Abstract: A process for the preparation of monomeric polyvinyl compounds and/or oligomers thereof comprising:(i) preactivating a supported rhenium oxide catalyst with a hydrocarbyl metal compound; and(ii) reacting, under metathesis reaction conditions, norbornene or one or more substituted norbornenes, or mixtures thereof, with ethylene in the presence of the activated supported catalyst of step (i).

Abstract: Osmium-catalyzed methods of addition to an olefin are discussed. In the method of asymmetric dihydroxylation of the present invention, an olefin, a chiral ligand, an organic solvent, an aqueous solution, a base, a ferricyanide salt and an osmium-containing compound are combined. The chiral ligand is an alkaloid or alkaloid derivative linked to an organic substituent of at least 300 daltons molecular weight through a planar aromatic spacer group. The organic substituent can be another alkaloid or alkaloid derivative. With the described chiral ligands, asymmetric dihydroxylation of olefins with high yields and enantiomeric excesses are achieved.

Abstract: Novel silane compound, alkoxy cyclopentyl dimethoxysilane, is prepared by reacting cyclopentyl trihalosilane with ROH and then with methanol, or by reacting cyclopentyl trimethoxysilane with ROH, wherein alkyl in the alkoxy or R in ROH stands for an organic group selected from the group consisting of sec-butyl, tert-amyl, cyclopentyl, oxa-3-cyclopentyl, cyclohexyl and 2-isopropyl-5-methyl cyclohexyl groups. The silane compounds are useful as a catalytic component for olefin polymerization and as a silane coupling agent.

Abstract: An aqueous glass fiber sizing composition acetate file former and an effective amount of a lubricant additive having the formula: ##STR1## where R is an alkyl or alkenyl group of 6 to 20 carbons, A is a divalent organic--S--or--NH--group, R.sup.1 is an alkyl group of 1 to 4 carbons, m is or 1 and n is 0 to 10 with the proviso that when n is O, m is also O.

Abstract: Silicon and aluminum complexes having the following formula I, II or III: ##STR1## wherein x is 0 or 1, T is H or ##STR2## each R is independently selected from the group consisting of H, OH, C.sub.1-6 alkyl, C.sub.1-6 alkoxy, C.sub.2-6 alkene, C.sub.6-12 aryl, C.sub.1-6 hydroxyalkyl, C.sub.1-6 thioalkyl, C.sub.2-12 alkoxyalkyl, C.sub.3-20 heteroaromatic, and combinations thereof, wherein R may further contain one or more atoms of a non-carbon element such as Si, Ge, Sn, P, and the like; Y is a cation, and Z is a multivalent cation, are prepared by reacting silica or alumina with a diol, in the presence of a base, while removing water formed during the reaction. Methods for producing such complexes starting with silica or alumina, and methods for converting such complexes into other silicon or aluminum-containing compounds, are disclosed.

Abstract: Compositions and a method of delivering a humectant to a surface such as skin by forming a reaction product of the humectant with an organosilicon compound. The reaction product is applied to the skin surface and contacted with moisture which causes the reaction product to undergo hydrolysis on the skin surface. This releases free humectant onto the skin surface and the silanol functional organosilicon compound formed as a result of the hydrolysis can be utilized on the skin surface as a durable water repellent and softening ingredient for the skin.

Abstract: An organosilicone-treated silica obtained by treating(A) a silica powder having a specific surface area of at least 50 m.sup.2 /g with(B) a triorgano(1-alkoxyvinyloxy)silane having the formula (I): ##STR1## wherein R.sup.1 is a monovalent hydrocarbon group or an ether linkage-containing organic group, and R.sup.2 are each a substituted or unsubstituted monovalent hydrocarbon group or an ether linkage-containing organic group. The invention also discloses an organopolysiloxane composition containing the organosilicone-treated silica and a process preparing the composition. The organosilicone-treated silica is of high quality, containing no substance with disagreeable smell or corrosiveness which has been by-produced heretofore. Hence, the composition containing the silica is free from pseudocrosslinking such as structuring or crepe hardening.

Abstract: A cycloalkoxysilane, having utility as an electron donor in the Ziegler-Natta polymerization of olefinic monomers, of the structure(R'O).sub.x (R').sub.y Si(OR).sub.4-x-ywherein R is independently selected from the group consisting of alkyl radicals having 1 to 5 carbon atoms and acyl radicals having 2 to 5 carbon atoms, R' is independently selected from the group consisting of a cyclopentyl radical, a cyclohexyl radical a cycloheptyl radical, and substituted radicals thereof, x is 1, 2, 3 or 4 and y is 0, 1 or 2.

Abstract: The invention relates to new cleavable surface-active silane derivatives of the formula ##STR1## in which R.sub.1, n, R.sub.2, R.sub.3, X, m and R.sub.4 have the meaning given in the description, and furthermore processes for the preparation of these silane derivatives and the use of these compounds as surfactants.

Abstract: A process is described for the improved synthesis of the optically pure C.sub.10 -C.sub.18 fragment of the macrolide structure of the immunosuppressant FK-506. This compound is also useful as an intermediate for preparing FK-506 derivatives.

Abstract: Conjugated diene compounds of the general formula: ##STR1## which are industrially advantageous intermediates for preparing sarcophytol A useful as an anticarcinogenic promotor or antitumor agent are provided.

Abstract: Novel silane compounds, tert.-butoxy cyclopentyl dimethoxysilane and isopropoxy cyclopentyl dimethoxysilane, are prepared by reacting cyclopentyl trihalosilane with ROH (where R stands for tert.-butyl or isopropyl group) and then with methanol, or by reacting cyclopentyl trimethoxysilane with ROH. The silane compounds are useful as a catlaytic component for olefin polymerization and as a silane coupling agent.

Abstract: Several thexyl trialkoxy silanes as a novel class of organosilicon compounds were synthesized by the reaction of dehydrochlorination condensation between thexyl trichlorosilane and an alcohol, e.g., methyl, ethyl, isopropyl and isobutyl alcohols, and characterized by the analytical data. These compounds are useful as an intermediate in the synthetic preparation of other organosilicon compounds, starting material of various silicones, surface-treatment agent of inorganic materials and additive in complex catalysts.

Abstract: Thexyl (C.sub.1 -C.sub.4) alkyl dialkoxy silanes are proposed as a class of novel organosilicon compounds such as thexyl methyl dimethoxy silane and thexyl n-butyl dimethoxy silane. These silane compounds can be synthesized by several different routes. For example, thexyl methyl dimethoxy silane is prepared starting from methyl phenyl chlorosilane which is subjected to the hydrosilation reaction with 2,3-dimethyl-2-butene to introduce a thexyl group and the compound is converted by the reaction with hydrogen chloride into thexyl methyl dichlorosilane which is methoxylated by the reaction with methyl alcohol.

Abstract: Cyclobutane derivatives of the formulas ##STR1## wherein P is a hydroxy protecting group and X is a leaving group are useful intermediates in the preparation of antiviral compounds.

Abstract: The silicon-containing phenoxy ethers are of the formula III: ##STR1## wherein R.sup.1 and R.sup.2 which may be the same or different are selected from H, --R.sup.3 --X, aliphatic hydrocarbyl having 1-6 carbon atoms or aryl, or substituted derivatives thereof, provided that not more than one of R.sup.1 and R.sup.2 is H;R.sup.3 is a divalent C.sub.1 -C.sub.30 aliphatic and/or aromatic hydrocarbyl group which may optionally be substituted, or interrupted, by a hetero atom;R.sup.4 and R.sup.5 which may be the same or different are H, ##STR2## or an ortho para directing activating group for aromatic electrophilic substitution, other than an amine;and X is a reactive functional group capable of undergoing an acid-catalyzed electrophilic aromatic substitution reaction with a phenol, for example an aldehyde group. They can be polymerized to produce silicone-modified polymers of the phenol-aldehyde type without the use of free aldehyde.

