Abstract: Process for the preparation of aryldimethyl(3-arylpropyl)silanes by a route comprising hydrosilylation followed by a modified Grignard reaction.

Abstract: The present invention relates to a process for the preparation of compounds of the formula I ##STR1## where X is CH.dbd.CH, N.dbd.CH, CH.dbd.N or S,R.sup.1 and R.sup.2 independently of one another are H, halogen, alkyl, alkoxy, alkylthio, haloalkyl, haloalkoxy, haloalkylthio or the bivalent methylenedioxy group,R.sup.3 is a radical of the formulae (A), (B) or (C) ##STR2## where R.sup.4 and R.sup.5 independently of one another are H, halogen, alkyl, alkoxy or a radical of the formula (D) ##STR3## in which R.sup.6 is H or halogen andY is CH.sub.2, O or S, andm, n, o, p and q are 0, 1, or 2, which comprises reacting a compound of the formula IIH.sub.2 C.dbd.CH--CH.sub.2 --R.sup.3 (II)where R.sup.3 is as defined in formula I, with dichloromethylsilane in the presence of a catalyst suitable for hydrosilylation reactions, and reacting the resulting intermediate of the formula III ##STR4## where R.sup.

Abstract: Pesticides containing at least one compound of the formula I ##STR1## where M denotes carbon or silicon,X denotes CH.sub.2, O, S, NR.sup.6,R.sup.1 denotes (C.sub.2 -C.sub.18)alkyl, (C.sub.5 -C.sub.7)cycloalkyl, (C.sub.2 -C.sub.8)alkenyl, phenyl, naphthyl, pyridyl, pyrimidyl, pyridazinyl, pyrazinyl, 1,2,4-triazinyl or 1,2,4,5-tetrazinyl, it being possible for all these substituents to be monosubstituted or polysubstituted,R.sup.2, R.sup.3 independently of one another denote (C.sub.1 -C.sub.3)alkyl, (C.sub.2 -C.sub.8)alkenyl or phenyl, or R.sup.2 and R.sup.3 denote an alkylene chain which--together with the quaternary central atom (M)--form an unsubstituted or fluorine-substituted ring having four to six ring members (where M=Si) or having three to six ring members (where M=C),R.sup.4 denotes --H, --CN, --CCl.sub.3, --C.tbd.CH, (C.sub.1 -C.sub.4)alkyl, F, ##STR2## R.sup.5 denotes pyridyl, furyl or thienyl, each of which can be substituted, phthalimidyl, di(C.sub.1 -C.sub.

Abstract: Azaneophyl and silazaneophyl sulfides, processes for their preparation, agents containing them, and their use as pesticidesCompounds of the formula I, their optical isomers and mixtures thereof ##STR1## where M denotes C or Si,R.sup.1 denotes unsubstituted or substituted pyridyl, unsubstituted or substituted pyrimidyl, andwhen M=C-- denotes unsubstituted or substituted pyridazinyl, unsubstituted or substituted pyrazinyl, unsubstituted or substituted 1,2,4-triazinyl, unsubstituted or substituted 1,2,4,5-tetrazinyl,R.sup.2, R.sup.3 independently of one another denote alkyl, alkenyl, haloalkyl, phenyl, or R.sup.2 and R.sup.3 denote an alkylene chain which--together with the quaternary central atom (M)--form an unsubstituted or fluorine-substituted ring having four to six ring members (when M=Si) or having three to six ring members (when M=C),R.sup.4 denotes H, F, --CN, --CCl.sub.3, --C.dbd.CH, (C.sub.1 -C.sub.4)alkyl, ##STR2## R.sup.

Abstract: The present invention relates to a process for the preparation of compounds of the formula I ##STR1## in which Hal denotes F, Cl, Br or I; X denoted O, S or CH.sub.2 ; Y denotes CH or N; R.sup.1 denotes H or (C.sub.1 -C.sub.4 -alkyl; R.sup.2 denotes H, F, Cl or Br and R.sup.3 denotes H, F, Cl, Br, (C.sub.1 -C.sub.4)alkyl or (C.sub.1 -C.sub.4)alkoxy, which comprises reacting a compound of the formula II ##STR2## in which aryl stands for an unsubstituted or substituted phenyl, naphthyl or thienyl radical of the formulae (A), (B) or (C) ##STR3## in which R.sup.4, R.sup.5 and R.sup.6 independently of each other denote H, alkyl, alkoxy, alkylthio, dialkylamino, phenoxy, phenylthio or phenyl and m, n and o independently of each denote the values 0, 1 or 2, and X, Y, R.sup.1, R.sup.2 and R.sup.3 are as defined in formula I,with a halogen or a halogen compound of the formula IIIHal.sub.p --Z.sub.q (III)in which Z denotes F, Cl, Br, I, H, PHal.sub.4 or SO.sub.

