| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_966a6c1f382ec9bcb5e3839dfd73e5b8 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B2200-09 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-56 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C33-048
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-56 |
| filingDate |
2001-06-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0094d61d1dfbd84ab3d8ea656eb78b8d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8de24e7c9bb21786a20fbbab82af342e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_08853f2cd00925dd00f7e404945523f4 |
| publicationDate |
2002-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2002037749-A |
| titleOfInvention |
Pentol isomerization |
| abstract |
PROBLEM TO BE SOLVED: To provide a useful intermediate for the production of vitamin A, Z-3-methylpent-2-en-4-yn-1-ol in a mixture of Z and E stereoisomers. E-3- Provided is a method for catalytically isomerizing to methylpent-2-en-4-yn-1-ol. SOLUTION: In a two-phase system of an aqueous phase and a stereoisomer mixture phase, wherein the stereoisomer mixture is optionally present in a substantially water-immiscible organic solvent, a bromine radical is used as an isomerization catalyst. Mix the reaction mixture at a temperature between -10 <0> C and about 100 <0> C. |
| priorityDate |
2000-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |