http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-680994-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_54471a85c2a36f593d0cc781adf41bf2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c319ad0d27597ce8ed02b3eaa0ae01af http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f4c674f2c4b715cbb0efb5847ad34df0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b75b73e966a8d4daf619324117f166e9 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-676 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C49-607 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-673 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-62 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C49-587 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-607 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-587 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-62 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-67 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-66 |
| filingDate | 1948-10-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1952-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-680994-A |
| titleOfInvention | Improvements in or relating to the preparation of ª-ª unsaturated cyclopolymethylenic ketones |
| abstract | a b -Unsaturated cyclopolymethylenic ketones, alkylated or not, and having 10-18 carbon atoms in the ring, are prepared by (1) dehydrating by heat a ketol of the formula <FORM:0680994/IV (b)/1> alkylated or not, in which n is 8-16; or (2) thermal decomposition of an ester of the formula <FORM:0680994/IV (b)/2> alkylated or not, in which R1 is an organic radical and n is 8-16. The ketols of process (1) may be used in the pure or crude form (Specification 655,349). In examples: (1) thapsoin is dehydrated in the vapour phase at reduced pressure with an alumina on asbestos catalyst; the cyclohexadecenone may be reduced in presence of palladium or barium sulphate to give cyclohexadecanone. Also in examples: (2) 15-methylcyclopentadecanol-2-one-1 is converted similarly to 15-methylcyclopentadecene 2,3-one-1, and (3) cyclodecanolone-1,2 is converted to cyclodecenone, the non-dehydrated product being separated by benzene and calcium chloride. Also, (4) cyclopentadecanolone-1,2 is esterified with a mixture of lauric acid and lauryl chloride, and the ester is decomposed by heating at 250-300 DEG C. in vacuo to give cyclopentadecenone. Also, (5) cyclopentadecanolone-1,2 is heated in vacuo with naphthalene-b -sulphonic acid at 140-150 DEG C. to give cyclopentadecenone. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0015412-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0015412-A2 |
| priorityDate | 1947-10-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 49.