METHOD OF 2E, 4E DODECADIENE ACIDS PRODUCTION
A process for the preparation of 2E,4E carboxylic acids of the general formula (wherein X stands for hydrogen, hydroxy or C1-4alkoxy) from 2Z,4E carboxylic acids of the general Formula VII (wherein X is as stated above) comprises isomerizing the 2Z,4E carboxylic acid of the general Formula VII or an...
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| creator | KORTVELYESSY GYULA DR.,HU REITER JOZSEF DR.,HU BARKOCZY JOZSEF ,HU |
| description | A process for the preparation of 2E,4E carboxylic acids of the general formula (wherein X stands for hydrogen, hydroxy or C1-4alkoxy) from 2Z,4E carboxylic acids of the general Formula VII (wherein X is as stated above) comprises isomerizing the 2Z,4E carboxylic acid of the general Formula VII or an alkali metal or ammonium salt thereof, in the melt or in the presence of an inert solvent, in the presence of a catalyst comprising a free electron-pair, and thereafter separating the carboxylic acid of the general Formula I in the form of the ammonium salt thereof without removing the catalyst. The process is readily feasible and there is no need to remove the catalyst. The compounds of the Formula I are known intermediates useful in the preparation of known selective insecticides. |
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The process is readily feasible and there is no need to remove the catalyst. The compounds of the Formula I are known intermediates useful in the preparation of known selective insecticides.</description><edition>5</edition><language>eng</language><subject>ACYCLIC OR CARBOCYCLIC COMPOUNDS ; APPARATUS THEREFOR ; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ; CHEMISTRY ; GENERAL METHODS OF ORGANIC CHEMISTRY ; METALLURGY ; ORGANIC CHEMISTRY ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; THEIR RELEVANT APPARATUS ; TRANSPORTING</subject><creationdate>1990</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19900411&DB=EPODOC&CC=CS&NR=268682B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19900411&DB=EPODOC&CC=CS&NR=268682B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KORTVELYESSY GYULA DR.,HU</creatorcontrib><creatorcontrib>REITER JOZSEF DR.,HU</creatorcontrib><creatorcontrib>BARKOCZY JOZSEF ,HU</creatorcontrib><title>METHOD OF 2E, 4E DODECADIENE ACIDS PRODUCTION</title><description>A process for the preparation of 2E,4E carboxylic acids of the general formula (wherein X stands for hydrogen, hydroxy or C1-4alkoxy) from 2Z,4E carboxylic acids of the general Formula VII (wherein X is as stated above) comprises isomerizing the 2Z,4E carboxylic acid of the general Formula VII or an alkali metal or ammonium salt thereof, in the melt or in the presence of an inert solvent, in the presence of a catalyst comprising a free electron-pair, and thereafter separating the carboxylic acid of the general Formula I in the form of the ammonium salt thereof without removing the catalyst. The process is readily feasible and there is no need to remove the catalyst. 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The process is readily feasible and there is no need to remove the catalyst. The compounds of the Formula I are known intermediates useful in the preparation of known selective insecticides.</abstract><edition>5</edition><oa>free_for_read</oa></addata></record> |
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| subjects | ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING |
| title | METHOD OF 2E, 4E DODECADIENE ACIDS PRODUCTION |
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