C07F7/1876

Dehydrogenative silylation, hydrosilylation and crosslinking using pyridinediimine cobalt carboxylate catalysts

A process for producing a silylated product comprises reacting a mixture comprising (a) an unsaturated compound containing at least one unsaturated functional group, (b) a silyl hydride containing at least one silylhydride functional group, and (c) a catalyst, optionally in the presence of a solvent, to produce a dehydrogenative silylated product, a hydrosilylated product, or a combination of a dehydrogenative silylated product and a hydrosilylated product, wherein the catalyst is chosen from a pyridine diimine cobalt dicarboxylate complex or a cobalt carboxylate compound, and the process is conducted without pre-activating the catalyst via a reducing agent and/or without an initiator or promoter compound. The present catalysts have been found to be active in the presence of the silyl hydride employed in the silylation reaction.

Fluorinated cycloalkene functionalized silicas

Fluorinated cyclopentene moieties and fluorinated cyclopentene functionalized silica materials are provided. The fluorinated cyclopentene functionalized silica materials include a silica material having the fluorinated cyclopentene moiety covalently bonded thereto. Exemplary silica materials include a polysilsesquioxane, a nanosilica, a microsilica, a silica gel, a silica aerogel, or combinations thereof. The fluorinated cyclopentene moieties are based on a modification of perfluorocyclopentene (i.e., 1,2,3,3,4,4,5,5-octafluoro-1-cyclopentene) by nucleophilic substitution with an appropriate nucleophile having a reactive functional group. Methods for preparing fluorinated cyclopentene moieties and the corresponding fluorinated cyclopentene functionalized silica materials are also provided.

Process for preparing tris[3-(alkyldialkoxysilyl)propyl]isocyanurates
10711018 · 2020-07-14 · ·

A process can prepare an isocyanurate compound by hydrosilylation. The compound is a tris[3-(trialkoxysilyl)propyl] isocyanurate, a tris[3-(alkyldialkoxysilyl)propyl] isocyanurate, and/or a tris[3-(dialkylalkoxysilyl)propyl] isocyanurate, The process includes (A) preparing a mixture of at least one carboxylic acid, a platinum catalyst, and 1,3,5-triallyl-1,3,5-triazine-2,4,6(1H,3H,5H)-trione; (B) heating the mixture to a temperature in the range of 40 to 140 C.; (C) adding at least one H-silane among a hydrotrialkoxysilane, a hydroalkyldialkoxysilane, and a hydrodialkylalkoxysilane to the mixture; (D) adding at least one alcohol to the mixture prepared in step (C); and (E) isolating the isocyanurate compound.

Process for preparing tris[3-(dialkylalkoxysilyl)propyl]isocyanurates
10703769 · 2020-07-07 · ·

A process can prepare an isocyanurate compound by hydrosilylation. The compound is a tris[3-(trialkoxysilyl)propyl] isocyanurate, a tris[3-(alkyldialkoxysilyl)propyl] isocyanurate, and/or a tris[3-(dialkylalkoxysilyl)propyl] isocyanurate, The process includes (A) preparing a mixture of at least one carboxylic acid, a platinum catalyst, and 1,3,5-triallyl-1,3,5-triazine-2,4,6(1H,3H,5H)-trione; (B) heating the mixture to a temperature in the range of 40 to 140 C.; (C) adding at least one H-silane among a hydrotrialkoxysilane, a hydroalkyldialkoxysilane, and a hydrodialkylalkoxysilane to the mixture; (D) adding at least one alcohol to the mixture prepared in step (C); and (E) isolating the isocyanurate compound.

Glycoluril ring-containing organosilicon compound and making method

Provided is a glycoluril ring-containing organosilicon compound having 4 organoxysilyl groups to form silanol groups capable of covalently bonding with hydroxyl groups on an inorganic material surface. The compound imparts mechanical strength and adhesion to an organic/inorganic composite material.

Immobilized ruthenium-triphos catalysts for selective hydrogenolysis of amides

A compound represented by the structure of formula (I): ##STR00001## The compound is useful as a ligand for ruthenium to form an organometallic complex. The complex may be immobilized on an oxidic support to form an active, heterogeneous catalyst for the hydrogenolysis of amides to form amines and optionally alcohols.

Isocyanuric acid derivative having alkoxyalkyl groups and method for producing the same

There is provided a novel isocyanuric acid derivative having two alkoxyalkyl groups and having a trialkoxysilyl group introduced therein, and a method for producing the isocyanuric acid derivative. An isocyanuric acid derivative of formula (1): ##STR00001##
wherein R.sup.1 is a methyl group or an ethyl group; two R.sup.2s are each a C.sub.1-2 alkylene group; and two R.sup.3s are each a methyl group, an ethyl group, or a C.sub.2-4 alkoxyalkyl group, which may be liquid at ambient temperature and ambient pressure.

ISOCYANURIC ACID DERIVATIVE HAVING ALKOXYALKYL GROUPS AND METHOD FOR PRODUCING THE SAME

A novel isocyanuric acid derivative having two alkoxyalkyl groups and having a trialkoxysilyl group introduced therein, and a method for producing the isocyanuric acid derivative. An isocyanuric acid derivative of formula (1):

##STR00001##

wherein R.sup.1 is a methyl group or an ethyl group; two R.sup.2s are each a C.sub.1-2 alkylene group; and two R.sup.3s are each a methyl group, an ethyl group, or a C.sub.2-4 alkoxyalkyl group, which may be liquid at ambient temperature and ambient pressure.

COMPOUND HAVING ALKOXYSILYL GROUP AND ACTIVE ESTER GROUP, METHOD FOR PREPARING SAME, COMPOSITION COMPRISING SAME, AND USE

The present invention relates to a novel compound having an alkoxysilyl group and an active ester group, a method for preparing the same, a composition comprising the same, and a use, wherein the novel compound exhibits improved low moisture absorption and/or low dielectric properties when cured as an epoxy composition, but is not accompanied by loss of thermal expansion characteristics. Disclosed are a novel compound of formulae AF to LF having an alkoxysilyl group and an active ester group, and a method for preparing the same, a composition comprising the same, and a use of same.

Method for Preparing Silicon-Containing Heterocycles
20200148708 · 2020-05-14 ·

The present invention relates to a method for preparing silicon-containing heterocycles of the general formula (I)

##STR00001## wherein R.sup.1 is hydrogen; R.sup.2 and R.sup.3 are same or different and are, independently from one another, selected from a linear or branched, substituted or unsubstituted C.sub.1-C.sub.20 alkyl or C.sub.6-C.sub.18 aryl residue which may be interrupted by at least one heteroatom; R.sup.4 is selected from a linear or branched C.sub.1-C.sub.20 alkylene residue which may be interrupted by at least one heteroatom; R.sup.5 and R.sup.6 are same or different and are, independently from one another, selected from the group consisting of hydrogen, a linear or branched, substituted or unsubstituted C.sub.1-C.sub.20 alkyl or C.sub.6-C.sub.18 aryl which may be interrupted by at least one heteroatom, and a C.sub.4-C.sub.8 cycloalkyl, or R.sup.5 and R.sup.6 may form a ring, a 4- to 8-membered alkyl ring; and n is 0, 1 or 2, 2, said method comprising a one-step reaction of at least one epoxide compound of the general formula (II) and at least one aminoalkoxysilane having a primary amino group in the presence of a catalyst

##STR00002## wherein R.sup.5 and R.sup.6 are the same as defined for the general formula (I) above; as well as the use of the silicon-containing heterocycles of the general formula (I).