http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-905821-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_dcb88e6c103e4974b104452c51fbb4a5 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C49-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C49-557 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-58 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-557 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-04 |
| filingDate | 1961-03-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1962-09-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-905821-A |
| titleOfInvention | Improvements in the production of methyl ketones |
| abstract | Methyl ketones are made from terminal epoxide compounds of the formula <FORM:0905821/IV (b)/1> , wherein R is an alkyl, alkenyl, cycloalkyl, aryl or aralkyl radical which may bear substituents non-reactive with magnesium halides, by isomerisation in the liquid phase at 50 DEG C. to 250 DEG C. in the presence of a magnesium halide as catalyst. Examples of suitable epoxide compounds are propylene oxide, 1,2-epoxybutane, 1,2-epoxybutene-3, 1,2-epoxydodecane, 1,2-epoxy pentane, 1,2-epoxy pentadecane, 1,2-divinyl-4-epoxyethylcyclohexane and its isomers, 1,2-epoxy-3-phenylpropane, orthonitrostyrene oxide, and ortho-methoxystyrene oxide. The isomerisation may be carried out in an inert solvent or diluent such as toluene, xylene or an ether. The preferred magnesium halides are the iodide and bromide, which are suitably used as their etherates. When the boiling point of the epoxide is low the reaction is preferably carried out under pressure. Small amounts of isomeric aldehydes may be formed together with the desired methyl ketones. Examples describe the preparation of methyl decyl ketone, methyl tridecyl ketone, acetone and also the methyl ketones from the isomerisation of the monoepoxides of 1,2,4-trivinylcyclohexanone. In Example 5, propylene oxide yields in addition to acetone, some propionaldehyde and high boiling condensation products. The methyl ketones prepared by this reaction may be used as perfumes or for combating granary pests. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0225990-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3853532-A |
| priorityDate | 1960-03-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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