http://rdf.ncbi.nlm.nih.gov/pubchem/patent/PL-165287-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7339501040a829287a6ee236092a9e00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C23-04 |
| filingDate | 1991-04-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b7b6a4d14d72d0ef9ba6a8c4a182b657 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c7c9822a384a616cc7e59883e31ceb3d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7927aa7690ae053b2878cb8bf071fb89 |
| publicationDate | 1994-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | PL-165287-B1 |
| titleOfInvention | Method for the preparation of substituted gem-dluorocyclopropanes |
| abstract | 1. Method for the preparation of substituted gemiifluorocyclopropanesnof general formula I, wherenr1, R2, R3 and R4 represent hydrogen atoms or groupsnalkyl or aryl groups or alkoxy groups ornr1 together with RZ represent part of a hydrocarbon ring,ninvolving the addition of difluorocarbenento alkene in the presence of metal hydroxidesnand alkaline and quaternary ammonium saltsnas catalysts characterized in that the alkene of formulangeneral 2, wherein R1, R2, R31, and R4 are highernthe given meaning is reacted with dibromodifluoromethanenand bromoform in the presence of hydroxidesnalkali metals used in the formnconcentrated aqueous solutions or in solid formnpowdered, or in the presence of a solid mixturenpowdered metal hydroxides and carbonatesnalkali and in the presence of quaternary saltsnammonium or phosphonium or crown ethersnacting as a catalyst. |
| priorityDate | 1991-04-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 45.