http://rdf.ncbi.nlm.nih.gov/pubchem/patent/PL-161003-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C23-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C13-04 |
| filingDate | 1989-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1993-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | PL-161003-B1 |
| titleOfInvention | Method for the preparation of substituted gem-difluorocyclopropanes |
| abstract | Method for the preparation of substituted gemdifluorocyclopropanesnof the general formula I, wherenR *, R2, Rj, and R4 represent hydrogen atoms, groupsnalkyl, aryl groups or alkoxy groups ornR2 together with R3 represent part of a hydrocarbon ring,ncharacterized by that dibromomethane,ndibromodifluoromethane and alkene of general formula 2, vnwhere R, R, Rj and R4 represent hydrogen atoms,n2alkyl groups, aryl groups or alkoxy groupsnor R2 together with RJ represent part of a hydrocarbon ringnreacted in the presence of hydroxidesnalkali metals used in the formnconcentrated aqueous solutions or in solid form,npowdered or in the presence of a powdered mixturenalkali metal hydroxides and carbonatesnand quaternary ohmic salts,npreferably ammonium or phosphorus or ethersncorona as a catalyst, used in quantitynnot exceeding 0.1 mole per 1.0 mole of substrateninsufficiently used. |
| priorityDate | 1989-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 51.