http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004034257-A1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B2200-09 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2601-16 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C315-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C317-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C403-22 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C317-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C315-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C403-22 |
| filingDate | 2002-02-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1bf8356764c560e6d7cb2747daf22d91 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_22943210b6f0979ee644f829258188a2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a2e7b81edc0d0bda0ca9529cb23dbfea |
| publicationDate | 2004-02-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2004034257-A1 |
| titleOfInvention | Novel sulfone derivatives and process for producing these |
| abstract | There are provided production processes for cyclic sulfone compounds of formula (2) or (4): n n n wherein the dashed lines represent that a double bond is present at one of three positions indicated; Ar and the wavy line are as defined below, characterized in that compounds of formula (1) or (3): n n n wherein Ar is aryl optionally having a substituent(s) and the wavy line represents either one of E/Z geometrical isomers or their mixture, is subjected to cyclization in the presence of an acid catalyst. These processes are excellent processes as the production processes for retinol from the viewpoints of raw material costs, intermediate purification, the number of steps, and the like. |
| priorityDate | 2001-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 904.