Abstract: New dienoxysilanes of the general formula: ##STR1## and new .alpha.-halo .alpha.-ethylene aldehydes to which they give access, having the general formula: ##STR2## These new compounds constitute important synthesis intermediates opening a new path for access to macrolides such as pyrenophorine, norpyrenophorine or vermiculine.

Abstract: Silicon and aluminum complexes having the following formula: ##STR1## wherein x is 0 or 1, T is H or ##STR2## each R is independently selected from the group consisting of H, OH, C.sub.1-6 alkyl, C.sub.1-6 alkoxy, C.sub.2-6 alkene, C.sub.6-12 aryl, C.sub.1-6 hydroxyalkyl, C.sub.1-6 thioalkyl, C.sub.2-12 alkoxyalkyl, C.sub.3-20 heteroaromatic, and combinations thereof, wherein R may further contain one or more atoms of a non-carbon element such as Si, Ge, Sn, P, and the like; and Y is a cation, are prepared by reacting silica or alumina with a diol, in the presence of a base, while removing water formed during the reaction. Methods for producing such complexes starting with silica or alumina, and methods for converting such complexes into other silicon or aluminum-containing compounds, are disclosed.

Abstract: An organosilicon compound having the general formula (I): ##STR1## wherein R.sup.1 represents the methyl group or the ethyl group, R.sup.2 represents an alkyl group having from 1 to 4 carbon atoms, and n represents an integer of from 1 to 3. This compound is useful in preparing room temperature vulcanizable organopolisiloxane compositions which have good storage stability, and release no smelly or corrosive condensation by-product on curing.

Abstract: Difunctional halo silicon amide compounds are prepared by cleaving the nitrogen-silicon bond in a nitrogen-silicon heterocycle with a reactive halide. The reaction is straight forward with no intermediates or byproducts. The halo functionality is capable of capping any SiOH group. When the other functionality is an acrylamide, the capped entity may be polymerized or crosslinked by free radical initiators of the acrylamide functionality thereby producing useful products such as paper release coatings and photoresists.

Abstract: A methylalkoxy-methylalkyl cyclosiloxane copolymer having the formula(OSiROR).sub.d (OSiRR').sub.ewhere R is an alkyl radical having one to three carbon atoms; R' is the alkyl radical (CH.sub.2).sub.c R; c is an integer having a value of from 1 to 17; d is an integer having a value of from 3 to 10; and e is an integer having a value of from one to seven.

Abstract: Difunctional halo silicon amide compounds are prepared by cleaving the nitrogen-silicon bond in a nitrogen-silicon heterocycle with a reactive halide. The reaction is straight forward with no intermediates or byproducts. The halo functionality is capable of capping any SiOH group. When the other functionality is an acrylamide, the capped entity may be polymerized or crosslinked by free radical initiators of the acrylamide functionality thereby producing useful products such as paper release coatings and photoresists.

Abstract: Novel silanes having sterically hindered aminohydrocarbyl groups of the formula X.sub.3 SiRCR'.sub.2 NR".sub.2 and having utility as coupling agents and a process for their preparation are described.

Abstract: A method of preparing pure 3-butenyl triorgano oxysilanes, the intermediate products 3,4-dichlorobutyl triorgano oxysilanes and the use of the final products in rubber mixtures reinforced with silicic acid and vulcanizable with peroxides. 3,4-dichlorobutene-1 and trichlorosilane are used as initial products.

Abstract: The present invention relates to a process for the production of mixtures of novel organofunctional alkoxysilanes by the reaction of mixtures of certain substituted organic halides and chlorosilanes with molten sodium dispersed in alkoxysilanes. In the described process, the substituted organic groups of the organic halide replace alkoxy groups of the alkoxysilanes. Also claimed, are organofunctional alkoxysilanes prepared by the claimed process.

