Hoechst Aktiengesellschaft

Clariant Corporation

Celanese Gmbh

Agrevo UK Limited

Dieter Regnat

Hans-Jerg Kleiner

Christoph Naumann

Helmut Bahrmann

Gerhard Pfahler

Heinz-Werner Kleemann

Ahmed M Tafesh

Adalbert Wagner

Manfred Bohshar

Geoffrey Gower Briggs

Hans-Peter Jende

Herbert Buschhaus

Martin Mach

Horst Ro/ Schert

Fungicidal compositions

The hydrolysis stability of trivalent organic phosphorus compounds of the formula I ##STR1## used as stabilizers for thermoplastics is improved if these compounds are treated with 0.01 to 5% by weight of an oxide, a carbonate, a hydroxide, a bicarbonate or a carboxylate of a metal of groups 1a, 2a, 2b and 7b of the periodic table of the elements. The storage stability and the ease of handling are increased and the discoloration of the stabilized polymers is reduced.

Process for the preparation of hyrolysis-stable trivalent phosphorus

The present invention relates to compounds of the formula (I) ##STR1## where R.sup.1 is H or an alkyl radical having from 1 to 12 carbon atoms, R.sup.2 is a straight-chain alkylene radical having from 1 to 8 carbon atoms, an oxygen-containing alkylene radical having from 2 to 4 carbon atoms, a radical of the formula (II) or (III) ##STR2## or a cycloalkylene radical having from 3 to 10 carbon atoms, R.sup.3 is an alkyl radical having from 1 to 25 carbon atoms or an aryl radical having from 6 to 10 carbon atoms, A is a radical --COO.sup.- or --SO.sub.3 .sup.- and x=0, y=1, m=1 and n=1, or x=1, y=1, m=(1 or 2) and n=(1 or 2), or, if R.sup.2 is a radical of the formula (II) or (III), x=1, y=0, m=(0 or 1) and n=(0 or 1), and also a process for their preparation.

Substituted diphenyldiphosphines and a process for their preparation

The present invention relates to compounds of the formula (I) ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 are identical or different and, independently of one another, are hydrogen, an alkyl or alkoxy group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, or R.sup.1 and R.sup.2 including the respective carbon atoms bound to them form a ring containing 6 carbon atoms, m and n independently of one another are 0 or 1 and (m+n) is 1 or 2, and R is an unsubstituted phenyl or naphthyl radical, or a phenyl or naphthyl radical substituted by an alkyl group having 1 to 4 carbon atoms or an amino or dialkylamino group containing a total of 2 to 8 carbon atoms, and to a process for their preparation.

Bis ethers containing a 2,2'-biaryl radical and a process for their

The present invention relates to a process for the preparation of aldehydes, which comprises reacting an olefinic compound having 2 to 20 carbon atoms with carbon monoxide and hydrogen, in the presence or absence of a solvent, in the presence of a catalyst comprising rhodium and a compound or a mixture of compounds of the formula (I) ##STR1## in which R.sup.1 is H or an alkyl radical having 1 to 12 carbon atoms, R.sup.2 is a straight-chain alkylene radical having 1 to 8 carbon atoms, an oxygen-containing alkylene radical having 2 to 4 carbon atoms, a radical of the formula (II) or (III) ##STR2## or a cycloalkylene radical having 3 to 10 carbon atoms, R.sup.3 is an alkyl radical having 1 to 25 carbon atoms or an aryl radical having 6 to 10 carbon atoms, A is a radical --COO.sup.- or --SO.sub.3.sup.- and x=0, y=1, m=1 and n=1, or x=0.1, y=1, m=(1 or 2) and n=(1 or 2), or, if R.sup.2 is a radical of the formula (II) or (III), x=1, y=0, m=(0 or 1) and n=(0 or 1), at a temperature from 50.degree. to 190.degree. C. and under a pressure from 0.1 to 45 MPa, and separating the reaction product off from the catalyst.

