http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0929541-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-88 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-88 |
| filingDate | 1997-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_368ef9cd2dbab884afff0b0162250f15 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2a30c909e5bdc4798bf27adc4643fa5b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2e64175516a950bf571f6c21b824fc79 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_642a06bbc40ca055c929968731f77970 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_48cb647642e9ce80ee1368fe6fa4c3be http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d6a3818704d681d75bc16ea0df22d267 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_37f2b26b99ccff5218d0c0e596cf9545 |
| publicationDate | 1999-07-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0929541-A1 |
| titleOfInvention | Process for preparing phthalides |
| abstract | PCT No. PCT/EP97/05186 Sec. 371 Date Apr. 1, 1999 Sec. 102(e) Date Apr. 1, 1999 PCT Filed Sep. 22, 1997 PCT Pub. No. WO98/14441 PCT Pub. Date Apr. 9, 1998A process for preparing phthalides of the general formula I, where R1, R2, R3 and R4 are independently hydrogen, C1-C4-alkyl or C1-C4-alkoxy, by hydrogenating phthalic anhydrides of the general formula II, where R1, R2, R3 and R4 are each as defined above, with hydrogen in the presence of suspended catalysts of the Raney type in a hydrogenation apparatus by using a mixing apparatus to mix a liquid phase, which includes the catalyst and the phthalic anhydride used and resulting phthalide, and a gas phase, which includes the hydrogenating hydrogen, comprises using the mixing apparatus to introduce a mixing intensity of at least 50 W/l into the liquid phase. |
| priorityDate | 1996-10-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.