Abstract: Compounds, and a process for their preparation, have the formula ##STR1## or corresponding salts thereof wherein R represents a group of the formula ##STR2## wherein R.sub.1 represents oxazolinyl, --C.tbd.N, --CH.sub.2 OR.sub.2 or ##STR3## These compounds in the form of pharmaceutical or cosmetic compositions are useful for the treatment of keratinization disorders.

Abstract: Difunctional halo silicon amide compounds are prepared by cleaving the nitrogen-silicon bond in a nitrogen-silicon heterocycle with a reactive halide. The reaction is straight forward with no intermediates or byproducts. The halo functionality is capable of capping any SiOH group. When the other functionality is an acrylamide, the capped entity may be polymerized or crosslinked by free radical initiators of the acrylamide functionality thereby producing useful products such as paper release coatings and photoresists.

Abstract: A process is described for the improved synthesis of the optically pure C.sub.10 -C.sub.24 fragment of the macrolide structure of the immunosuppressant FK-506. This compound is also useful as an intermediate for preparing FK-506 derivatives.

Abstract: Novel methyl carbinol derivatives of Vitamin E and a method for their manufacture.

Abstract: A bisindenyl derivate of the formula I ##STR1## (M.sup.1 =Si or Ge, R.sup.6 and R.sup.7 =unsubstituted or substituted idenyl radical)is obtained in very good yield by reacting a compound of the formula II ##STR2## (X=halogen) with a compound of the formula III or IVR.sup.6 -M.sup.2 (III) R.sup.7 -M.sup.2 (IV)(M.sup.2 =alkali metal)if, in the reaction, compound III or IV is added slowly to compound II.Compound I is suitable as a starting material for the preparation of metallocene catalyst components.

Abstract: A process for the preparation of perfluoroalkyl compounds which comprises reacting a perfluoroalkyl-trimethylsilane of the general formula (CH.sub.3).sub.3 Si-C.sub.n F.sub.2n+1 (I), wherein the group C.sub.n F.sub.2n+1 represents a perfluoroalkyl group having from 1 to 6 carbon atoms, with a carbonyl compound of the general formula F.sup.1 --CO--R.sup.2 (II), wherein R.sup.1 represents a hydrocarbon group or hydrogen and R.sup.2 represents a hydrocarbon group, a perfluoroalkyl group or a perfluoroaryl group, but wherein R.sup.1 and R.sup.2 together may also be part of an alicyclic ring system, in the presence of a salt-like fluoride--which is at least partially soluble in the reaction medium--as a catalyst to yield a silylether of the formula ##STR1## and isolating this compound or hydrolyzing it to yield an alcohol of the formula IV ##STR2## The invention also relates to pentafluoroethyl trimethylsilane (CH.sub.3).sub.3 Si--CF.sub.2 CF.sub.3 and a process for the preparation of this compound.

Abstract: A process for producing a silane or siloxane compound containing at least one cycloalkyl ring by hydrogenation of a corresponding derivative containing at least one aromatic ring in the presence of a Raney nickel catalyst modified with chromium.

Abstract: A process for the manufacture of compounds of the general formula ##STR1## wherein R.sup.1 signifies hydroxy or an etherified hydroxy group, and of zeaxanthin by converting a compound of the general formula ##STR2## wherein R.sup.1 has the above significance, in an inert organic solvent into the acetylenide and reacting this with methyl vinyl ketone, reducing the alcoholate obtained or the alcohol (obtained after hydrolysis of the alcoholate) of the general formula ##STR3## wherein R.sup.1 has the above significance, and subsequently hydrolyzing to give the compound of formula IV and, if desired, converting the compound of formula IV obtained into zeaxanthin.

Abstract: A silicon compound represented by formula (I): ##STR1## wherein either one of R.sup.1 and R.sup.2 represents a vinyl group with the other representing a hydrogen atom; either one of R.sup.3 and R.sup.4 represents a vinyl group with the other representing a hydrogen atom; and R.sup.5, R.sup.6, and R.sup.7, which may be the same or different, each represents a substituted or unsubstituted monovalent hydrocarbon group, an alkoxy group or a halogen atom. The compound exhibits improved compatibility with polymerizable monomers or organic polymers and is useful as a crosslinking agent or modifier.