Process for the preparation of aldehydes by means of a catalyst system

The present invention relates to a hydroxybiarylphosphines of the formula ##STR1## in which Ar-Ar is biphenyl, 1-phenyinaphthyl or 1,1'-binaphthyl, R.sup.1 and R.sup.2 are identical or different and are F or alkoxy having in each case 1 to 8 carbon atoms or are substituted or unsubstituted aryl, a and b are identical or different and are an integer from 0 to 4, in which R.sup.3 and R.sup.4 are identical or different and are alkyl having 1 to 8 carbon atoms, cycloalkyl having 4 to 10 carbon atoms, alkaryl having 7 to 9 carbon atoms, Ar.sup.3 --(R.sup.5).sub.n, in which A.sup.3 is an aryl radical having 6 to 10 carbon atoms, R.sup.5 is CF.sub.3, dialkylamino having a total of 2 to 8 carbon atoms or --CH.sub.2 N(alkyl).sub.2 having 1 to 3 carbon atoms per alkyl and n is an integer from 0 to 5, or --R.sup.3 --R.sup.4 -- forms a chain of 3 to 5 members to which one or two aromatic rings or ring systems having 6 to 10 carbon atoms are optionally fused together with the P atom, forms a ring having 4 to 6 members, with the proviso that Ar.sup.3 --(R.sup.5).sub.n is not phenyl or a phenyl substituted by halogen, alkyl or alkoxy each having 1 to 8 carbon atoms, if Ar-Ar is bipohenyl or 1,1'-binaphthyl and a.dbd.b.dbd.0 and R.sup.3 and R.sup.4 are identical in each case.

Process for the preparation of hydroxybiarylphosphines and novel

The present invention relates to a process for preparing 2,2'-bis(diphenylphosphinylmethyl)-1,1'-binaphthyls by reacting a reaction mixture prepared in a solvent by reaction of 2,2'-dimethyl-1,1'-binaphthyl with a brominating agent to produce a mixture comprising 2,2'-bis(bromomethyl)-1,1'-binaphthyl and further brominated binaphthyls and optionally further comprising unreacted brominating agent, reacted brominating agent and solvent, with an alkyl diphenylphosphinite of the formula RO--P(Ph--(R').sub.n).sub.2, where R is an alkyl radical having from 1 to 5 carbon atoms, Ph is phenyl, R' is an alkyl radical having from 1 to 4 carbon atoms, CF.sub.3, fluorine, chlorine or bromine and n is 0, 1 or 2, at from 70.degree. to 180.degree. C. optionally in the presence of a further solvent.

Process for preparing

Aromatic bromomethyl compounds play a major role in the synthesis of active substances. They can be obtained in particularly pure form by the free-radical bromination of aromatic methyl compounds in the solvent chlorobenzene.

Process for the preparation of aromatic bromomethyl compounds

Phosphepinium Salts Thereof The present invention relates to phosphonium salts of the formula (I) ##STR1## in which Ar--Ar is a biphenyl radical, a 1-phenylnaphthyl radical or a 1,1'-binaphthyl radical, each CH.sub.2 group is arranged in the ortho position to the Ar--Ar bond, R is F, an alkyl radical or an alkoxy radical respectively having 1 to 8 carbon atoms, n is an integer from 0 to 4, R.sup.1 and R.sup.2 are identical or different and, independently of each other, are an alkyl radical having 1 to 10 carbon atoms, a cycloaliphatic radical having 5 to 10 carbon atoms, or are a radical Ar.sup.1 --(R.sup.3).sub.m, where Ar.sup.1 is a phenyl or naphthyl radical, R.sup.3 is F, Cl, CF.sub.3, SO.sub.3 H, SO.sub.3 Me (Me.dbd.Li, Na or K), a dialkylamino radical having 2 to 8 carbon atoms, an alkyl radical or an alkoxy radical respectively having 1 to 8 carbon atoms and m is an integer from 0 to 5, or R.sup.1 and R.sup.2 together with the P atom form a ring having 4 to 8 members to which may be fused one or two aromatic rings or ring systems including 6 to 10 carbon atoms and X.sup.- is a monovalent anion or the equivalent of a polyvalent anion of a mineral acid, carboxylic acid, sulfonic acid or an alcohol. The invention further relates to a process for the preparation of the phosphonium salts and use thereof.

