http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-682280-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c902faf6ae746c51fc8010672fc22894 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-85 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-85 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-80 |
| filingDate | 1950-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1952-11-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-682280-A |
| titleOfInvention | Purification of ortho-methoxyphenylacetone |
| abstract | In a method for the purification of o-methoxyphenylacetone containing as impurities one or more aldehydes and/or other ketones and/or one or more other organic compounds which form more readily than o-methoxyphenylacetone an addition complex with a bisulphite, crude o-methoxyphenylacetone is brought into contact with an alkali metal bisulphite, and the o-methoxyphenylacetone is separated in purified form from the complex formed between the bisulphite and the impurities present. The bisulphite may be in the form of finely-divided solid, but is preferably used in aqueous solution. The crude o-methoxy phenylacetone may be dissolved in a water-immiscible organic solvent, e.g. benzene, toluene, chloroform dichlorethane, ether, petroleum ether or ethyl acetate. Examples describe the separation of purified o-methoxyphenylacetone from a mixture of (1) a toluene solution of crude o-methoxyphenylacetone obtained by Experiment 2 of Specification 671,240, and aqueous sodium bisulphite solution; (2) the separated product of (1) and further bisulphite solution; (3) 85.5 per cent o-methoxyphenylacetone and 14.5 per cent o-methoxybenzaldehyde with solid sodium bisulphite; (4) as in (3) but with aqueous sodium bisulphite. The bisulphite addition compound is treated with concentrated hydrochloric acid and the liberated o-methoxybenzaldehyde is recovered; (5) a benzene solution of o-methoxyphenylacetone and o-methoxybenzaldehyde with aqueous sodium bisulphite. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114858944-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5221992-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114858944-A |
| priorityDate | 1949-08-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 41.