http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S57131779-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_20d3042eb4ea7c9afd525aa89373349d |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D305-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D315-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D309-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-33 |
| filingDate | 1981-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cdb867d8f6f9293408b0e2689e746a44 |
| publicationDate | 1982-08-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S57131779-A |
| titleOfInvention | Preparation of alpha-acetyllactone |
| abstract | PURPOSE: To obtain the titled compound useful as a synthetic intermediate, etc. for an ameliorant of sequelae due to the cerebral thrombosis easily in high yield, by the intramolecular alkylation of a specific acetoacetic ester derivative. n CONSTITUTION: An acetoacetic ester derivative of formulaI[X is halogen or RSO 2 O (R is alkyl or aryl); n is an integer 1W4]is subjected to the intramolecular alkylation to give an α-acetyllactone of formula II. The intramolecular alkylation is carried out in the presence of an alkali metal, e.g. Li, or a basic substance, e.g. NaH, in a solvent, e.g. benzene or THF. Preferably, a metallic iodide, e.g. NaI, or crown ether is used for increasing the reaction yield. n COPYRIGHT: (C)1982,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9139553-B2 |
| priorityDate | 1981-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.