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公开(公告)号：DK126281A
公开(公告)日：1981-09-23
申请号：DK126281
申请日：1981-03-20
Applicant: HOECHST AG
Abstract: The invention relates to a process wherein an alcohol and/or phenol is reacted with phosphorus pentasulfide in the presence of a catalyst which is selected from (a) phosphonium salts of the general formula: I (b) ammonium salts of the general formula: II (c) phosphine oxides of the general formula: III (d) phosphine sulfides of the general formula: IV (e) phosphinic acid derivatives of the general formula: V In formulae I through V, the substituents R1, R2, R3 and R4 each stand for identical or different alkyl-, aryl-, alkaryl- or aralkyl- groups having from 1 to 22 carbon atoms. A stands for an inorganic or organic acid, and X and Y, respectively, stand for both oxygen and sulfur, and M stands for a monovalent metal or oxygen.
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公开(公告)号：DK372279A
公开(公告)日：1980-03-08
申请号：DK372279
申请日：1979-09-06
Applicant: HOECHST AG
Inventor： GROSSE J
Abstract: The invention relates to an improved process for making amine salts of acid O,S-dialkylthiophosphoric acid esters of the general formula (I) (I) in which R1 stands for the ammonium ion of primary or secondary aliphatic, cycloaliphatic or aromatic amines or of a heterocyclic nitrogen base and R2 and R3 each stand for an alkyl group by subjecting an O,O,S-trialkyl-thiophosphate to partial dealkylation and forming the salt of the dealkylated product by treatment with an amine corresponding to the ammonium ion R1. In the improved process an O,O,S-trialkylthiophosphate of the general formula (II) (II) in which R2 and R3 have the meanings given above, is mixed with at least stoechiometric proportions of water and an amine corresponding to the ammonium ion R1, the resulting mixture is reacted, with agitation, over a period of about 3 to 8 hours at a temperature within the range 0 DEG to 120 DEG C., and the amine salt of the general formula (I) is separated from the reaction mixture.
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