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classificationCPCInventive http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-935
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D407-12
classificationIPCInventive http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-935
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D407-12
filingDate 1992-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date>
grantDate 1993-07-20-04:00^^<http://www.w3.org/2001/XMLSchema#date>
inventor http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e016486248503993114558a3834ec5ec
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9a93ce243bc4c79fff97d28af65e3583
publicationDate 1993-07-20-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber US-5229529-A
titleOfInvention Method of producing α,β-unsaturated ketolactones
abstract The present invention provides a method of preparing alpha , beta -unsaturated ketolactones which are useful for production of prostaglandins having one or more halogen substituent(s) at the 16 or 17 portion in high yield, in which, a dimethyl (2-oxoalkyl) phosphonate having one or more halogen substituents, a starting material, is reacted with a bicyclolactone aldehyde under the presence of an alkali metal hydride and a zinc compound.
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