http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S6456638-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2f8cfa5aee4410611b5c562275c9f8e3 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-72 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-14 |
| filingDate | 1987-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f1e50965cdba5e94449399bde655ecb1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_912f2158c823ccbf13e3477f3858572d |
| publicationDate | 1989-03-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S6456638-A |
| titleOfInvention | Production of acetylacetone |
| abstract | PURPOSE:To effectively recover the titled compound consumed by a side reaction and to efficiently obtain the titled compound in reaction between methyl acetoacetate and acetic anhydride, adding a fixed amount of water to the reaction solution, heating and aging while stirring and separating by distillation. CONSTITUTION:In obtaining acetylacetone by reacting methyl acetoacetate with acetic anhydride, water in an amount corresponding to number of mols. of triacetylmethane prepared as a by-product, namely 0.2wt.%-3wt.% based on the formed reaction solution of water is added to the reaction solution, which is aged at >=60 deg.C, preferably >=80 deg.C for >=1hr while stirring and separated by distillation to give acetylacetone. |
| priorityDate | 1987-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.