention | Preparation of 6-methyluracil |
| abstract | PURPOSE: To obtain the titled compound in high yield and in high purity, by heating a lower alkyl ester of acetoactic acid and urea in a low-boiling hydrocarbon, removing water distilling with the solvent out of the system, condensing the compounds quickly through hydration, followed by heating the condensed compound in an alkali and neutralization. n CONSTITUTION: In condensing a lower alkyl ester of acetoacetic acid with urea to give β-uraminocrotonic ester, the compound are heated and reacted in a low-boiling hydrocarbon (e.g., n-hpexane, n-heptane, etc.), and the reaction is carried out while water distilling together with the solvent being removed out of the system. Caustic alkali is added to the reaction solution, which is neutralized, to prepare 6-methyluracil. The condensation reaction is done in the presence of an acidic catalyst, e.g., conc. hydrochloric acid, etc., so that the reaction time can be shortened. The desired compound is obtained from the raw materials in high yield not less than 90% based on theoretical yield. Since the solvent can be recycled in use, its amount is small. n USE: A plant growth regulator, an intermediate for drugs. n COPYRIGHT: (C)1981,JPO&Japio |
| priorityDate | 1980-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.