Phosphepinium salts

The present invention relates to oxaphosphorins of the formula ##STR1## where Ar-Ar is 1-phenylnaphthyl or 1,1'-binaphthyl, R.sup.1 and R.sup.2 are identical or different and are F, Cl, alkyl or alkoxy each having from I to 8 carbon atoms or substituted or unsubstituted aryl, a and b are identical or different and are each an integer from 0 to 4, or Ar-Ar is biphenyl, R.sup.1 and R.sup.2 are identical or different and are substituted or unsubstituted aryl, a and b are as defined above, but a+b.gtoreq.1, X is Cl or Br and the Ar-P and Ar-O bonds are each arranged in the ortho position to the Ar-Ar bond. The invention further relates to a process for preparing these oxaphosphorins.

Oxaphosphorins and a process for their preparation

Phosphines of the formula (I) and the preparation of these phosphines ##STR1## where Ar--Ar is a biphenyl radical, a 1-phenylnaphthyl radical or a 1,1'-binaphthyl radical, the CH.sub.2 group and the CH.sub.3 radical are each in the ortho position to the Ar--Ar bond, R is F, an alkyl radical or alkoxy radical each having from 1 to 8 carbon atoms, n is an integer from 0 to 4, R.sup.1 and R.sup.2 independently of one another, are an alkyl radical having from 1 to 10 carbon atoms, a cycloaliphatic radical having from 5 to 10 carbon atoms, or a radical Ar.sup.1 -(R.sup.3).sub.m, where Ar.sup.1 is a phenyl or naphthyl radical, R.sup.3 is F, Cl, CF.sub.3, SO.sub.3 H, SO.sub.3 Me (Me=Li, Na or K), a dialkylamino radical having from 2 to 8 carbon atoms, an alkyl radical or alkoxy radical each having from 1 to 8 carbon atoms and m is an integer from 0 to 5, or R.sup.1 and R.sup.2 together with the phosphorus atom form a 4-membered to 8-membered ring to which can be fused.

Compounds of the phosphine group, their preparation and their use

A process for preparing 4-bromomethyl-3-methoxybenzoic esters of the formula ##STR1## entails the corresponding 4-methyl-3-methoxybenzoic esters being reacted in chlorobenzene or an ester as solvent with N-bromosuccinimide with exposure to light of wavelength 10.sup.-5 to 10.sup.-8 m at -10.degree. to 120.degree. C.

Process for preparing 4-bromomethyl-3-methoxy-benzoic esters

A diphosphine of the formula (I) ##STR1## in which Ar--Ar is a biphenyl radical, a 1-phenyl-naphthyl radical or a 1,1'-binaphthyl radical, the CH.sub.2 groups am each located in the ortho-position relative to the Ar--Ar bond, R is F or an alkyl radical or alkoxy radical having in each case 1 to 8 carbon atoms, n is an integer from 0 to 4, the radicals PR.sup.1 R.sup.2 and PR.sup.3 R.sup.4 differ from one another, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently of one another are each an alkyl radical having 1 to 10 carbon atoms, a cycloaliphatic radical having 5 to 10 carbon atoms, or a radical Ar.sup.1 --(R.sup.5).sub.m, in which AR.sup.1 is a phenyl radical, R.sup.5 is F, CF.sub.3, or an alkyl radical having 1 to 4 carbon atoms and m is 0 to 1, or R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently of one another and including the particular P atom to which they are bonded, form a ring having 4 to 8 members, onto which one or two aromatic rings or ring systems containing 6 to 10 carbon atoms are optionally fused. The invention furthermore relates to a process for the preparation of these diphosphines.

Diphosphines and process for their preparation

The present invention relates to sulfonated diphosphines of the formula (I) ##STR1## where M is hydrogen, ammonium, a monovalent metal or the equivalent of a polyvalent metal, a, b, c and d are each 0 or 1, with the proviso that a+b+c+d is an integer from 1 to 4, Ar is an m-(MSO.sub.3)--C.sub.6 H.sub.4 radical and M is as defined above, n is 0, 1 or 2, Ph is a phenyl radical, R.sup.1 and R.sup.2 are identical or different and are each an alkyl radical having from 1 to 10 carbon atoms or a cycloaliphatic radical having from 5 to 10 carbon atoms in the ring, and a process for their preparation.

Sulfonated diphosphines and a process for their preparation

The invention relates to bis-phosphepines of the formula (I): ##STR1## where: Ar--Ar is biphenyl, 1,1'-binaphthyl or 1-phenylnaphthyl,

Growing community of inventors

Eppstein, Germany

Dieter Regnat