| abstract |
Process for the separation of acids from reaction mixtures by means of an auxiliary base, characterized in that the auxiliary base b) forms a salt with the acid, which is liquid at temperatures at which the product of value does not decompose during the separation of the liquid salt and c) the salt of the auxiliary base with the product of value or the dissolution of the product of value in a suitable solvent forms two non-miscible liquid phases, the acid being released during the reaction of a phosphorylation for the production of phosphines , phosphonic acid esters, phosphine acid esters (phosphites), phosphonic acid esters, phosphonic acid halides, phosphonic acid amides, phosphonous acid esters (phosphonites), phosphonous acid amides, phosphonous acid halides, acid esters phosphoric, phosphoric acid diester halides, phosphoric acid diester amides, phosphoric acid ester dihalogenides, di phosphoric acid ester amides, phosphorous acid esters (phosphites), phosphorous acid diester halides, phosphorous acid diester amides, phosphorous acid ester dihalogenides, and a base corresponding to the formula (Ie) is used, wherein R1 is selected from methyl, ethyl, n-propyl, n-butyl, n-pentyl, n-octyl, 2-hydroxyethyl or 2-cyanoethyl and R2 to R4 independently mean hydrogen, methyl or ethyl. |