http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1471186-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c89cdb408a39eb40fc69d27627685b9e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25B3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D333-72 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C317-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C317-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C313-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25B3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D333-72 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C315-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C317-14 |
| filingDate | 1974-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1977-04-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1471186-A |
| titleOfInvention | Process for the preparation of a sulphone or of a mixture of sulphones |
| abstract | 1471186 Sulphones KERNFORSCHUNGSANLAGE JULICH GmbH 31 May 1974 [2 June 1973] 24314/74 Heading C2C [Also in Divisions C3 and C7] Sulphones are prepared by electrolysing a solution of SO 2 to form SO 2 <SP>-</SP> ions which are reacted with organic compounds containing one or more atoms or groups replaceable by the SO 2 <SP>-</SP> ions, e.g. halogen compounds, sulphonic acid esters or sulphuric acid esters. Suitable solvents include acetonitrile or an excess of the organic reactant. A substance to promote conductivity may be added, e.g. a tetraalkylammonium salt. The organic reactant may be added before or after the formation of the SO 2 <SP>-</SP> ions. The reaction may be effected in a cell subdivided into an anode chamber and a cathode chamber by means of a diaphragm or an ion exchanger membrane. Examples prepare dibutylsulphone from n-butyl bromide and benzo[c]thiophen dioxide from o-xylylene dibromide. Other specified starting materials are dimethyl sulphate, chloroacetonitrile and chloracetone. |
| priorityDate | 1973-06-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 38.