http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-4143287-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c6d3641176039fff1c8f9a25d894ec97 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2601-16 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C205-45 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C205-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C255-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C255-54 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-45 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-38 |
| filingDate | 1991-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b20105f1cf74541a5ff1bd0b6ddd880c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d496731d2c3c66c7a9c56f769eed6729 |
| publicationDate | 1993-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-4143287-A1 |
| titleOfInvention | METHOD FOR PRODUCING 2-ARYL-CYCLOHEX-2-EN-3-OL-1-ONES |
| abstract | Prodn. of 2-aryl-cyclohex-2-en-3-ol-1-ones (I) comprises (a) reacting a 3-aryloxy-cyclohex-2-en-1-one (II) with anhydrous potassium carbonate in a solvent at 20-120 deg.C and (b) liberating (I) by adding acid. R = NO2 or CN; X = CH2 or C(CH3)2. The reaction is carried out using at least 1 mol. equiv. of anhydrous K2CO3 in a dipolar aprotic solvent, esp. DMSO, sulpholane or DMF, at 40-100 deg.C and the acid used in the liberation of (I) is acetic acid or an acid having an acidity greater than acetic acid. USE/ADVANTAGE - (I) are herbicides, miticides and mite ovicides. They are also intermediates for other pesticides. The method uses more readily accessible starting materials, avoids problematic operational and/or purifcn. procedures and gives cpds. (I) in better purity and yields e.g. 40-75%, than prior art processes, e.g. Tetrahedron 8, 49 (1960) where max. yield is 29%. |
| priorityDate | 1991-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 63.