http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S61215342-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_24aca9ded2638ea793d05360dde7a4a0 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-52 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B31-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-61 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B57-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-743 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-93 |
| filingDate | 1985-03-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6a48cb8be90afcd3b9f41ff9c47b2ea2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f257e63f6f2ea4841148a14cac14be01 |
| publicationDate | 1986-09-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S61215342-A |
| titleOfInvention | Production of optically active 4-hydroxy-2-substituted-2-cyclopentenone |
| abstract | PURPOSE: To obtain the titled substance by reacting a lactone with a 4- hydroxy-2-substituted-2-cyclopentenone at a specific molar ratio in the presence of a specific catalyst and hydrolyzing the reaction product separated easily from a mixture containing one of the optical isomer in excess. n CONSTITUTION: The objective compound of formula III is produced by (1) reacting (A) the 4-hydroxy-2-substituted-2-cyclopentenone of formula I (R is allyl or propargyl) with (B) a lactone such as (1R, 5S)-6,6-dimethyl-4-hydroxy-3- oxabicyclo[3,1,0]hexan-2-one at a molar ratio of 1.5W2:1 in the presence of p-toluenesulfonic acid or benzenesulfonic acid as a catalyst under azeotropic dehydration in an azeotropic solvent to obtain a reaction mixture containing the condensation products of formula II wherein either one of the optically active isomer is present in excess to its antipode, (2) separating an optically active cyclopentenone ether compound therefrom and (3) hydrolyzing the ether. n COPYRIGHT: (C)1986,JPO&Japio |
| priorityDate | 1985-03-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 42.