Abstract: 1-Phenyl-3-azabicyclo[3.1.1]-heptane-2,4-diones of the formula ##STR1## in which R.sub.1 represents hydrogen or a saturated or unsaturated, aliphatic, cycloaliphatic, cycloaliphatic-aliphatic, aromatic or aromatic-aliphatic hydrocarbon radical having up to and including 18, preferably up to and including 12, carbon atoms, R.sub.2 represents hydrogen, lower alkyl, sulpho or acyl, R.sub.3 represents hydrogen or lower alkyl and R.sub.4 represents hydrogen, lower alkyl, phenyl or phenyl substituted by --N(R.sub.2)(R.sub.3), and salts of these compounds, have valuable pharmacological properties, are effective as aromatase inhibitors and can therefore be used for the treatment of hormone-dependent diseases, especially mammary carcinoma.

Abstract: Benzocyclobutene-functionalized organosilanes, and a method of increasing adhesion between a polymer and an inorganic surface by using benzocyclobutene-functionalized organosilanes as adhesion aids.

Abstract: There are disclosed novel substituted o-phthalaldehydes of formula I ##STR1## wherein at least one of the substituents R.sub.1, R.sub.2, R.sub.3, R.sub.4 is Q(alkyl).sub.3, --CH.sub.2 --Q(alkyl).sub.3, --O--Q(alkyl).sub.3, --Q(aryl).sub.3 or --Q(alkylenearyl).sub.3, wherein Q is Si, Sn or Ge, the alkyl moieties contain 1 to 12 carbon atoms, the aryl groups contain 6 or 12 ring carbon atoms and the alkylene radicals contain 1 to 4 carbon atoms, and each of the remaining substituents R.sub.1 to R.sub.4 is a hydrogen or halogen atom or a cyano, nitro, carboxyl or hydroxyl group, a C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylthio or an alkoxycarbonyl group containing 1 to 4 carbon atoms in the alkoxy moiety.The novel o-phthalaldehydes can be polymerized to give polymers that can be used as photoresists.

Abstract: A process for the disproportionation of olefins comprising contacting said olefins under suitable reaction conditions with a neutral-carbene complex catalyst and then using anhydrous ammonia to effect separation of the catalyst and the organic products.

Abstract: This invention resides in a process for production of predominantly a 1,4-O-metallation product of a hydride of silicon, germanium, or tin with an .alpha.,.beta.-unsaturated carbonyl compound. The reaction involved takes place in the presence of a heterogeneous noncomplexed rhodium-containing catalyst. This invention also resides in 1,4-O-metallation compositions having perfluoroalkyl R groups on either side of the C.dbd.C bond of an enol ether or on the acetal side of the C.dbd.C bond of a ketene acetal.

Abstract: Novel O-silylated ketene acetals and enol ethers are prepared via the 1,4-hydrosilation of a hydrosilation composition selected from the group consisting of aminosilanes, siloxanes and alkylalkoxysilanes with an .alpha.,.beta.-unsaturated carbonyl in the presence of a rhodium catalyst.

Abstract: Disclosed is a process for the preparation of alpha-aryl and alpha-heteroaryl ketones useful as intermediates in the synthesis of various pharmaceutical and agricultural chemicals, which process operates according to the following reaction scheme: ##STR1##

Abstract: An extractive distillation process for recovering trimethoxysilane from a trimethoxysilane-methanol mixture is provided using as the extractive solvent tetramethoxysilane.

Abstract: The invention provides organosilane compounds of a novel class having one or two (phenyl dimethyl carbinyl) groups bonded to the silicon atom as represented by the general formula (PhMe.sub.2 C).sub.p R.sub.q X.sub.r Si, in which Ph is a phenyl group, Me is a methyl group, R is a monovalent hydrocarbon group selected from the class consisting of alkyl, alkenyl and aryl groups, X is a halogen atom or an alkoxy group, p is 1 or 2, q is zero, 1 or 2 and r is zero, 1, 2 or 3 with the proviso that p+q+r=4. The compound can be prepared by the reaction of a Grignard reagent PhMe.sub.2 C. MgY, in which Y is a halogen atom, with a silane compound represented by the general formula R.sub.q SiX.sub.4-q in an organic solvent.

