Patent classifications
C07F7/14
FUNCTIONALIZED FLUOROALKYL SILANE, AND SYNTHETIC METHOD THEREFOR AND APPLICATION THEREOF
Disclosed in the present invention are a functionalized fluoroalkyl silane compound and a synthetic method therefor. The method comprises: dissolving a halosilane and a fluoroalkyl source in an organic solvent; and synthesizing functionalized fluoroalkyl silane under the effect of an alkali or a tertiary phosphine compound. The functionalized fluoroalkyl silane can not only be used for constructing a series of high added-value compounds such as fluoroalkyl substituted alcohols, ketones and amines that can be constructed by conventional TMSR.sub.f, but also can transfer, by means of appropriate conversion, a functional group on a silicon protecting group to the obtained addition product in an addition reaction, for synthesizing some fluorine-containing compounds that cannot be synthesized by using a conventional TMSR.sub.f reagent, thereby greatly improving the synthesis efficiency and the atom economy of reactions. Also disclosed in the present invention are more excellent reaction efficiency and enantioselectivity, compared with conventional TMSCF.sub.3, exhibited by trifluoromethyl chloromethylsilane in synthesis of a 2-trifluoromethylquinoline compound and in an asymmetric trifluoromethylation reaction with α,β-unsaturated ketones.
Superhydrophobic coating containing silica nanoparticles
A substrate with a superhydrophobic coating, wherein the superhydrophobic coating includes a binding layer disposed on the substrate, and a hydrophobic layer disposed on the binding layer, wherein the hydrophobic layer includes perfluoroalkyl-functionalized silica nanoparticles, and a method of fabricating the substrate with the superhydrophobic coating. Various combinations of embodiments of the substrate with the superhydrophobic coating and the method of fabricating thereof are provided.
Superhydrophobic coating containing silica nanoparticles
A substrate with a superhydrophobic coating, wherein the superhydrophobic coating includes a binding layer disposed on the substrate, and a hydrophobic layer disposed on the binding layer, wherein the hydrophobic layer includes perfluoroalkyl-functionalized silica nanoparticles, and a method of fabricating the substrate with the superhydrophobic coating. Various combinations of embodiments of the substrate with the superhydrophobic coating and the method of fabricating thereof are provided.
PROCESS FOR PRODUCING DIMETHYLCHLOROSILANE COMPOUND
A process for producing a dimethylchlorosilane compound of formula (2) below:
##STR00001## wherein X represents a halogen atom or an acyloxy group having 2 to 20 carbon atoms, the process including the step of: reacting an allyl compound of formula (1) below:
##STR00002## wherein X has a meaning same as above, with dimethylchlorosilane in presence of an iridium catalyst, wherein the dimethylchlorosilane has a content of 1,1,3,3-tetramethyldisiloxane of 5.0 wt % or less.
PROCESS FOR PRODUCING DIMETHYLCHLOROSILANE COMPOUND
A process for producing a dimethylchlorosilane compound of formula (2) below:
##STR00001## wherein X represents a halogen atom or an acyloxy group having 2 to 20 carbon atoms, the process including the step of: reacting an allyl compound of formula (1) below:
##STR00002## wherein X has a meaning same as above, with dimethylchlorosilane in presence of an iridium catalyst, wherein the dimethylchlorosilane has a content of 1,1,3,3-tetramethyldisiloxane of 5.0 wt % or less.
PROCESS FOR SYNTHESIS OF ORGANOSILICON COMPOUNDS FROM HALOSILANES
A process for synthesis of an organosilicon compound is provided herein. Also, novel organosilicon compounds prepared by the present process is provided herein. The process comprises the reaction of a halosilane with an organofunctional alkyl halide in the presence of a metal catalyst, a promoter, and an optional co-catalyst. The process provides an efficient synthetic route to produce organosilicon compounds. The process also allows synthesis of organosilicon compounds with a plurality of different functional groups.
PROCESS FOR SYNTHESIS OF ORGANOSILICON COMPOUNDS FROM HALOSILANES
A process for synthesis of an organosilicon compound is provided herein. Also, novel organosilicon compounds prepared by the present process is provided herein. The process comprises the reaction of a halosilane with an organofunctional alkyl halide in the presence of a metal catalyst, a promoter, and an optional co-catalyst. The process provides an efficient synthetic route to produce organosilicon compounds. The process also allows synthesis of organosilicon compounds with a plurality of different functional groups.
METHOD FOR PRODUCING (METH)ACRYLOXY GROUP-CONTAINING ORGANOSILICON COMPOUNDS
An acryloxy or methacryloxy group-containing organosilicon compound of the formula
##STR00001##
(wherein R.sup.1 is a substituted or unsubstituted monovalent hydrocarbon group of 1 to 10 carbon atoms, R.sup.2 is a hydrogen atom or a methyl group, R.sup.3 is an unsubstituted divalent hydrocarbon group of 1 to 18 carbon atoms, X is a halogen atom and n is an integer of 1, 2 or 3) is to prepared by subjecting a hydrohalosilane compound of the formula
HSiX.sub.nR.sup.1.sub.3-n (1)
and an alkenyl group-containing (meth)acrylate compound of the formula
##STR00002##
to a hydrosilylation reaction in the presence of an acid amide compound and a platinum catalyst. This method is able to suppress, in the industrial scale production of (meth)acryloyloxy group-containing organosilicon compounds, propagation reactions by which the starting (meth)acrylate compound self-polymerizes.
METHOD FOR PRODUCING (METH)ACRYLOXY GROUP-CONTAINING ORGANOSILICON COMPOUNDS
An acryloxy or methacryloxy group-containing organosilicon compound of the formula
##STR00001##
(wherein R.sup.1 is a substituted or unsubstituted monovalent hydrocarbon group of 1 to 10 carbon atoms, R.sup.2 is a hydrogen atom or a methyl group, R.sup.3 is an unsubstituted divalent hydrocarbon group of 1 to 18 carbon atoms, X is a halogen atom and n is an integer of 1, 2 or 3) is to prepared by subjecting a hydrohalosilane compound of the formula
HSiX.sub.nR.sup.1.sub.3-n (1)
and an alkenyl group-containing (meth)acrylate compound of the formula
##STR00002##
to a hydrosilylation reaction in the presence of an acid amide compound and a platinum catalyst. This method is able to suppress, in the industrial scale production of (meth)acryloyloxy group-containing organosilicon compounds, propagation reactions by which the starting (meth)acrylate compound self-polymerizes.
Method for preventing or reducing low speed pre-ignition in direct injected spark-ignited engines with silane-containing lubricant
Disclosed is a lubricating engine oil composition for use in down-sized boosted engines comprising a lubricating oil base stock as a major component, and at least one silane-containing compound. Also disclosed is a method for preventing or reducing low speed pre-ignition in a direct injected, boosted, spark ignited internal combustion engine, and the use of at least one silane-containing compound in a lubricating engine oil composition for preventing or reducing low speed pre-ignition in a direct injected, boosted, spark ignited internal combustion engine.