http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1491933-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-29 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-54 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-29 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C55-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C53-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B41-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B31-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-03 |
| filingDate | 1975-03-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1977-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1491933-A |
| titleOfInvention | Manufacture of carboxylic acids |
| abstract | 1491933 Carboxylic acids BASF AG 17 March 1975 [18 March 1974] 10999/75 Heading C2C Carboxylic acids are prepared by oxidizing a methyl ketone with a hypochlorite in an aqueous medium in the presence, as a catalyst, of bromine, iodine, a haloamide where X is chlorine, bromine or hydrogen, R<SP>1</SP> is a sulphonic acid group, a sulphonate radical or a sulphonamide group and R<SP>2</SP> is hydrogen, an aliphatic radical, chlorine or bromine, or R<SP>1</SP> and R<SP>2</SP> together with the adjoining nitrogen form a heterocyclic radical containing at least one sulphonyl group, adjacent to the nitrogen atom or a phosphonyl group adjacent to the nitrogen wherein R<SP>3</SP> is hydrogen or alkali metal, or R<SP>1</SP> and R<SP>2</SP> together form the radical wherein R<SP>4</SP> is alkylene or R<SP>5</SP> is hydrogen, chlorine or bromine and R<SP>6</SP> is an aliphatic radical, and/or in the presence of a polymerization inhibitor. Preferred ketones are wherein R<SP>7</SP> is aliphatic, alkyl (1-12 C) or alkenyl (3-12 C), cycloaliphatic, araliphatic, aralkyl (7-15 C) and aralkenyl (8-15 C), an aromatic radical, or heterocyclic radical with or without inert substituents. Catalysts may be glutarimide, adipimide, sucinimide, cyanuric acid, 5,5-dimethylhydantoin, trisulphamide, N- methyl sulphamic acid and sodium triimidometaphosphate and polymerization inhibitors may be, e.g. sodium nitrite, hydrogen sulphide, sodium or potassium sulphide, lithium, sodium and potassium bisulphide, ammonium sulphide ammonium polysulphide, sodium thiosulphate phenol and thiophenol and many others. Examples describe the preparation of pivalic acid by oxidation of pinacolone with sodium hypochlorite and amidosulphonic acid; B-B- dimethylacrylic acid from mesityl oxide with sulphamide; cinnamal acid from cinnamalacetone and thymine; 5-methyl-hex-2-en-1-oic acid from 2-methylhept-4-en-6-one and amidosulphonic acid; 5-methylhexanoic acid from 2- methylheptan-6-one and diaza-bicyclo-[2,2,2]- octane; 5-methyl-hex-5-en-1-oic acid from 2- methyl-hept-1-en-6-one; cinnamic acid from benzalacetone with potassium bromide; and #-furyl-(2)-acrylic acid from furfurylideneacetone with melamine. |
| priorityDate | 1974-03-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 111.