Abstract: An improved method of preparing a glass release surface useful in the manufacture of anti-lacerative window assemblies is disclosed. The glass surface is treated with octadecyltriethoxysilane, and thereafter may be easily released from the polyurethane layer of an anti-lacerative window assembly. Use of the octadecyltriethoxysilane parting agent enables excellent optical properties to be imparted to the polyurethane layer.

Abstract: A method for the preparation of alkoxysilanes and alkoxysiloxanes from a silicate material, and for the further conversion to organosilanes and organosiloxanes. Methods for the preparation of silicate starting materials are also disclosed.

Abstract: Compounds of the general formula I are disclosed as useful intermediates in the preparation of prostanoids: ##STR1## wherein A represents O or H, OR.sup.z ;R.sup.z represents hydrogen or a protecting group;R.sup.x represents hydrogen or a protecting group; andR.sup.y represents halogen, a substituted thio group, di-substituted amino group, or a group of the formula R.sup.2, and R.sup.2 represents a straight- or branched-chain alkyl alkenyl or alkynyl group which may optionally be substituted by one or more carboxyl, carboxylic acid ester, or free or protected hydroxyl, thiol, aldehyde or keto groups;with the provisos that R.sup.x is not hydrogen when A is O and R.sup.y is R.sup.2 ; and that when A is H, OR.sup.z R.sup.y and R.sup.2 and R.sup.x and R.sup.z are not both hydrogen.Processes for the preparation of these compounds and of 2-substituted 4-hydroxy-cyclopent-2-en-1-one derivatives are also disclosed.

Abstract: A method for purifying alkoxysilane with the general formula, R.sub.m Si(OR.sup.1).sub.4-m. The method significantly lowers the level of non-hydrolyzable chlorine-based impurities, as well as the level of hydrolyzable chlorine-based impurities. The method comprises: (i) heating the alkoxysilane in the presence of a treating agent selected from a group which consists of acid clays and metal halides; (ii) contacting the alkoxysilane with a neutralization agent; and (iii) separating the alkoxysilane from the unused neutralization agent and by-products of neutralization.

Abstract: Compounds of the formula Ia ##STR1## in which X and R.sup.1 to R.sup.6 are as defined in the claims, are obtainable by reacting monochlorosilanes of the formula II ##STR2## with tetrasubstituted ethylenes of the formula III ##STR3## X as Cl and Br can be replaced by ester groups of inorganic and organic acids. The compounds of the formula I and those with other ester groups are suitable especially as a protective-group reagent for hydroxyl, mercapto, carboxyl, amino and amide groups.

Abstract: A novel 2-substituted-1,3-butadiene compound which may be used as a coupling agent is disclosed, i.e. a 2-substituted-1,3-butadiene compound of the general formula (I) ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 independently represent a halogen, a lower alkyl group, or a lower alkoxy group with the exception of those compounds wherein R.sup.1, R.sup.2 and R.sup.3 are all lower alkyl groups.

Abstract: Compounds of formula (C) ##STR1## where either R.sup.D represents a hydroxymethyl group and R.sup.E represents a hydroxyl group or R.sup.D represents a protected hydroxymethyl group and R.sup.E represents a protected hydroxyl group or R.sup.E represents a hydroxyl group and R.sup.D represents an ethenyl group and R.sup.F represents a hydroxyl or protected hydroxyl group or a leaving group with the proviso that either R.sup.D represents a protected hydroxymethyl group and R.sup.E represents a protected hydroxyl group or R.sup.F represents a protected hydroxyl group, which compounds are of use as intermediates in the preparation of compounds having antiviral activity.