http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-267919-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b846d234e11355f030790ed5c04f97e7 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D201-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D201-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D223-10 |
| filingDate | 1961-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1961-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | ES-267919-A1 |
| titleOfInvention | PROCEDURE FOR OBTAINING LACTAM BY NITROSATION OF CYCLOHEXILIC COMPOUNDS |
| abstract | Caprolactam is prepared by nitrosation of hexahydrobenzoic acid, a functional derivative thereof, or cyclohexylketones of the formula: <FORM:0950513/C2/1> where Y is a hydrocarbon radical, by treating with an agent capable of forming NO+ ions in the reaction medium, in the presence of fuming sulphuric acid, by mixing the reagents at below 35 DEG C. and then heating in a thin layer to produce the caprolactam. Nitrous anhydride, or nitrosyl sulphate may be used as nitrosating agents at a temperature between 75 DEG and 140 DEG C. The process may be batchwise or continuous with recycling and examples describe the nitrosation of hexahydrobenzoic acid and ketones in an apparatus in which the heat of formation of the mixture is removed in a cooler at -18 DEG C., and the reaction takes place in a two-sectional bubble cooler heated to 100 DEG C. The product is cooled, a portion recycled and periodically a portion separated, the hexahydrobenzoic acid present hydrolysed, and the caprolactam extracted with chloroform. <PICT:0950513/C2/1> |
| priorityDate | 1960-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.