http://rdf.ncbi.nlm.nih.gov/pubchem/patent/AR-039386-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_173bc2c63b34988699010ba05e5b1376 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2602-44 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-455 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C319-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C49-733 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C323-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-57 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-79 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C315-04 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C317-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C323-62 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-79 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-733 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C319-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C323-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C317-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-45 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-57 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C315-04 |
| filingDate | 2003-04-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2005-02-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | AR-039386-A1 |
| titleOfInvention | PROCESS FOR THE PREPARATION OF CYCLIC DICETONES |
| abstract | Claim 1: A process for the preparation of a compound of the formula (1), wherein: Q is an organic substituent selected such that the compound of the formula (1) has a pK with a value of 1 to 5 ; D represents hydrogen or R3; E is hydrogen or R4; or D and E together form (C2-3) alkylene, which may be mono- or poly-substituted with R6; A is (C1-2) alkylene, which may be mono- or poly-substituted with R5; or when D and E are not (C2-3) alkylene, A may additionally be carbonyl, oxygen or -NR7-; R1, R2, R3, R4, R5 and R6 are each and independently of each other, hydrogen, (C1-4) alkyl, phenyl, (C1-4) alkoxy, halogen, hydroxy, cyano, hydroxycarbonyl or alkoxycarbonyl ( C1-4); and R7 is (C1-4) alkyl, alkoxycarbonyl or (C1-4) alkylcarbonyl, comprising: a) converting a compound of the formula (2) in which R1, R2, A, D and E are as previously described. defined for formula (1), either in the presence of an amine base and a catalytic amount of a cyanide, or in the presence of an alkali metal alcoholate or an alkaline earth metal alcoholate, in a salt of the formula (3) in which R1, R2, A, D and E are as defined in formula (1) and M + is an alkali metal ion, an alkaline earth metal ion or an ammonium ion; b) reacting said compound with a compound of the formula: XC (O) -Q in which X is a leaving group and Q is as defined for formula (1), whereby a compound of the formula is obtained (4) in which R1, R2, A, D, E and Q are as defined for formula (1); and c) converting said compound in the presence of cyanide ion catalytic amounts and in the presence of a base in a compound of the formula (1). |
| priorityDate | 2002-04-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.