Abstract: Azaneophyl and silazaneophyl sulfides, processes for their preparation, agents containing them, and their use as pesticides.Compounds of the formula I, their optical isomers and mixtures thereof ##STR1## where M denotes C or Si,R.sup.1 denotes unsubstituted or substituted pyridyl, unsubstituted or substituted pyrimidyl, andwhen M=C- denotes unsubstituted or substituted pyridazinyl, unsubstituted or substituted pyrazinyl, unsubstituted or substituted 1,2,4-triazinyl, unsubstituted or substituted 1,2,4,5-tetrazinyl,R.sup.2, R.sup.3 independently or one another denote alkyl, alkenyl, haloalkyl, phenyl, or R.sup.2 and R.sup.3 denote an alkylene chain which - together with the quaternary central atom (M) - form an unsubstituted or fluorine-substituted ring having four to six ring members (when M=Si) or having three to six ring members (when M=C),R.sup.4 denotes H, F, --CN, --CCl.sub.3, --C.dbd.CH, (C.sub.1 -C.sub.4)alkyl, ##STR2## R.sup.

Abstract: New propene derivatives as intermediates for the preparation of pesticidal silane derivatives. Compounds of the formula ##STR1## wherein R.sup.4 is H, R.sup.5 is a radical of the formula ##STR2## and R.sup.17 is H or halogen are useful intermediates for the preparation of pesticidal silane derivatives.

Abstract: Compounds of the formula (I) and their stereoisomers ##STR1## wherein A, B, C' and D independently of one another denote CH or N, in which at least one of the symbols A, B, C' or D must correspond to a nitrogen atom,X denotes CH.sub.2 or oxygen,R.sup.1 denotes a radical bonded to a carbon atom from the series comprising H, trialkylsilyl, halogen, nitro, cyano, alkenyl, alkynyl, amino, cycloalkyl, phenyl, phenxy, alkoxy, alkenyloxy, alkynyloxy, hydroxycarbonyl, alkylthio, cycloalkyloxy, alkylcarbonyl, alkoxycarbonyl, alkenyloxycarbonyl, alkynyloxycarbonyl, halogenoalkyl, alkoxyalkyl, halogenoalkoxy, halogenoalkylthio, halogenoalkoxyalkyl, alkylthioalkyl, alkoxyalkoxy, halogenoalkoxyalkoxy, alkenyloxyalkoxy, halogenoalkenyloxy, alkoxyalkylthio, alkylthioalkoxy, alkylthioalkylthio, halogenoalkoxycarbonyl, halogenoalkenyloxycarbonyl or dialkylamino or two radicals R.sup.1 when they are positioned ortho to one another together denote a methylenedioxy, ethylenedioxy or alkylene radical,R.sup.2 and R.sup.

Abstract: The present invention relates to a process for the preparation of compounds of the formula I ##STR1## in which R.sup.1 denotes H, halogen, (C.sub.1 -C.sub.4)-alkyl or (C.sub.1 -C.sub.4)-alkoxy andR.sup.2 denotes H, halogen, (C.sub.1 -C.sub.4)-alkyl, (C.sub.1 -C.sub.4)-alkyl-thio, (C.sub.1 -C.sub.4)-alkoxy or the bivalent group 3,4-0-CH.sub.2 -O, comprising reacting a compound of the formula II ##STR2## in which X denotes halogen and R.sup.2 has the meaning as in formula I, in the presence of a copper catalyst with an alkali metal phenolate or alkaline earth metal phenolate of the formula III ##STR3## in which M denotes an alkali metal or an alkaline earth metal and R.sup.1 has the meaning as in formula I.

Abstract: The compounds of the formula (I) ##STR1## in which X denotes CH.sub.2 or O,R.sup.1 denotes (subst.) pyridyl or (subst.) pyrimidyl,R.sup.2 and R.sup.3 denote alkyl or alkenyl or R.sup.2 and R.sup.3 denote an alkylene chain,R.sup.4 denotes --H, --CN, --CCl.sub.3, --C.tbd.CH, alkyl, F, or --C(S)--NH.sub.2,R.sup.5 denotes pyridyl, furyl, thienyl, phthalimidyl, di(C.sub.1 -C.sub.4)alkylmaleimidyl, thiophthalimidyl, dihydrophthalimidyl or tetrahydrophthalimidyl, which may all be substituted, or substituted phenyl, orR.sup.4 and R.sup.5 --together with the carbon atom bridging them--denote an optionally substituted indanyl, cyclopentenoyl or cyclopentenyl radical,have advantageous insecticidal, acaricidal and nematocidal properties.