Method for Producing Isononanoic Acid Esters, Starting from 2-Ethyl Hexanol
申请人:Oxea GmbH
公开号:US20150158805A1
公开(公告)日:2015-06-11
A Process for preparing carboxylic esters of a mixture of structurally branched C9 monocarboxylic acids proceeding from 2-ethylhexanol is characterized in that
(a) 2-ethylhexanol is dehydrated to an octene mixture in the presence of a catalyst;
(b) the octene mixture obtained in step a) is reacted in the presence of a transition metal compound of group VIII of the periodic table of the elements with carbon monoxide and hydrogen to give a mixture of isomeric isononanals;
(c) the mixture of isomeric isononanals obtained in step b) is oxidized to a mixture of structurally branched C9 monocarboxylic acids; and
(d) the mixture of structurally branched C9 monocarboxylic acids obtained in step c) is reacted with alcohols to give carboxylic esters.
A facile method for synthesis of three carbon-homologated carboxylic acid by regioselective ring-opening of β-propiolactones with organocopper reagents
β-carbon-oxygen fission to give 3-substituted propionic acids. Among these three kinds of organocopper reagents, diorganocuprate, especially halomagnesium cuprate gave the highest yields of the acids, which was remarkably observed in the ring-opening of sterically hindered β-propiolactones such as β-methyl- and α,β -dimethyl-β-propiolactones and also in the reactions using the organocopper reagents with vinyl and
The invention relates to compounds of formulae I(a)-I(d):
and pharmaceutically acceptable derivatives thereof, compositions comprising an effective amount of a compound of formulae I(a)-I(d) or a pharmaceutically acceptable derivative thereof, and methods for treating or preventing a condition such as pain, UI, an ulcer, IBD and IBS, comprising administering to an animal in need thereof an effective amount of a compound of formulae I(a)-I(d) or a pharmaceutically acceptable derivative thereof.
Vinyl Esters of Isononanoic Acid Starting from 2-Ethyl Hexanol, Methods for the Production Thereof and Use Thereof
申请人:Oxea Gmbh
公开号:US20150166456A1
公开(公告)日:2015-06-18
Process for preparing the vinyl ester of isononanoic acid starting out from 2-ethylhexanol, characterized in that (a) 2-ethylhexanol is dehydrated in the presence of a catalyst to form octene; (b) the octene obtained in step a) is converted into an isononanoic acid having one more carbon atom; and (c) the isononanoic acid obtained in step b) is converted into the corresponding vinyl ester.
Method for Producing Isononanoic Acids from 2-Ethyl Hexanol
申请人:Oxea GmbH
公开号:US20150191410A1
公开(公告)日:2015-07-09
Process for preparing isononanoic acid proceeding from 2-ethylhexanol, characterized in that (a) 2-ethylhexanol is dehydrated to octene in the presence of a catalyst; (b) the octene obtained in step a) is reacted in the presence of a transition metal compound of group VIII of the periodic table of the elements with carbon monoxide and hydrogen to give isononanal; and (c) the isononanal obtained in step b) is oxidized to isononanoic acid.