http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-940671-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7e01317ed02c83e1caf2694b49ac4438 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C313-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C313-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C313-00 |
| filingDate | 1960-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1963-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-940671-A |
| titleOfInvention | Salts of organic sulpho-sulphinic acids, their preparation, and also the preparationof salts of organic disulphonic acids |
| abstract | The invention comprises salts of 1,2- or 2,3sulpho sulphinic acids of the general formula Me SO3 CHR1-CH(R2) SO2 Me in which R1 and R2 represent hydrogen or alkyl, hydroxy alkyl or an ether of hydroxy alkyl, or of the general formula Me SO3 C(R1)=CH(R2) SO2 Me in which R1 and R2 represent hydrogen or hydroxy alkyl, and Me represents a monovalent cation. The salts are prepared by reacting the corresponding unsaturated organic compounds R1CH=CHR2 or R1CCR2 with an acid solution of an inorganic or organic acid sulphite in intimate contact with oxygen or a gas containing oxygen, there being used at least 2 moles of the sulphite per mole of the unsaturated compound. The acid sulphite is preferably used free from neutral sulphite and in sufficient excess to compensate for that which becomes oxidised to sulphate. The reaction may be effected in aqueous or organic solution at, for example, -10 DEG to 100 DEG C. The sulpho-sulphinate formed also comprises some corresponding disulphonate especially when the reaction is carried out in the presence of copper salts as catalysts. The sulphosulphinates themselves may be subsequently oxidised to the disulphonates for example, by autoxidation or with hydrogen peroxide. Examples describe the conversion of (1) alkyl alcohol to the potassium di-salt of 1-hydroxy propane 2-sulphinic 3-sulphonic acid and some potassium 1-hydroxypropane 2:3-disulphonate which are separated; (3) monoglycol ether of alkyl alcohol to the salt HOC2H4OCH2 CH(SO2K) CH2SO3K; (4) butene (2)-diol-1,4 to HOCH2CH(SO2K)CH(SO3K).CH2OH; (5) ethylene to the potassium disalt of ethane-1 sulphinic-2-sulphonic acid; (6) propylene to the potassium di salt of propane-1-sulpho-2-sulphinic acid; (7) propargyl alcohol to the potassium disalt of 1-hydroxy-propene-(2) sulphinic -3-sulphonic acid and butine-(2)-1:4-diol to the potassium di-salt of 1:4-dihydroxy butene-(2)2-sulphinic 3-sulphonic acid. In Example (8) ethylene is reacted with triethyl ammonium hydrogen sulphite yielding the triethyl ammonium ethane sulpho-sulphinate. All these sulpho sulphinates are oxidised to the disulphonates using aqueous HO2. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107311896-A |
| priorityDate | 1959-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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