http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-4024343-B2
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2601-16 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C403-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C69-734 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C43-303 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D317-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F7-1804 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F7-1892 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C403-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C43-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D317-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-587 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C43-303 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F7-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-377 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-602 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C59-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-13 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-734 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D319-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C403-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 |
| filingDate | 1997-06-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2007-12-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2007-12-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-4024343-B2 |
| titleOfInvention | Method for producing polyene ester and polyenoic acid |
| abstract | Preparation of polyene esters or polyene acids of formulae (I') and (I'') is claimed comprises reacting a polyene-(di)-O,O-dialkylacetal of formula A-CH(OR4)2 (II') or (R4O)2CH-B-CH(OR4)2 (II'') with a vinyl-ketene acetal or corresponding analogue of formula (III), in the presence of a Lewis acid, followed (where R5 and R6 are both 1-6C alkyl or both tri(1-6C alkyl)silyl, or together form 1,2-ethylene or 1,3-trimethylene) by hydrolysis. The resulting compounds (IV') and (IV'') are treated with strong base and the R7 groups are optionally converted to the appropriate substituents; A = a monovalent conjugated polyene group optionally substituted by CH3; B = a bivalent conjugated polyene group optionally substituted by CH3; R1,R2 = H or CH3; R3 = H or 1-6C alkyl; R4,R5 = 1-6C alkyl; R6 = 1-6C alkyl or tri(1-6C alkyl)silyl; or R5 and R6 are both tri(1-6C alkyl)silyl, or together form 1,2-ethylene or 1,3-trimethylene; R7 = 1-6C alkyl, H, 2-hydroxyethyl or 3-hydroxy-n-propyl. The CH=CH-CR1=CR2-COOR3 groups are in each case attached to the end position(s) of the A or B conjugated chain. Compounds (IV') and (IV") are new where the CH(OR4)-CH2-CR1=CR2-COOR7 groups are each attached to the end positions of the A or B conjugated chain. Compounds (III) are new where R5, R6 = 1-6C alkyl; or R5+R6 = (CH2)s; s = 2 or 3; excepting the compounds 1,1-dimethoxy-1,3-butadiene; 1,1-diethoxy-3-methyl-1,3-butadiene; 2-allylidene-Ä1,3Üdioxolane; 2-(1-methyl-allylidene)-Ä1,3Üdioxolane and 2-(2-methyl-allylidene)-Ä1,3Üdioxolane. |
| priorityDate | 1996-06-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 38.