http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-4112629-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/C07F9-5407 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-54 |
| filingDate | 1991-04-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9d07c9056b9dae375b27b22ee70f5940 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0617ee2f302073070ed6d3af1ca613b4 |
| publicationDate | 1991-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-4112629-A1 |
| titleOfInvention | PROCESS FOR PREPARING (ALPHA) -KETOCARBONSAEURES |
| abstract | Phosphonium salts of formula (I) are new, where Ar = phenyl opt. substd. by nonionic gps.; X = halogen. Prodn. of alpha-keto acids of formula (II) is effected by (a) reacting a carbonyl cpd. of formula (III) with (I) in an inert solvent in the presence of a base, and (b) removing the arylmethyl gps. from the resulting alpha,beta-unsatd. ester of formula (IV) by hydrogenolysis. R1 and R2 = H or organic gps., opt. forming a ring. USE - (II) include cpds. useful as intermediates for bacterial lipopolysaccharides (see DE4112630), amino acids or heterocyclic pharmaceuticals or plant protection agents. |
| priorityDate | 1990-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 91.